./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8d31f386 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-2.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 c12b3d893de05137a4e7e0aa006fe67a43cc9e3d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 12:01:04,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 12:01:04,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 12:01:04,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 12:01:04,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 12:01:04,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 12:01:04,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 12:01:04,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 12:01:04,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 12:01:04,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 12:01:04,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 12:01:04,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 12:01:04,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 12:01:04,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 12:01:04,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 12:01:04,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 12:01:04,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 12:01:04,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 12:01:04,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 12:01:04,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 12:01:04,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 12:01:04,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 12:01:04,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 12:01:04,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 12:01:04,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 12:01:04,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 12:01:04,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 12:01:04,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 12:01:04,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 12:01:04,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 12:01:04,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 12:01:04,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 12:01:04,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 12:01:04,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 12:01:04,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 12:01:04,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 12:01:04,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 12:01:04,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 12:01:04,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 12:01:04,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 12:01:04,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 12:01:04,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-07-06 12:01:04,256 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 12:01:04,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 12:01:04,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 12:01:04,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 12:01:04,259 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 12:01:04,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 12:01:04,259 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 12:01:04,259 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 12:01:04,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 12:01:04,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 12:01:04,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 12:01:04,261 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-07-06 12:01:04,261 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-07-06 12:01:04,261 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-07-06 12:01:04,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 12:01:04,261 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-07-06 12:01:04,262 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 12:01:04,262 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 12:01:04,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 12:01:04,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 12:01:04,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 12:01:04,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 12:01:04,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 12:01:04,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 12:01:04,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 12:01:04,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 12:01:04,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 12:01:04,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12b3d893de05137a4e7e0aa006fe67a43cc9e3d [2021-07-06 12:01:04,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 12:01:04,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 12:01:04,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 12:01:04,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 12:01:04,594 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 12:01:04,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2021-07-06 12:01:04,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03fe54b66/eaa69177f0e34d818b8701d81be50ea1/FLAG1a7034e7e [2021-07-06 12:01:05,265 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 12:01:05,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2021-07-06 12:01:05,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03fe54b66/eaa69177f0e34d818b8701d81be50ea1/FLAG1a7034e7e [2021-07-06 12:01:05,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03fe54b66/eaa69177f0e34d818b8701d81be50ea1 [2021-07-06 12:01:05,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 12:01:05,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-06 12:01:05,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 12:01:05,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 12:01:05,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 12:01:05,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 12:01:05" (1/1) ... [2021-07-06 12:01:05,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10012d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:05, skipping insertion in model container [2021-07-06 12:01:05,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 12:01:05" (1/1) ... [2021-07-06 12:01:05,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 12:01:05,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 12:01:05,892 WARN L224 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-2.c[2073,2086] [2021-07-06 12:01:06,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 12:01:06,121 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 12:01:06,133 WARN L224 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-2.c[2073,2086] [2021-07-06 12:01:06,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 12:01:06,260 INFO L208 MainTranslator]: Completed translation [2021-07-06 12:01:06,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06 WrapperNode [2021-07-06 12:01:06,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 12:01:06,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 12:01:06,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 12:01:06,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 12:01:06,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (1/1) ... [2021-07-06 12:01:06,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (1/1) ... [2021-07-06 12:01:06,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (1/1) ... [2021-07-06 12:01:06,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (1/1) ... [2021-07-06 12:01:06,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (1/1) ... [2021-07-06 12:01:06,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (1/1) ... [2021-07-06 12:01:06,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (1/1) ... [2021-07-06 12:01:06,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 12:01:06,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 12:01:06,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 12:01:06,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 12:01:06,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (1/1) ... [2021-07-06 12:01:06,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 12:01:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 12:01:06,418 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) [2021-07-06 12:01:06,462 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 [2021-07-06 12:01:06,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-07-06 12:01:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 12:01:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-07-06 12:01:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-07-06 12:01:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-07-06 12:01:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-07-06 12:01:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-07-06 12:01:06,478 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2021-07-06 12:01:06,478 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2021-07-06 12:01:06,478 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2021-07-06 12:01:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-07-06 12:01:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-07-06 12:01:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2021-07-06 12:01:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-07-06 12:01:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2021-07-06 12:01:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2021-07-06 12:01:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2021-07-06 12:01:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-07-06 12:01:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2021-07-06 12:01:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-07-06 12:01:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2021-07-06 12:01:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2021-07-06 12:01:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-07-06 12:01:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-07-06 12:01:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-07-06 12:01:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-07-06 12:01:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-07-06 12:01:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-07-06 12:01:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-07-06 12:01:06,482 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-07-06 12:01:06,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2021-07-06 12:01:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-07-06 12:01:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-07-06 12:01:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-07-06 12:01:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 12:01:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-07-06 12:01:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-07-06 12:01:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-07-06 12:01:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-07-06 12:01:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-07-06 12:01:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2021-07-06 12:01:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2021-07-06 12:01:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2021-07-06 12:01:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-07-06 12:01:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-07-06 12:01:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2021-07-06 12:01:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-07-06 12:01:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2021-07-06 12:01:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2021-07-06 12:01:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-07-06 12:01:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2021-07-06 12:01:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-07-06 12:01:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2021-07-06 12:01:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-07-06 12:01:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-07-06 12:01:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-07-06 12:01:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-07-06 12:01:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2021-07-06 12:01:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-07-06 12:01:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-07-06 12:01:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-07-06 12:01:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2021-07-06 12:01:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2021-07-06 12:01:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-07-06 12:01:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-07-06 12:01:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-07-06 12:01:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-07-06 12:01:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 12:01:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 12:01:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 12:01:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 12:01:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 12:01:06,987 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,082 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-07-06 12:01:07,083 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-07-06 12:01:07,091 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,127 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-07-06 12:01:07,127 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-07-06 12:01:07,146 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,173 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-07-06 12:01:07,174 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-07-06 12:01:07,232 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,281 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2021-07-06 12:01:07,281 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2021-07-06 12:01:07,281 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2021-07-06 12:01:07,285 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,442 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2021-07-06 12:01:07,442 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2021-07-06 12:01:07,444 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,469 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-07-06 12:01:07,470 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-07-06 12:01:07,504 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,518 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-07-06 12:01:07,518 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-07-06 12:01:07,522 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2021-07-06 12:01:07,663 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2021-07-06 12:01:07,672 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-06 12:01:07,676 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-07-06 12:01:07,676 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-07-06 12:01:07,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 12:01:07,707 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-07-06 12:01:07,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 12:01:07 BoogieIcfgContainer [2021-07-06 12:01:07,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 12:01:07,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 12:01:07,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 12:01:07,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 12:01:07,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 12:01:05" (1/3) ... [2021-07-06 12:01:07,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739fc9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 12:01:07, skipping insertion in model container [2021-07-06 12:01:07,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 12:01:06" (2/3) ... [2021-07-06 12:01:07,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739fc9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 12:01:07, skipping insertion in model container [2021-07-06 12:01:07,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 12:01:07" (3/3) ... [2021-07-06 12:01:07,721 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.c [2021-07-06 12:01:07,727 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 12:01:07,727 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-06 12:01:07,772 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr0ENSURES_VIOLATIONMEMORY_LEAK ======== [2021-07-06 12:01:07,780 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 12:01:07,781 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 12:01:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 516 states, 382 states have (on average 1.4895287958115184) internal successors, (569), 403 states have internal predecessors, (569), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2021-07-06 12:01:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-06 12:01:07,827 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:07,827 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:01:07,828 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:07,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:07,834 INFO L82 PathProgramCache]: Analyzing trace with hash 202700341, now seen corresponding path program 1 times [2021-07-06 12:01:07,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:07,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433309970] [2021-07-06 12:01:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:07,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:08,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:08,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:08,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:08,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:08,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:08,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:08,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:08,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433309970] [2021-07-06 12:01:08,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433309970] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:08,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:08,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 12:01:08,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871649154] [2021-07-06 12:01:08,286 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 12:01:08,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:08,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 12:01:08,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-06 12:01:08,309 INFO L87 Difference]: Start difference. First operand has 516 states, 382 states have (on average 1.4895287958115184) internal successors, (569), 403 states have internal predecessors, (569), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 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) [2021-07-06 12:01:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:10,342 INFO L93 Difference]: Finished difference Result 669 states and 1027 transitions. [2021-07-06 12:01:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 12:01:10,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 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 15 [2021-07-06 12:01:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:10,348 INFO L225 Difference]: With dead ends: 669 [2021-07-06 12:01:10,348 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 12:01:10,349 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-06 12:01:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 12:01:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 12:01:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-07-06 12:01:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 12:01:10,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-07-06 12:01:10,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:10,368 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 12:01:10,369 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 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) [2021-07-06 12:01:10,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 12:01:10,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 12:01:10,371 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 12:01:10,372 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 12:01:10,375 INFO L303 ceAbstractionStarter]: Result for error location mainErr0ENSURES_VIOLATIONMEMORY_LEAK was SAFE (1/2) [2021-07-06 12:01:10,377 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK ======== [2021-07-06 12:01:10,378 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 12:01:10,378 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 12:01:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 516 states, 382 states have (on average 1.4895287958115184) internal successors, (569), 403 states have internal predecessors, (569), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2021-07-06 12:01:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-06 12:01:10,384 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:10,384 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:01:10,384 INFO L374 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:10,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:10,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1835723386, now seen corresponding path program 1 times [2021-07-06 12:01:10,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:10,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315755255] [2021-07-06 12:01:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:10,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:10,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:10,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:10,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:10,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:10,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:10,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:10,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:10,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:10,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:10,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:10,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:10,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315755255] [2021-07-06 12:01:10,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315755255] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:10,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:10,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 12:01:10,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891335767] [2021-07-06 12:01:10,583 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 12:01:10,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:10,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 12:01:10,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 12:01:10,585 INFO L87 Difference]: Start difference. First operand has 516 states, 382 states have (on average 1.4895287958115184) internal successors, (569), 403 states have internal predecessors, (569), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-07-06 12:01:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:13,147 INFO L93 Difference]: Finished difference Result 679 states and 1040 transitions. [2021-07-06 12:01:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 12:01:13,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 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 20 [2021-07-06 12:01:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:13,164 INFO L225 Difference]: With dead ends: 679 [2021-07-06 12:01:13,164 INFO L226 Difference]: Without dead ends: 663 [2021-07-06 12:01:13,164 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 213.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-06 12:01:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-07-06 12:01:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 507. [2021-07-06 12:01:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 377 states have (on average 1.4562334217506632) internal successors, (549), 395 states have internal predecessors, (549), 102 states have call successors, (102), 29 states have call predecessors, (102), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-07-06 12:01:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 737 transitions. [2021-07-06 12:01:13,219 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 737 transitions. Word has length 20 [2021-07-06 12:01:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:13,220 INFO L442 AbstractCegarLoop]: Abstraction has 507 states and 737 transitions. [2021-07-06 12:01:13,220 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-07-06 12:01:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 737 transitions. [2021-07-06 12:01:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-06 12:01:13,221 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:13,221 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:01:13,221 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 12:01:13,222 INFO L374 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:13,222 INFO L82 PathProgramCache]: Analyzing trace with hash -992565858, now seen corresponding path program 1 times [2021-07-06 12:01:13,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:13,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49586467] [2021-07-06 12:01:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:13,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:13,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:13,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:13,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:13,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:13,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:13,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:13,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:13,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:13,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:13,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:13,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:13,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:13,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:13,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:13,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:13,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:13,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49586467] [2021-07-06 12:01:13,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49586467] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:13,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:13,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 12:01:13,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006847509] [2021-07-06 12:01:13,459 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 12:01:13,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:13,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 12:01:13,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-06 12:01:13,460 INFO L87 Difference]: Start difference. First operand 507 states and 737 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:16,417 INFO L93 Difference]: Finished difference Result 843 states and 1255 transitions. [2021-07-06 12:01:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 12:01:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 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 25 [2021-07-06 12:01:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:16,423 INFO L225 Difference]: With dead ends: 843 [2021-07-06 12:01:16,424 INFO L226 Difference]: Without dead ends: 842 [2021-07-06 12:01:16,425 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 223.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-06 12:01:16,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-07-06 12:01:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 662. [2021-07-06 12:01:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 501 states have (on average 1.407185628742515) internal successors, (705), 508 states have internal predecessors, (705), 111 states have call successors, (111), 40 states have call predecessors, (111), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2021-07-06 12:01:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 961 transitions. [2021-07-06 12:01:16,463 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 961 transitions. Word has length 25 [2021-07-06 12:01:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:16,463 INFO L442 AbstractCegarLoop]: Abstraction has 662 states and 961 transitions. [2021-07-06 12:01:16,464 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 961 transitions. [2021-07-06 12:01:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-07-06 12:01:16,465 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:16,466 INFO L525 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] [2021-07-06 12:01:16,466 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-06 12:01:16,466 INFO L374 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash 555196280, now seen corresponding path program 1 times [2021-07-06 12:01:16,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:16,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455510137] [2021-07-06 12:01:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:16,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:16,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:16,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:16,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:16,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:16,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:16,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:16,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:16,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:16,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:16,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:16,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:16,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455510137] [2021-07-06 12:01:16,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455510137] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:16,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:16,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 12:01:16,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321109684] [2021-07-06 12:01:16,674 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 12:01:16,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:16,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 12:01:16,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-06 12:01:16,675 INFO L87 Difference]: Start difference. First operand 662 states and 961 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:19,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:19,024 INFO L93 Difference]: Finished difference Result 966 states and 1409 transitions. [2021-07-06 12:01:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 12:01:19,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-07-06 12:01:19,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:19,031 INFO L225 Difference]: With dead ends: 966 [2021-07-06 12:01:19,031 INFO L226 Difference]: Without dead ends: 966 [2021-07-06 12:01:19,031 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 214.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-06 12:01:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-07-06 12:01:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 787. [2021-07-06 12:01:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 610 states have (on average 1.4032786885245903) internal successors, (856), 613 states have internal predecessors, (856), 113 states have call successors, (113), 46 states have call predecessors, (113), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2021-07-06 12:01:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1132 transitions. [2021-07-06 12:01:19,065 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1132 transitions. Word has length 30 [2021-07-06 12:01:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:19,065 INFO L442 AbstractCegarLoop]: Abstraction has 787 states and 1132 transitions. [2021-07-06 12:01:19,066 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1132 transitions. [2021-07-06 12:01:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-06 12:01:19,068 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:19,068 INFO L525 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] [2021-07-06 12:01:19,068 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-06 12:01:19,068 INFO L374 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:19,069 INFO L82 PathProgramCache]: Analyzing trace with hash -244848687, now seen corresponding path program 1 times [2021-07-06 12:01:19,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:19,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039434150] [2021-07-06 12:01:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:19,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:19,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:19,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:19,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:19,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:01:19,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:19,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:19,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:19,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:19,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:19,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:19,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:19,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:19,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:19,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039434150] [2021-07-06 12:01:19,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039434150] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:19,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:19,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 12:01:19,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037521421] [2021-07-06 12:01:19,295 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 12:01:19,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:19,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 12:01:19,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-06 12:01:19,298 INFO L87 Difference]: Start difference. First operand 787 states and 1132 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:22,440 INFO L93 Difference]: Finished difference Result 1340 states and 2025 transitions. [2021-07-06 12:01:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 12:01:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-07-06 12:01:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:22,446 INFO L225 Difference]: With dead ends: 1340 [2021-07-06 12:01:22,447 INFO L226 Difference]: Without dead ends: 1340 [2021-07-06 12:01:22,447 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 238.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-06 12:01:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-07-06 12:01:22,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 905. [2021-07-06 12:01:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 707 states have (on average 1.413012729844413) internal successors, (999), 709 states have internal predecessors, (999), 126 states have call successors, (126), 54 states have call predecessors, (126), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2021-07-06 12:01:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1345 transitions. [2021-07-06 12:01:22,483 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1345 transitions. Word has length 31 [2021-07-06 12:01:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:22,484 INFO L442 AbstractCegarLoop]: Abstraction has 905 states and 1345 transitions. [2021-07-06 12:01:22,484 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1345 transitions. [2021-07-06 12:01:22,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-06 12:01:22,486 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:22,486 INFO L525 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] [2021-07-06 12:01:22,487 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-06 12:01:22,487 INFO L374 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:22,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:22,487 INFO L82 PathProgramCache]: Analyzing trace with hash 761233557, now seen corresponding path program 1 times [2021-07-06 12:01:22,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:22,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45907323] [2021-07-06 12:01:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:22,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:22,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:22,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:22,538 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:01:22,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:01:22,544 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:01:22,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:01:22,550 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:01:22,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:01:22,554 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:01:22,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:01:22,556 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-06 12:01:22,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:22,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:22,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:22,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:22,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:22,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:22,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:01:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:22,729 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-07-06 12:01:22,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 12:01:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:22,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:22,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45907323] [2021-07-06 12:01:22,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45907323] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:22,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:22,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-06 12:01:22,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128736355] [2021-07-06 12:01:22,748 INFO L425 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-06 12:01:22,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:22,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-06 12:01:22,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-07-06 12:01:22,749 INFO L87 Difference]: Start difference. First operand 905 states and 1345 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-07-06 12:01:23,039 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-07-06 12:01:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:26,004 INFO L93 Difference]: Finished difference Result 1042 states and 1577 transitions. [2021-07-06 12:01:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:01:26,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-07-06 12:01:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:26,011 INFO L225 Difference]: With dead ends: 1042 [2021-07-06 12:01:26,011 INFO L226 Difference]: Without dead ends: 1042 [2021-07-06 12:01:26,012 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 519.3ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-07-06 12:01:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-07-06 12:01:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 833. [2021-07-06 12:01:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 648 states have (on average 1.3981481481481481) internal successors, (906), 651 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2021-07-06 12:01:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1200 transitions. [2021-07-06 12:01:26,043 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1200 transitions. Word has length 32 [2021-07-06 12:01:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:26,043 INFO L442 AbstractCegarLoop]: Abstraction has 833 states and 1200 transitions. [2021-07-06 12:01:26,044 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-07-06 12:01:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1200 transitions. [2021-07-06 12:01:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-06 12:01:26,047 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:26,047 INFO L525 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] [2021-07-06 12:01:26,047 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-06 12:01:26,047 INFO L374 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:26,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:26,048 INFO L82 PathProgramCache]: Analyzing trace with hash -2010546137, now seen corresponding path program 1 times [2021-07-06 12:01:26,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:26,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480037927] [2021-07-06 12:01:26,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:26,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:26,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:26,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:26,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:26,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:26,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:26,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:26,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:26,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:26,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:26,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:26,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:26,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:26,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480037927] [2021-07-06 12:01:26,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480037927] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:26,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:26,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-06 12:01:26,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790072346] [2021-07-06 12:01:26,292 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 12:01:26,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:26,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 12:01:26,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-06 12:01:26,293 INFO L87 Difference]: Start difference. First operand 833 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-07-06 12:01:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:29,167 INFO L93 Difference]: Finished difference Result 959 states and 1417 transitions. [2021-07-06 12:01:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:01:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-07-06 12:01:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:29,172 INFO L225 Difference]: With dead ends: 959 [2021-07-06 12:01:29,172 INFO L226 Difference]: Without dead ends: 959 [2021-07-06 12:01:29,172 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 377.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:01:29,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-07-06 12:01:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 832. [2021-07-06 12:01:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 648 states have (on average 1.3950617283950617) internal successors, (904), 650 states have internal predecessors, (904), 116 states have call successors, (116), 50 states have call predecessors, (116), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2021-07-06 12:01:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1197 transitions. [2021-07-06 12:01:29,198 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1197 transitions. Word has length 36 [2021-07-06 12:01:29,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:29,198 INFO L442 AbstractCegarLoop]: Abstraction has 832 states and 1197 transitions. [2021-07-06 12:01:29,198 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-07-06 12:01:29,198 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1197 transitions. [2021-07-06 12:01:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-06 12:01:29,201 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:29,202 INFO L525 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] [2021-07-06 12:01:29,202 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-06 12:01:29,202 INFO L374 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:29,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1026748832, now seen corresponding path program 1 times [2021-07-06 12:01:29,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:29,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445465135] [2021-07-06 12:01:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:29,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:29,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:29,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:29,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:29,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:29,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:29,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:01:29,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:29,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:29,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:29,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:29,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:29,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:29,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:29,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:29,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:29,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:29,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445465135] [2021-07-06 12:01:29,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445465135] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:29,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:29,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-06 12:01:29,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865705565] [2021-07-06 12:01:29,414 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 12:01:29,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:29,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 12:01:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-06 12:01:29,415 INFO L87 Difference]: Start difference. First operand 832 states and 1197 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:32,136 INFO L93 Difference]: Finished difference Result 993 states and 1427 transitions. [2021-07-06 12:01:32,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:01:32,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-07-06 12:01:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:32,140 INFO L225 Difference]: With dead ends: 993 [2021-07-06 12:01:32,140 INFO L226 Difference]: Without dead ends: 993 [2021-07-06 12:01:32,141 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 348.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:01:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-07-06 12:01:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 734. [2021-07-06 12:01:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.3859649122807018) internal successors, (790), 573 states have internal predecessors, (790), 105 states have call successors, (105), 45 states have call predecessors, (105), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2021-07-06 12:01:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1026 transitions. [2021-07-06 12:01:32,159 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1026 transitions. Word has length 39 [2021-07-06 12:01:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:32,159 INFO L442 AbstractCegarLoop]: Abstraction has 734 states and 1026 transitions. [2021-07-06 12:01:32,159 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1026 transitions. [2021-07-06 12:01:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-07-06 12:01:32,161 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:32,161 INFO L525 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] [2021-07-06 12:01:32,161 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-06 12:01:32,162 INFO L374 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:32,162 INFO L82 PathProgramCache]: Analyzing trace with hash -476224825, now seen corresponding path program 1 times [2021-07-06 12:01:32,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:32,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950660401] [2021-07-06 12:01:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:32,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:32,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:32,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:32,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:32,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:32,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:32,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:32,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:32,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:32,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:32,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:32,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:32,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-07-06 12:01:32,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:01:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:32,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:32,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950660401] [2021-07-06 12:01:32,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950660401] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:32,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:32,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 12:01:32,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596804002] [2021-07-06 12:01:32,371 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 12:01:32,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 12:01:32,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-06 12:01:32,372 INFO L87 Difference]: Start difference. First operand 734 states and 1026 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:34,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:34,399 INFO L93 Difference]: Finished difference Result 957 states and 1377 transitions. [2021-07-06 12:01:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 12:01:34,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-07-06 12:01:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:34,403 INFO L225 Difference]: With dead ends: 957 [2021-07-06 12:01:34,403 INFO L226 Difference]: Without dead ends: 957 [2021-07-06 12:01:34,404 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 259.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-06 12:01:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-07-06 12:01:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 754. [2021-07-06 12:01:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3962585034013606) internal successors, (821), 600 states have internal predecessors, (821), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2021-07-06 12:01:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1052 transitions. [2021-07-06 12:01:34,423 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1052 transitions. Word has length 40 [2021-07-06 12:01:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:34,423 INFO L442 AbstractCegarLoop]: Abstraction has 754 states and 1052 transitions. [2021-07-06 12:01:34,423 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-07-06 12:01:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1052 transitions. [2021-07-06 12:01:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-06 12:01:34,425 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:34,426 INFO L525 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] [2021-07-06 12:01:34,426 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-06 12:01:34,426 INFO L374 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1997241835, now seen corresponding path program 1 times [2021-07-06 12:01:34,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:34,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201953234] [2021-07-06 12:01:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:34,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:34,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:34,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:34,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:34,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:34,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:34,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:34,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:34,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:34,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:34,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:34,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:34,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:34,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:34,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-07-06 12:01:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:34,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:34,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:34,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:34,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201953234] [2021-07-06 12:01:34,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201953234] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:34,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:34,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-06 12:01:34,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933728906] [2021-07-06 12:01:34,610 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 12:01:34,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:34,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 12:01:34,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-06 12:01:34,611 INFO L87 Difference]: Start difference. First operand 754 states and 1052 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-07-06 12:01:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:37,003 INFO L93 Difference]: Finished difference Result 934 states and 1345 transitions. [2021-07-06 12:01:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 12:01:37,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-07-06 12:01:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:37,007 INFO L225 Difference]: With dead ends: 934 [2021-07-06 12:01:37,008 INFO L226 Difference]: Without dead ends: 934 [2021-07-06 12:01:37,008 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 203.5ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-07-06 12:01:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-07-06 12:01:37,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 754. [2021-07-06 12:01:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3945578231292517) internal successors, (820), 600 states have internal predecessors, (820), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2021-07-06 12:01:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1051 transitions. [2021-07-06 12:01:37,025 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1051 transitions. Word has length 46 [2021-07-06 12:01:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:37,026 INFO L442 AbstractCegarLoop]: Abstraction has 754 states and 1051 transitions. [2021-07-06 12:01:37,026 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-07-06 12:01:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1051 transitions. [2021-07-06 12:01:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-06 12:01:37,028 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:37,028 INFO L525 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] [2021-07-06 12:01:37,028 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-06 12:01:37,029 INFO L374 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:37,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1938375730, now seen corresponding path program 1 times [2021-07-06 12:01:37,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:37,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220354864] [2021-07-06 12:01:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:37,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:37,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:37,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:37,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:37,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:37,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:37,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:37,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:37,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:37,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:37,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:37,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:37,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:37,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:37,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-07-06 12:01:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:37,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:37,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:37,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:37,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220354864] [2021-07-06 12:01:37,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220354864] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:37,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:37,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-06 12:01:37,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706030619] [2021-07-06 12:01:37,199 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 12:01:37,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:37,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 12:01:37,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-06 12:01:37,200 INFO L87 Difference]: Start difference. First operand 754 states and 1051 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-07-06 12:01:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:39,196 INFO L93 Difference]: Finished difference Result 889 states and 1287 transitions. [2021-07-06 12:01:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 12:01:39,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-07-06 12:01:39,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:39,199 INFO L225 Difference]: With dead ends: 889 [2021-07-06 12:01:39,199 INFO L226 Difference]: Without dead ends: 889 [2021-07-06 12:01:39,199 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 227.9ms TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-07-06 12:01:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-07-06 12:01:39,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 743. [2021-07-06 12:01:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 581 states have (on average 1.395869191049914) internal successors, (811), 593 states have internal predecessors, (811), 105 states have call successors, (105), 46 states have call predecessors, (105), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2021-07-06 12:01:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1038 transitions. [2021-07-06 12:01:39,216 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1038 transitions. Word has length 47 [2021-07-06 12:01:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:39,216 INFO L442 AbstractCegarLoop]: Abstraction has 743 states and 1038 transitions. [2021-07-06 12:01:39,217 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-07-06 12:01:39,217 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1038 transitions. [2021-07-06 12:01:39,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-06 12:01:39,219 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:39,219 INFO L525 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] [2021-07-06 12:01:39,219 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-06 12:01:39,219 INFO L374 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:39,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:39,220 INFO L82 PathProgramCache]: Analyzing trace with hash 301464195, now seen corresponding path program 1 times [2021-07-06 12:01:39,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:39,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829348898] [2021-07-06 12:01:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:39,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:39,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:39,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:39,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:39,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:39,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:01:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:39,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:01:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:39,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:39,424 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-07-06 12:01:39,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:39,436 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-07-06 12:01:39,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:01:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:39,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:39,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:39,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:39,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:39,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829348898] [2021-07-06 12:01:39,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829348898] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:39,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:39,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-06 12:01:39,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320649306] [2021-07-06 12:01:39,478 INFO L425 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-06 12:01:39,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-06 12:01:39,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:01:39,479 INFO L87 Difference]: Start difference. First operand 743 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-07-06 12:01:39,983 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-07-06 12:01:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:42,467 INFO L93 Difference]: Finished difference Result 998 states and 1427 transitions. [2021-07-06 12:01:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-06 12:01:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2021-07-06 12:01:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:42,470 INFO L225 Difference]: With dead ends: 998 [2021-07-06 12:01:42,471 INFO L226 Difference]: Without dead ends: 998 [2021-07-06 12:01:42,471 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 659.9ms TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2021-07-06 12:01:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-07-06 12:01:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 786. [2021-07-06 12:01:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 616 states have (on average 1.3944805194805194) internal successors, (859), 627 states have internal predecessors, (859), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2021-07-06 12:01:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1099 transitions. [2021-07-06 12:01:42,488 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1099 transitions. Word has length 48 [2021-07-06 12:01:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:42,489 INFO L442 AbstractCegarLoop]: Abstraction has 786 states and 1099 transitions. [2021-07-06 12:01:42,489 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-07-06 12:01:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1099 transitions. [2021-07-06 12:01:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-06 12:01:42,491 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:42,491 INFO L525 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] [2021-07-06 12:01:42,491 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-06 12:01:42,492 INFO L374 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:42,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:42,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1439926846, now seen corresponding path program 1 times [2021-07-06 12:01:42,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:42,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446065451] [2021-07-06 12:01:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:42,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:42,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:42,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:42,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:42,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:42,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:42,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:42,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:42,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:01:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:42,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:42,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:01:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:42,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:42,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:42,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:42,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:42,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446065451] [2021-07-06 12:01:42,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446065451] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:42,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:42,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-06 12:01:42,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547354292] [2021-07-06 12:01:42,672 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 12:01:42,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:42,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 12:01:42,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-06 12:01:42,673 INFO L87 Difference]: Start difference. First operand 786 states and 1099 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:01:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:44,172 INFO L93 Difference]: Finished difference Result 1083 states and 1549 transitions. [2021-07-06 12:01:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 12:01:44,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-07-06 12:01:44,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:44,177 INFO L225 Difference]: With dead ends: 1083 [2021-07-06 12:01:44,177 INFO L226 Difference]: Without dead ends: 1083 [2021-07-06 12:01:44,177 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 189.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-06 12:01:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-07-06 12:01:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 860. [2021-07-06 12:01:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 672 states have (on average 1.3675595238095237) internal successors, (919), 678 states have internal predecessors, (919), 111 states have call successors, (111), 51 states have call predecessors, (111), 76 states have return successors, (154), 137 states have call predecessors, (154), 104 states have call successors, (154) [2021-07-06 12:01:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1184 transitions. [2021-07-06 12:01:44,195 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1184 transitions. Word has length 50 [2021-07-06 12:01:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:44,196 INFO L442 AbstractCegarLoop]: Abstraction has 860 states and 1184 transitions. [2021-07-06 12:01:44,196 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:01:44,196 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1184 transitions. [2021-07-06 12:01:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-06 12:01:44,198 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:44,198 INFO L525 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] [2021-07-06 12:01:44,198 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-06 12:01:44,199 INFO L374 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:44,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:44,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1007588546, now seen corresponding path program 1 times [2021-07-06 12:01:44,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:44,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560185626] [2021-07-06 12:01:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:44,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:44,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:44,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:44,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:44,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:01:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:44,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:01:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:44,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:44,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:44,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:44,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:44,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:44,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560185626] [2021-07-06 12:01:44,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560185626] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:44,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:44,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-06 12:01:44,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615407710] [2021-07-06 12:01:44,385 INFO L425 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-06 12:01:44,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:44,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-06 12:01:44,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-06 12:01:44,385 INFO L87 Difference]: Start difference. First operand 860 states and 1184 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:01:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:46,744 INFO L93 Difference]: Finished difference Result 990 states and 1410 transitions. [2021-07-06 12:01:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-06 12:01:46,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-07-06 12:01:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:46,748 INFO L225 Difference]: With dead ends: 990 [2021-07-06 12:01:46,748 INFO L226 Difference]: Without dead ends: 990 [2021-07-06 12:01:46,748 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 301.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:01:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-07-06 12:01:46,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 863. [2021-07-06 12:01:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 675 states have (on average 1.3674074074074074) internal successors, (923), 681 states have internal predecessors, (923), 111 states have call successors, (111), 51 states have call predecessors, (111), 76 states have return successors, (154), 137 states have call predecessors, (154), 104 states have call successors, (154) [2021-07-06 12:01:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1188 transitions. [2021-07-06 12:01:46,766 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1188 transitions. Word has length 50 [2021-07-06 12:01:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:46,767 INFO L442 AbstractCegarLoop]: Abstraction has 863 states and 1188 transitions. [2021-07-06 12:01:46,767 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:01:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1188 transitions. [2021-07-06 12:01:46,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-06 12:01:46,769 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:46,769 INFO L525 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] [2021-07-06 12:01:46,769 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-06 12:01:46,769 INFO L374 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1293234044, now seen corresponding path program 1 times [2021-07-06 12:01:46,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:46,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800203285] [2021-07-06 12:01:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:46,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:46,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:46,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:01:46,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:46,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:46,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:01:46,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:46,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:01:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:46,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:46,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:46,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:01:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:46,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:46,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:46,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:47,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:47,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800203285] [2021-07-06 12:01:47,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800203285] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:47,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:47,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-06 12:01:47,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577806831] [2021-07-06 12:01:47,005 INFO L425 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-06 12:01:47,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:47,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-06 12:01:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:01:47,005 INFO L87 Difference]: Start difference. First operand 863 states and 1188 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-07-06 12:01:47,172 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2021-07-06 12:01:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:49,931 INFO L93 Difference]: Finished difference Result 959 states and 1365 transitions. [2021-07-06 12:01:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-06 12:01:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2021-07-06 12:01:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:49,934 INFO L225 Difference]: With dead ends: 959 [2021-07-06 12:01:49,934 INFO L226 Difference]: Without dead ends: 959 [2021-07-06 12:01:49,934 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 522.7ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:01:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-07-06 12:01:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 837. [2021-07-06 12:01:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 653 states have (on average 1.3721286370597243) internal successors, (896), 666 states have internal predecessors, (896), 111 states have call successors, (111), 51 states have call predecessors, (111), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2021-07-06 12:01:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1150 transitions. [2021-07-06 12:01:49,951 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1150 transitions. Word has length 50 [2021-07-06 12:01:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:49,952 INFO L442 AbstractCegarLoop]: Abstraction has 837 states and 1150 transitions. [2021-07-06 12:01:49,952 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-07-06 12:01:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1150 transitions. [2021-07-06 12:01:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-06 12:01:49,954 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:49,954 INFO L525 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] [2021-07-06 12:01:49,954 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-06 12:01:49,954 INFO L374 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:49,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:49,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1030885843, now seen corresponding path program 1 times [2021-07-06 12:01:49,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:49,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694890057] [2021-07-06 12:01:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:49,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:49,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:49,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:49,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:49,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:49,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:49,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:50,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:50,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:50,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:01:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:50,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:50,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:01:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:50,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:50,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:50,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:50,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:50,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:50,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:50,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:50,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694890057] [2021-07-06 12:01:50,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694890057] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:50,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:50,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-06 12:01:50,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789870158] [2021-07-06 12:01:50,187 INFO L425 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-06 12:01:50,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:50,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-06 12:01:50,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-06 12:01:50,188 INFO L87 Difference]: Start difference. First operand 837 states and 1150 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:01:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:52,568 INFO L93 Difference]: Finished difference Result 977 states and 1385 transitions. [2021-07-06 12:01:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 12:01:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2021-07-06 12:01:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:52,572 INFO L225 Difference]: With dead ends: 977 [2021-07-06 12:01:52,572 INFO L226 Difference]: Without dead ends: 977 [2021-07-06 12:01:52,572 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 221.0ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-07-06 12:01:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-07-06 12:01:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2021-07-06 12:01:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 668 states have (on average 1.3682634730538923) internal successors, (914), 682 states have internal predecessors, (914), 112 states have call successors, (112), 52 states have call predecessors, (112), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2021-07-06 12:01:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1171 transitions. [2021-07-06 12:01:52,589 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1171 transitions. Word has length 52 [2021-07-06 12:01:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:52,589 INFO L442 AbstractCegarLoop]: Abstraction has 855 states and 1171 transitions. [2021-07-06 12:01:52,589 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:01:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1171 transitions. [2021-07-06 12:01:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-06 12:01:52,591 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:52,591 INFO L525 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] [2021-07-06 12:01:52,591 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-06 12:01:52,591 INFO L374 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1255599122, now seen corresponding path program 1 times [2021-07-06 12:01:52,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:52,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796492496] [2021-07-06 12:01:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:52,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:52,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:52,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:52,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:52,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:52,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:52,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:52,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:52,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:52,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:52,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:52,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:52,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:52,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-06 12:01:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:52,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:52,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:52,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-07-06 12:01:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:52,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:52,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:52,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:52,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796492496] [2021-07-06 12:01:52,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796492496] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:52,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:52,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-06 12:01:52,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926644829] [2021-07-06 12:01:52,766 INFO L425 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-06 12:01:52,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:52,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-06 12:01:52,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-06 12:01:52,766 INFO L87 Difference]: Start difference. First operand 855 states and 1171 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:01:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:55,185 INFO L93 Difference]: Finished difference Result 947 states and 1347 transitions. [2021-07-06 12:01:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:01:55,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2021-07-06 12:01:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:55,188 INFO L225 Difference]: With dead ends: 947 [2021-07-06 12:01:55,188 INFO L226 Difference]: Without dead ends: 947 [2021-07-06 12:01:55,189 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 208.4ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:01:55,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-07-06 12:01:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 827. [2021-07-06 12:01:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 647 states have (on average 1.3663060278207109) internal successors, (884), 659 states have internal predecessors, (884), 110 states have call successors, (110), 51 states have call predecessors, (110), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2021-07-06 12:01:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1134 transitions. [2021-07-06 12:01:55,204 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1134 transitions. Word has length 54 [2021-07-06 12:01:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:55,204 INFO L442 AbstractCegarLoop]: Abstraction has 827 states and 1134 transitions. [2021-07-06 12:01:55,204 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:01:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1134 transitions. [2021-07-06 12:01:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-06 12:01:55,206 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:55,206 INFO L525 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] [2021-07-06 12:01:55,207 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-06 12:01:55,207 INFO L374 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:55,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:55,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2131929044, now seen corresponding path program 1 times [2021-07-06 12:01:55,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:55,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270819502] [2021-07-06 12:01:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:55,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:55,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:55,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:55,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:55,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:55,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:55,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:55,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:01:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:55,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:55,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:55,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:01:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:55,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:55,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:55,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:55,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:55,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:55,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270819502] [2021-07-06 12:01:55,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270819502] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:55,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:55,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:01:55,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608755994] [2021-07-06 12:01:55,426 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:01:55,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:55,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:01:55,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:01:55,427 INFO L87 Difference]: Start difference. First operand 827 states and 1134 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:01:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:01:58,296 INFO L93 Difference]: Finished difference Result 959 states and 1361 transitions. [2021-07-06 12:01:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-06 12:01:58,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2021-07-06 12:01:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:01:58,299 INFO L225 Difference]: With dead ends: 959 [2021-07-06 12:01:58,299 INFO L226 Difference]: Without dead ends: 958 [2021-07-06 12:01:58,299 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:01:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-07-06 12:01:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 834. [2021-07-06 12:01:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 653 states have (on average 1.3644716692189893) internal successors, (891), 666 states have internal predecessors, (891), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2021-07-06 12:01:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1143 transitions. [2021-07-06 12:01:58,314 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1143 transitions. Word has length 51 [2021-07-06 12:01:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:01:58,314 INFO L442 AbstractCegarLoop]: Abstraction has 834 states and 1143 transitions. [2021-07-06 12:01:58,314 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:01:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1143 transitions. [2021-07-06 12:01:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-06 12:01:58,316 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:01:58,317 INFO L525 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] [2021-07-06 12:01:58,317 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-06 12:01:58,317 INFO L374 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:01:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:01:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2131652214, now seen corresponding path program 1 times [2021-07-06 12:01:58,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:01:58,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670888137] [2021-07-06 12:01:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:01:58,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:01:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:58,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:58,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:58,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:01:58,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:01:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:58,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:01:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:58,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:01:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:58,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:01:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:58,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:58,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:58,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:01:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:01:58,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:01:58,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:58,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:01:58,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:01:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:01:58,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:01:58,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670888137] [2021-07-06 12:01:58,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670888137] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:01:58,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:01:58,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:01:58,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260186845] [2021-07-06 12:01:58,552 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:01:58,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:01:58,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:01:58,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:01:58,553 INFO L87 Difference]: Start difference. First operand 834 states and 1143 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:02:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:01,244 INFO L93 Difference]: Finished difference Result 974 states and 1377 transitions. [2021-07-06 12:02:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-06 12:02:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2021-07-06 12:02:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:01,248 INFO L225 Difference]: With dead ends: 974 [2021-07-06 12:02:01,248 INFO L226 Difference]: Without dead ends: 953 [2021-07-06 12:02:01,248 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 257.9ms TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-07-06 12:02:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-07-06 12:02:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 833. [2021-07-06 12:02:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.3634969325153374) internal successors, (889), 665 states have internal predecessors, (889), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2021-07-06 12:02:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1141 transitions. [2021-07-06 12:02:01,269 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1141 transitions. Word has length 51 [2021-07-06 12:02:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:01,269 INFO L442 AbstractCegarLoop]: Abstraction has 833 states and 1141 transitions. [2021-07-06 12:02:01,269 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-07-06 12:02:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1141 transitions. [2021-07-06 12:02:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-06 12:02:01,274 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:01,274 INFO L525 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] [2021-07-06 12:02:01,274 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-06 12:02:01,274 INFO L374 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:01,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1449097113, now seen corresponding path program 1 times [2021-07-06 12:02:01,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:01,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113690388] [2021-07-06 12:02:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:01,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:01,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:01,341 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:02:01,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:02:01,348 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:02:01,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:02:01,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:01,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:01,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:01,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:02:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:01,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:01,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:01,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:01,565 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-07-06 12:02:01,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 12:02:01,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:01,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:01,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:01,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:01,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:01,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:01,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:01,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113690388] [2021-07-06 12:02:01,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113690388] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:01,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:01,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 12:02:01,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295991274] [2021-07-06 12:02:01,637 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 12:02:01,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:01,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 12:02:01,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:02:01,637 INFO L87 Difference]: Start difference. First operand 833 states and 1141 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:02,939 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2021-07-06 12:02:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:04,545 INFO L93 Difference]: Finished difference Result 957 states and 1356 transitions. [2021-07-06 12:02:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-06 12:02:04,545 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2021-07-06 12:02:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:04,548 INFO L225 Difference]: With dead ends: 957 [2021-07-06 12:02:04,548 INFO L226 Difference]: Without dead ends: 957 [2021-07-06 12:02:04,548 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 599.6ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-07-06 12:02:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-07-06 12:02:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2021-07-06 12:02:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.361963190184049) internal successors, (888), 665 states have internal predecessors, (888), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2021-07-06 12:02:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1140 transitions. [2021-07-06 12:02:04,564 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1140 transitions. Word has length 53 [2021-07-06 12:02:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:04,564 INFO L442 AbstractCegarLoop]: Abstraction has 833 states and 1140 transitions. [2021-07-06 12:02:04,564 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1140 transitions. [2021-07-06 12:02:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-06 12:02:04,567 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:04,567 INFO L525 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] [2021-07-06 12:02:04,567 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-06 12:02:04,567 INFO L374 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:04,567 INFO L82 PathProgramCache]: Analyzing trace with hash 196258149, now seen corresponding path program 1 times [2021-07-06 12:02:04,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:04,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743372718] [2021-07-06 12:02:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:04,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:04,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:04,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:04,604 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:02:04,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:02:04,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:04,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:04,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:04,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:04,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:02:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:04,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:04,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:02:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:04,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:04,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:04,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:04,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:04,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:04,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:04,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743372718] [2021-07-06 12:02:04,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743372718] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:04,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:04,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-06 12:02:04,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255036934] [2021-07-06 12:02:04,788 INFO L425 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-06 12:02:04,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:04,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-06 12:02:04,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-06 12:02:04,789 INFO L87 Difference]: Start difference. First operand 833 states and 1140 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-07-06 12:02:06,094 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-07-06 12:02:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:07,765 INFO L93 Difference]: Finished difference Result 963 states and 1360 transitions. [2021-07-06 12:02:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-06 12:02:07,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-07-06 12:02:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:07,768 INFO L225 Difference]: With dead ends: 963 [2021-07-06 12:02:07,768 INFO L226 Difference]: Without dead ends: 931 [2021-07-06 12:02:07,768 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 563.1ms TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-07-06 12:02:07,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-07-06 12:02:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 805. [2021-07-06 12:02:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.370429252782194) internal successors, (862), 641 states have internal predecessors, (862), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2021-07-06 12:02:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1108 transitions. [2021-07-06 12:02:07,787 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1108 transitions. Word has length 52 [2021-07-06 12:02:07,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:07,787 INFO L442 AbstractCegarLoop]: Abstraction has 805 states and 1108 transitions. [2021-07-06 12:02:07,787 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-07-06 12:02:07,787 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1108 transitions. [2021-07-06 12:02:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-06 12:02:07,789 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:07,789 INFO L525 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] [2021-07-06 12:02:07,789 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-06 12:02:07,789 INFO L374 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:07,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:07,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1690613202, now seen corresponding path program 1 times [2021-07-06 12:02:07,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:07,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826965647] [2021-07-06 12:02:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:07,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:07,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:07,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:07,841 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:02:07,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:02:07,848 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:02:07,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:02:07,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:07,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:07,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:07,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:07,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:07,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:02:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:07,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:07,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:08,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:08,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:08,031 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-07-06 12:02:08,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 12:02:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:08,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:08,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:08,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:08,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:08,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:08,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:08,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:08,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:08,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:08,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:08,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826965647] [2021-07-06 12:02:08,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826965647] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:08,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:08,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 12:02:08,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72401796] [2021-07-06 12:02:08,101 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 12:02:08,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:08,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 12:02:08,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:02:08,102 INFO L87 Difference]: Start difference. First operand 805 states and 1108 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:09,446 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2021-07-06 12:02:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:10,422 INFO L93 Difference]: Finished difference Result 927 states and 1321 transitions. [2021-07-06 12:02:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-06 12:02:10,422 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2021-07-06 12:02:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:10,425 INFO L225 Difference]: With dead ends: 927 [2021-07-06 12:02:10,425 INFO L226 Difference]: Without dead ends: 927 [2021-07-06 12:02:10,425 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 595.4ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-07-06 12:02:10,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-07-06 12:02:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 805. [2021-07-06 12:02:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.368839427662957) internal successors, (861), 641 states have internal predecessors, (861), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2021-07-06 12:02:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1107 transitions. [2021-07-06 12:02:10,440 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1107 transitions. Word has length 54 [2021-07-06 12:02:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:10,440 INFO L442 AbstractCegarLoop]: Abstraction has 805 states and 1107 transitions. [2021-07-06 12:02:10,440 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1107 transitions. [2021-07-06 12:02:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-06 12:02:10,442 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:10,442 INFO L525 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] [2021-07-06 12:02:10,442 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-06 12:02:10,442 INFO L374 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:10,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1181552496, now seen corresponding path program 1 times [2021-07-06 12:02:10,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:10,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91862262] [2021-07-06 12:02:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:10,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:10,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:10,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:10,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:10,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:10,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:10,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:10,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:10,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:10,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:10,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:10,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:10,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:10,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:10,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:10,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:10,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:10,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:10,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:10,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:10,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:10,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:10,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91862262] [2021-07-06 12:02:10,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91862262] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:10,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:10,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-06 12:02:10,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519998013] [2021-07-06 12:02:10,733 INFO L425 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-06 12:02:10,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:10,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-06 12:02:10,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:02:10,734 INFO L87 Difference]: Start difference. First operand 805 states and 1107 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:13,020 INFO L93 Difference]: Finished difference Result 953 states and 1353 transitions. [2021-07-06 12:02:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-06 12:02:13,021 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2021-07-06 12:02:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:13,024 INFO L225 Difference]: With dead ends: 953 [2021-07-06 12:02:13,024 INFO L226 Difference]: Without dead ends: 916 [2021-07-06 12:02:13,024 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 316.7ms TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:02:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-07-06 12:02:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 796. [2021-07-06 12:02:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 622 states have (on average 1.3520900321543408) internal successors, (841), 634 states have internal predecessors, (841), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2021-07-06 12:02:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1083 transitions. [2021-07-06 12:02:13,039 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1083 transitions. Word has length 55 [2021-07-06 12:02:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:13,039 INFO L442 AbstractCegarLoop]: Abstraction has 796 states and 1083 transitions. [2021-07-06 12:02:13,040 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1083 transitions. [2021-07-06 12:02:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-06 12:02:13,042 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:13,042 INFO L525 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] [2021-07-06 12:02:13,042 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-06 12:02:13,042 INFO L374 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:13,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1984424538, now seen corresponding path program 1 times [2021-07-06 12:02:13,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:13,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15592662] [2021-07-06 12:02:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:13,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:13,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:13,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:13,075 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-06 12:02:13,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:02:13,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:13,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:13,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:13,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:02:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:13,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:13,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:13,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:13,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:13,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:13,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:13,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:13,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:13,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:13,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:13,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:13,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15592662] [2021-07-06 12:02:13,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15592662] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:13,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:13,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-06 12:02:13,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989934234] [2021-07-06 12:02:13,356 INFO L425 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-06 12:02:13,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:13,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-06 12:02:13,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:02:13,357 INFO L87 Difference]: Start difference. First operand 796 states and 1083 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:02:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:16,060 INFO L93 Difference]: Finished difference Result 929 states and 1307 transitions. [2021-07-06 12:02:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-06 12:02:16,060 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2021-07-06 12:02:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:16,063 INFO L225 Difference]: With dead ends: 929 [2021-07-06 12:02:16,063 INFO L226 Difference]: Without dead ends: 914 [2021-07-06 12:02:16,063 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 238.2ms TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-07-06 12:02:16,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-07-06 12:02:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 794. [2021-07-06 12:02:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3510466988727858) internal successors, (839), 633 states have internal predecessors, (839), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2021-07-06 12:02:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1079 transitions. [2021-07-06 12:02:16,077 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1079 transitions. Word has length 56 [2021-07-06 12:02:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:16,077 INFO L442 AbstractCegarLoop]: Abstraction has 794 states and 1079 transitions. [2021-07-06 12:02:16,078 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:02:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1079 transitions. [2021-07-06 12:02:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-06 12:02:16,080 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:16,080 INFO L525 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] [2021-07-06 12:02:16,080 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-06 12:02:16,080 INFO L374 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:16,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash -417622987, now seen corresponding path program 1 times [2021-07-06 12:02:16,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:16,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178674341] [2021-07-06 12:02:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:16,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:16,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:16,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:16,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:16,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:16,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:16,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:16,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:02:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:16,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:16,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:16,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:16,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:16,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:16,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:16,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:16,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:16,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:16,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:16,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:16,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178674341] [2021-07-06 12:02:16,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178674341] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:16,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:16,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-06 12:02:16,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50687595] [2021-07-06 12:02:16,375 INFO L425 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-06 12:02:16,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:16,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-06 12:02:16,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:02:16,376 INFO L87 Difference]: Start difference. First operand 794 states and 1079 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:02:19,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:19,329 INFO L93 Difference]: Finished difference Result 924 states and 1300 transitions. [2021-07-06 12:02:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-06 12:02:19,330 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2021-07-06 12:02:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:19,332 INFO L225 Difference]: With dead ends: 924 [2021-07-06 12:02:19,332 INFO L226 Difference]: Without dead ends: 909 [2021-07-06 12:02:19,333 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 213.6ms TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-07-06 12:02:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-07-06 12:02:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 789. [2021-07-06 12:02:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3511326860841424) internal successors, (835), 630 states have internal predecessors, (835), 104 states have call successors, (104), 49 states have call predecessors, (104), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2021-07-06 12:02:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1072 transitions. [2021-07-06 12:02:19,346 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1072 transitions. Word has length 55 [2021-07-06 12:02:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:19,346 INFO L442 AbstractCegarLoop]: Abstraction has 789 states and 1072 transitions. [2021-07-06 12:02:19,346 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:02:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1072 transitions. [2021-07-06 12:02:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-06 12:02:19,348 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:19,349 INFO L525 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] [2021-07-06 12:02:19,349 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-06 12:02:19,349 INFO L374 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash -421794702, now seen corresponding path program 1 times [2021-07-06 12:02:19,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:19,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023528877] [2021-07-06 12:02:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:19,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:19,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:19,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:19,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:19,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:19,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:02:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:19,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:19,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:02:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:19,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:19,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:19,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:19,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:19,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023528877] [2021-07-06 12:02:19,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023528877] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:19,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:19,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-06 12:02:19,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237221070] [2021-07-06 12:02:19,569 INFO L425 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-06 12:02:19,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:19,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-06 12:02:19,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-07-06 12:02:19,569 INFO L87 Difference]: Start difference. First operand 789 states and 1072 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:21,193 INFO L93 Difference]: Finished difference Result 931 states and 1303 transitions. [2021-07-06 12:02:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-06 12:02:21,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-07-06 12:02:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:21,196 INFO L225 Difference]: With dead ends: 931 [2021-07-06 12:02:21,196 INFO L226 Difference]: Without dead ends: 931 [2021-07-06 12:02:21,196 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 336.4ms TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-07-06 12:02:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-07-06 12:02:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 789. [2021-07-06 12:02:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3495145631067962) internal successors, (834), 630 states have internal predecessors, (834), 104 states have call successors, (104), 49 states have call predecessors, (104), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2021-07-06 12:02:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1071 transitions. [2021-07-06 12:02:21,210 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1071 transitions. Word has length 56 [2021-07-06 12:02:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:21,210 INFO L442 AbstractCegarLoop]: Abstraction has 789 states and 1071 transitions. [2021-07-06 12:02:21,210 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:21,210 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1071 transitions. [2021-07-06 12:02:21,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-07-06 12:02:21,212 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:21,213 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:21,213 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-06 12:02:21,213 INFO L374 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:21,213 INFO L82 PathProgramCache]: Analyzing trace with hash 834203834, now seen corresponding path program 1 times [2021-07-06 12:02:21,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:21,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957839888] [2021-07-06 12:02:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:21,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:21,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:21,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:21,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:21,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:21,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:21,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:21,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-07-06 12:02:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:21,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:21,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-07-06 12:02:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:21,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:21,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:02:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:21,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:21,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:21,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:21,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957839888] [2021-07-06 12:02:21,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957839888] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:21,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:21,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-06 12:02:21,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045119911] [2021-07-06 12:02:21,430 INFO L425 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-06 12:02:21,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:21,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-06 12:02:21,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:02:21,431 INFO L87 Difference]: Start difference. First operand 789 states and 1071 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:02:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:22,999 INFO L93 Difference]: Finished difference Result 778 states and 1042 transitions. [2021-07-06 12:02:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:02:22,999 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2021-07-06 12:02:22,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:23,001 INFO L225 Difference]: With dead ends: 778 [2021-07-06 12:02:23,001 INFO L226 Difference]: Without dead ends: 778 [2021-07-06 12:02:23,002 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 295.2ms TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-07-06 12:02:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-07-06 12:02:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2021-07-06 12:02:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 609 states have (on average 1.341543513957307) internal successors, (817), 620 states have internal predecessors, (817), 103 states have call successors, (103), 49 states have call predecessors, (103), 65 states have return successors, (122), 115 states have call predecessors, (122), 97 states have call successors, (122) [2021-07-06 12:02:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1042 transitions. [2021-07-06 12:02:23,012 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1042 transitions. Word has length 73 [2021-07-06 12:02:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:23,013 INFO L442 AbstractCegarLoop]: Abstraction has 778 states and 1042 transitions. [2021-07-06 12:02:23,013 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:02:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1042 transitions. [2021-07-06 12:02:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-06 12:02:23,015 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:23,015 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:23,015 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-06 12:02:23,015 INFO L374 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:23,016 INFO L82 PathProgramCache]: Analyzing trace with hash 767096470, now seen corresponding path program 1 times [2021-07-06 12:02:23,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:23,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943202478] [2021-07-06 12:02:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:23,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:23,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:23,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:23,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:23,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:23,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:23,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:23,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:23,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-07-06 12:02:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:23,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:23,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:23,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:23,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:02:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:23,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:23,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:23,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:23,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943202478] [2021-07-06 12:02:23,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943202478] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:23,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:23,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-06 12:02:23,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238851766] [2021-07-06 12:02:23,196 INFO L425 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-06 12:02:23,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:23,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-06 12:02:23,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-07-06 12:02:23,197 INFO L87 Difference]: Start difference. First operand 778 states and 1042 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:02:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:24,399 INFO L93 Difference]: Finished difference Result 820 states and 1085 transitions. [2021-07-06 12:02:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-06 12:02:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2021-07-06 12:02:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:24,402 INFO L225 Difference]: With dead ends: 820 [2021-07-06 12:02:24,402 INFO L226 Difference]: Without dead ends: 820 [2021-07-06 12:02:24,402 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 197.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-07-06 12:02:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-07-06 12:02:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 788. [2021-07-06 12:02:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 616 states have (on average 1.3327922077922079) internal successors, (821), 627 states have internal predecessors, (821), 103 states have call successors, (103), 51 states have call predecessors, (103), 68 states have return successors, (124), 116 states have call predecessors, (124), 98 states have call successors, (124) [2021-07-06 12:02:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1048 transitions. [2021-07-06 12:02:24,414 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1048 transitions. Word has length 61 [2021-07-06 12:02:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:24,415 INFO L442 AbstractCegarLoop]: Abstraction has 788 states and 1048 transitions. [2021-07-06 12:02:24,415 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:02:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1048 transitions. [2021-07-06 12:02:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-06 12:02:24,417 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:24,417 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:24,417 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-06 12:02:24,417 INFO L374 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:24,418 INFO L82 PathProgramCache]: Analyzing trace with hash 83008892, now seen corresponding path program 1 times [2021-07-06 12:02:24,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:24,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499000285] [2021-07-06 12:02:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:24,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:24,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:24,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:24,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:24,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:24,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:24,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:24,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:24,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:24,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:24,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:24,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:24,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:24,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:24,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:24,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:24,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:24,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-07-06 12:02:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:24,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:24,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:24,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:24,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:24,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:24,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:24,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499000285] [2021-07-06 12:02:24,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499000285] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:24,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:24,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-07-06 12:02:24,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205890883] [2021-07-06 12:02:24,796 INFO L425 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-06 12:02:24,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:24,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-06 12:02:24,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-07-06 12:02:24,797 INFO L87 Difference]: Start difference. First operand 788 states and 1048 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:02:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:27,854 INFO L93 Difference]: Finished difference Result 811 states and 1073 transitions. [2021-07-06 12:02:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-06 12:02:27,854 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2021-07-06 12:02:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:27,856 INFO L225 Difference]: With dead ends: 811 [2021-07-06 12:02:27,857 INFO L226 Difference]: Without dead ends: 790 [2021-07-06 12:02:27,857 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 529.6ms TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-07-06 12:02:27,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-07-06 12:02:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 786. [2021-07-06 12:02:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 615 states have (on average 1.3317073170731708) internal successors, (819), 626 states have internal predecessors, (819), 102 states have call successors, (102), 51 states have call predecessors, (102), 68 states have return successors, (123), 115 states have call predecessors, (123), 97 states have call successors, (123) [2021-07-06 12:02:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1044 transitions. [2021-07-06 12:02:27,870 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1044 transitions. Word has length 62 [2021-07-06 12:02:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:27,870 INFO L442 AbstractCegarLoop]: Abstraction has 786 states and 1044 transitions. [2021-07-06 12:02:27,870 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:02:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1044 transitions. [2021-07-06 12:02:27,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-06 12:02:27,872 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:27,872 INFO L525 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] [2021-07-06 12:02:27,872 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-06 12:02:27,872 INFO L374 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash -344108715, now seen corresponding path program 1 times [2021-07-06 12:02:27,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:27,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546427886] [2021-07-06 12:02:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:27,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:27,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:27,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:27,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:27,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:27,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:27,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:27,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:27,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:27,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:27,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:28,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:28,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:28,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:28,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:28,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:28,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:28,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:28,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:28,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:28,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:28,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:28,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:28,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:28,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:28,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:28,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:28,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546427886] [2021-07-06 12:02:28,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546427886] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:28,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:28,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-07-06 12:02:28,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176035047] [2021-07-06 12:02:28,239 INFO L425 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-06 12:02:28,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:28,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-06 12:02:28,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-07-06 12:02:28,240 INFO L87 Difference]: Start difference. First operand 786 states and 1044 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:02:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:31,199 INFO L93 Difference]: Finished difference Result 809 states and 1069 transitions. [2021-07-06 12:02:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-06 12:02:31,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2021-07-06 12:02:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:31,202 INFO L225 Difference]: With dead ends: 809 [2021-07-06 12:02:31,202 INFO L226 Difference]: Without dead ends: 787 [2021-07-06 12:02:31,202 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 499.4ms TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-07-06 12:02:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-07-06 12:02:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 785. [2021-07-06 12:02:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 614 states have (on average 1.3159609120521172) internal successors, (808), 625 states have internal predecessors, (808), 102 states have call successors, (102), 51 states have call predecessors, (102), 68 states have return successors, (123), 115 states have call predecessors, (123), 97 states have call successors, (123) [2021-07-06 12:02:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1033 transitions. [2021-07-06 12:02:31,213 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1033 transitions. Word has length 59 [2021-07-06 12:02:31,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:31,213 INFO L442 AbstractCegarLoop]: Abstraction has 785 states and 1033 transitions. [2021-07-06 12:02:31,214 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:02:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1033 transitions. [2021-07-06 12:02:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-06 12:02:31,215 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:31,216 INFO L525 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] [2021-07-06 12:02:31,216 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-06 12:02:31,216 INFO L374 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:31,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:31,216 INFO L82 PathProgramCache]: Analyzing trace with hash 562449349, now seen corresponding path program 1 times [2021-07-06 12:02:31,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:31,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824521232] [2021-07-06 12:02:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:31,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:31,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:31,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:31,244 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-06 12:02:31,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:02:31,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:31,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:31,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:31,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:31,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:31,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:31,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:31,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:31,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:31,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:31,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:31,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:31,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:31,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:31,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:31,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:31,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824521232] [2021-07-06 12:02:31,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824521232] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:31,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:31,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-06 12:02:31,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551384988] [2021-07-06 12:02:31,538 INFO L425 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-06 12:02:31,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:31,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-06 12:02:31,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-07-06 12:02:31,538 INFO L87 Difference]: Start difference. First operand 785 states and 1033 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:02:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:34,004 INFO L93 Difference]: Finished difference Result 799 states and 1048 transitions. [2021-07-06 12:02:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-06 12:02:34,005 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2021-07-06 12:02:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:34,012 INFO L225 Difference]: With dead ends: 799 [2021-07-06 12:02:34,012 INFO L226 Difference]: Without dead ends: 782 [2021-07-06 12:02:34,013 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 262.6ms TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-07-06 12:02:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-07-06 12:02:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 782. [2021-07-06 12:02:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 612 states have (on average 1.315359477124183) internal successors, (805), 623 states have internal predecessors, (805), 101 states have call successors, (101), 51 states have call predecessors, (101), 68 states have return successors, (122), 114 states have call predecessors, (122), 96 states have call successors, (122) [2021-07-06 12:02:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1028 transitions. [2021-07-06 12:02:34,030 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1028 transitions. Word has length 58 [2021-07-06 12:02:34,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:34,030 INFO L442 AbstractCegarLoop]: Abstraction has 782 states and 1028 transitions. [2021-07-06 12:02:34,030 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-07-06 12:02:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1028 transitions. [2021-07-06 12:02:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-06 12:02:34,032 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:34,032 INFO L525 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] [2021-07-06 12:02:34,033 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-06 12:02:34,033 INFO L374 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:34,033 INFO L82 PathProgramCache]: Analyzing trace with hash 608641290, now seen corresponding path program 1 times [2021-07-06 12:02:34,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:34,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502578570] [2021-07-06 12:02:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:34,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:34,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:34,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:34,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:34,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:34,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:34,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:34,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:34,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:34,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:34,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:34,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:34,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:34,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:34,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:34,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-07-06 12:02:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:34,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:34,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:34,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:34,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502578570] [2021-07-06 12:02:34,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502578570] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:34,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:34,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-06 12:02:34,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033961403] [2021-07-06 12:02:34,312 INFO L425 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-06 12:02:34,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:34,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-06 12:02:34,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:02:34,313 INFO L87 Difference]: Start difference. First operand 782 states and 1028 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:36,345 INFO L93 Difference]: Finished difference Result 801 states and 1048 transitions. [2021-07-06 12:02:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-06 12:02:36,346 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2021-07-06 12:02:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:36,348 INFO L225 Difference]: With dead ends: 801 [2021-07-06 12:02:36,348 INFO L226 Difference]: Without dead ends: 770 [2021-07-06 12:02:36,348 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 349.1ms TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:02:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-07-06 12:02:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2021-07-06 12:02:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 603 states have (on average 1.3101160862354893) internal successors, (790), 614 states have internal predecessors, (790), 98 states have call successors, (98), 51 states have call predecessors, (98), 68 states have return successors, (119), 111 states have call predecessors, (119), 93 states have call successors, (119) [2021-07-06 12:02:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1007 transitions. [2021-07-06 12:02:36,357 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1007 transitions. Word has length 59 [2021-07-06 12:02:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:36,358 INFO L442 AbstractCegarLoop]: Abstraction has 770 states and 1007 transitions. [2021-07-06 12:02:36,358 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1007 transitions. [2021-07-06 12:02:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-06 12:02:36,360 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:36,360 INFO L525 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] [2021-07-06 12:02:36,360 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-06 12:02:36,360 INFO L374 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1848378613, now seen corresponding path program 1 times [2021-07-06 12:02:36,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:36,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818943856] [2021-07-06 12:02:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:36,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:36,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:36,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:36,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:36,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:36,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:36,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:36,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:36,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-07-06 12:02:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:36,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:36,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:36,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:36,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818943856] [2021-07-06 12:02:36,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818943856] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:36,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:36,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-06 12:02:36,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103832411] [2021-07-06 12:02:36,586 INFO L425 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-06 12:02:36,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:36,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-06 12:02:36,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:02:36,587 INFO L87 Difference]: Start difference. First operand 770 states and 1007 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:02:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:38,017 INFO L93 Difference]: Finished difference Result 808 states and 1067 transitions. [2021-07-06 12:02:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-06 12:02:38,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-07-06 12:02:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:38,019 INFO L225 Difference]: With dead ends: 808 [2021-07-06 12:02:38,019 INFO L226 Difference]: Without dead ends: 808 [2021-07-06 12:02:38,020 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-06 12:02:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-07-06 12:02:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 777. [2021-07-06 12:02:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 608 states have (on average 1.3108552631578947) internal successors, (797), 620 states have internal predecessors, (797), 99 states have call successors, (99), 51 states have call predecessors, (99), 69 states have return successors, (126), 112 states have call predecessors, (126), 94 states have call successors, (126) [2021-07-06 12:02:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1022 transitions. [2021-07-06 12:02:38,030 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1022 transitions. Word has length 60 [2021-07-06 12:02:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:38,030 INFO L442 AbstractCegarLoop]: Abstraction has 777 states and 1022 transitions. [2021-07-06 12:02:38,030 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:02:38,031 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1022 transitions. [2021-07-06 12:02:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-06 12:02:38,032 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:38,032 INFO L525 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] [2021-07-06 12:02:38,032 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-06 12:02:38,033 INFO L374 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:38,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:38,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2123138227, now seen corresponding path program 1 times [2021-07-06 12:02:38,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:38,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034909710] [2021-07-06 12:02:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:38,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:38,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:38,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:38,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:38,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:38,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:38,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:38,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:38,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:38,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:38,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:38,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:38,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-07-06 12:02:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:38,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:38,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:38,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:38,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034909710] [2021-07-06 12:02:38,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034909710] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:38,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:38,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-06 12:02:38,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864268844] [2021-07-06 12:02:38,339 INFO L425 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-06 12:02:38,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-06 12:02:38,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-07-06 12:02:38,339 INFO L87 Difference]: Start difference. First operand 777 states and 1022 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:02:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:40,292 INFO L93 Difference]: Finished difference Result 796 states and 1042 transitions. [2021-07-06 12:02:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-06 12:02:40,293 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-07-06 12:02:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:40,295 INFO L225 Difference]: With dead ends: 796 [2021-07-06 12:02:40,295 INFO L226 Difference]: Without dead ends: 775 [2021-07-06 12:02:40,295 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 271.3ms TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:02:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-07-06 12:02:40,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2021-07-06 12:02:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 607 states have (on average 1.3097199341021417) internal successors, (795), 619 states have internal predecessors, (795), 98 states have call successors, (98), 51 states have call predecessors, (98), 69 states have return successors, (125), 111 states have call predecessors, (125), 93 states have call successors, (125) [2021-07-06 12:02:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1018 transitions. [2021-07-06 12:02:40,305 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1018 transitions. Word has length 60 [2021-07-06 12:02:40,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:40,306 INFO L442 AbstractCegarLoop]: Abstraction has 775 states and 1018 transitions. [2021-07-06 12:02:40,306 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:02:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1018 transitions. [2021-07-06 12:02:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-06 12:02:40,307 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:40,308 INFO L525 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] [2021-07-06 12:02:40,308 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-06 12:02:40,308 INFO L374 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1629190440, now seen corresponding path program 1 times [2021-07-06 12:02:40,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:40,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500564103] [2021-07-06 12:02:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:40,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:40,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:40,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:40,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:40,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:40,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:40,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:40,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:40,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-06 12:02:40,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-07-06 12:02:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:40,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:40,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:40,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:40,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500564103] [2021-07-06 12:02:40,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500564103] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:40,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:40,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-06 12:02:40,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139288086] [2021-07-06 12:02:40,584 INFO L425 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-06 12:02:40,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:40,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-06 12:02:40,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:02:40,585 INFO L87 Difference]: Start difference. First operand 775 states and 1018 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:42,045 INFO L93 Difference]: Finished difference Result 777 states and 1019 transitions. [2021-07-06 12:02:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-06 12:02:42,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2021-07-06 12:02:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:42,047 INFO L225 Difference]: With dead ends: 777 [2021-07-06 12:02:42,047 INFO L226 Difference]: Without dead ends: 777 [2021-07-06 12:02:42,047 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 270.9ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:02:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-07-06 12:02:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 775. [2021-07-06 12:02:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 607 states have (on average 1.3080724876441516) internal successors, (794), 619 states have internal predecessors, (794), 98 states have call successors, (98), 51 states have call predecessors, (98), 69 states have return successors, (125), 111 states have call predecessors, (125), 93 states have call successors, (125) [2021-07-06 12:02:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1017 transitions. [2021-07-06 12:02:42,056 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1017 transitions. Word has length 60 [2021-07-06 12:02:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:42,057 INFO L442 AbstractCegarLoop]: Abstraction has 775 states and 1017 transitions. [2021-07-06 12:02:42,057 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1017 transitions. [2021-07-06 12:02:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-06 12:02:42,058 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:42,059 INFO L525 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] [2021-07-06 12:02:42,059 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-06 12:02:42,059 INFO L374 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2138663530, now seen corresponding path program 1 times [2021-07-06 12:02:42,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:42,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581305155] [2021-07-06 12:02:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:42,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:42,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:42,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:42,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:42,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:42,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:42,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:42,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:42,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:42,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:42,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:42,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:42,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:42,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:42,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:42,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:42,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-07-06 12:02:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:42,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:42,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:42,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:42,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581305155] [2021-07-06 12:02:42,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581305155] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:42,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:42,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-06 12:02:42,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941687326] [2021-07-06 12:02:42,344 INFO L425 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-06 12:02:42,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:42,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-06 12:02:42,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:02:42,345 INFO L87 Difference]: Start difference. First operand 775 states and 1017 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:44,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:44,457 INFO L93 Difference]: Finished difference Result 803 states and 1051 transitions. [2021-07-06 12:02:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-06 12:02:44,458 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2021-07-06 12:02:44,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:44,459 INFO L225 Difference]: With dead ends: 803 [2021-07-06 12:02:44,459 INFO L226 Difference]: Without dead ends: 767 [2021-07-06 12:02:44,459 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 335.9ms TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:02:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-07-06 12:02:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2021-07-06 12:02:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 601 states have (on average 1.302828618968386) internal successors, (783), 613 states have internal predecessors, (783), 96 states have call successors, (96), 51 states have call predecessors, (96), 69 states have return successors, (123), 109 states have call predecessors, (123), 91 states have call successors, (123) [2021-07-06 12:02:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1002 transitions. [2021-07-06 12:02:44,468 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1002 transitions. Word has length 60 [2021-07-06 12:02:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:44,469 INFO L442 AbstractCegarLoop]: Abstraction has 767 states and 1002 transitions. [2021-07-06 12:02:44,469 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-07-06 12:02:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1002 transitions. [2021-07-06 12:02:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-06 12:02:44,471 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:44,471 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:44,471 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-06 12:02:44,471 INFO L374 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:44,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1395686416, now seen corresponding path program 1 times [2021-07-06 12:02:44,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:44,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525783143] [2021-07-06 12:02:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:44,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:44,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:44,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:44,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:44,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:44,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:44,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:44,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:44,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:44,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-07-06 12:02:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:44,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:44,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:44,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:44,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525783143] [2021-07-06 12:02:44,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525783143] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:44,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:44,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:02:44,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564024334] [2021-07-06 12:02:44,726 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:02:44,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:44,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:02:44,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:02:44,727 INFO L87 Difference]: Start difference. First operand 767 states and 1002 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:02:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:46,725 INFO L93 Difference]: Finished difference Result 781 states and 1035 transitions. [2021-07-06 12:02:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:02:46,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2021-07-06 12:02:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:46,727 INFO L225 Difference]: With dead ends: 781 [2021-07-06 12:02:46,727 INFO L226 Difference]: Without dead ends: 779 [2021-07-06 12:02:46,727 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 407.6ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:02:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-07-06 12:02:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 771. [2021-07-06 12:02:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 603 states have (on average 1.3018242122719734) internal successors, (785), 617 states have internal predecessors, (785), 96 states have call successors, (96), 51 states have call predecessors, (96), 71 states have return successors, (139), 109 states have call predecessors, (139), 91 states have call successors, (139) [2021-07-06 12:02:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1020 transitions. [2021-07-06 12:02:46,736 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1020 transitions. Word has length 61 [2021-07-06 12:02:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:46,736 INFO L442 AbstractCegarLoop]: Abstraction has 771 states and 1020 transitions. [2021-07-06 12:02:46,736 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:02:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1020 transitions. [2021-07-06 12:02:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-07-06 12:02:46,737 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:46,737 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:46,738 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-06 12:02:46,738 INFO L374 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash 670644494, now seen corresponding path program 1 times [2021-07-06 12:02:46,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:46,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159173238] [2021-07-06 12:02:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:46,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:46,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:46,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:46,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:46,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:46,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:46,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:46,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:46,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:46,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:46,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:46,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:02:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:46,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:46,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:46,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:46,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:47,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:47,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:47,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:47,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:47,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:47,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:47,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:47,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:47,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:47,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:47,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:47,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:47,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:47,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159173238] [2021-07-06 12:02:47,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159173238] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:47,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:47,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-06 12:02:47,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259110599] [2021-07-06 12:02:47,086 INFO L425 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-06 12:02:47,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:47,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-06 12:02:47,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:02:47,087 INFO L87 Difference]: Start difference. First operand 771 states and 1020 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:02:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:49,773 INFO L93 Difference]: Finished difference Result 785 states and 1035 transitions. [2021-07-06 12:02:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 12:02:49,774 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-07-06 12:02:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:49,775 INFO L225 Difference]: With dead ends: 785 [2021-07-06 12:02:49,776 INFO L226 Difference]: Without dead ends: 766 [2021-07-06 12:02:49,776 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 309.5ms TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-07-06 12:02:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-07-06 12:02:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2021-07-06 12:02:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 600 states have (on average 1.3016666666666667) internal successors, (781), 614 states have internal predecessors, (781), 95 states have call successors, (95), 51 states have call predecessors, (95), 70 states have return successors, (137), 107 states have call predecessors, (137), 90 states have call successors, (137) [2021-07-06 12:02:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1013 transitions. [2021-07-06 12:02:49,790 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1013 transitions. Word has length 63 [2021-07-06 12:02:49,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:49,790 INFO L442 AbstractCegarLoop]: Abstraction has 766 states and 1013 transitions. [2021-07-06 12:02:49,790 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:02:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1013 transitions. [2021-07-06 12:02:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-06 12:02:49,792 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:49,792 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:49,792 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-06 12:02:49,792 INFO L374 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash -419081547, now seen corresponding path program 1 times [2021-07-06 12:02:49,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:49,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323669669] [2021-07-06 12:02:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:49,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:49,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:49,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:49,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:49,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:49,823 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-06 12:02:49,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:02:49,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:49,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:49,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:49,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:49,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:49,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:49,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:49,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:49,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:49,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:50,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:50,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:50,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:50,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:50,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:50,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:50,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:50,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:50,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:50,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323669669] [2021-07-06 12:02:50,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323669669] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:50,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:50,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-06 12:02:50,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36542310] [2021-07-06 12:02:50,190 INFO L425 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-06 12:02:50,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:50,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-06 12:02:50,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:02:50,191 INFO L87 Difference]: Start difference. First operand 766 states and 1013 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:02:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:53,006 INFO L93 Difference]: Finished difference Result 780 states and 1028 transitions. [2021-07-06 12:02:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 12:02:53,007 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2021-07-06 12:02:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:53,009 INFO L225 Difference]: With dead ends: 780 [2021-07-06 12:02:53,009 INFO L226 Difference]: Without dead ends: 761 [2021-07-06 12:02:53,009 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 324.4ms TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:02:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-07-06 12:02:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2021-07-06 12:02:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 597 states have (on average 1.3015075376884422) internal successors, (777), 611 states have internal predecessors, (777), 94 states have call successors, (94), 51 states have call predecessors, (94), 69 states have return successors, (135), 105 states have call predecessors, (135), 89 states have call successors, (135) [2021-07-06 12:02:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1006 transitions. [2021-07-06 12:02:53,019 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1006 transitions. Word has length 62 [2021-07-06 12:02:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:53,019 INFO L442 AbstractCegarLoop]: Abstraction has 761 states and 1006 transitions. [2021-07-06 12:02:53,019 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:02:53,019 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1006 transitions. [2021-07-06 12:02:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-07-06 12:02:53,021 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:53,021 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:53,021 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-06 12:02:53,022 INFO L374 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:53,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:53,022 INFO L82 PathProgramCache]: Analyzing trace with hash -520129943, now seen corresponding path program 1 times [2021-07-06 12:02:53,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:53,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035831731] [2021-07-06 12:02:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:53,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:53,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:53,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:53,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:53,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:53,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:53,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:02:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:53,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:53,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:53,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:53,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:53,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035831731] [2021-07-06 12:02:53,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035831731] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:53,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:53,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-07-06 12:02:53,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761275672] [2021-07-06 12:02:53,409 INFO L425 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-06 12:02:53,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:53,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-06 12:02:53,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:02:53,409 INFO L87 Difference]: Start difference. First operand 761 states and 1006 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-07-06 12:02:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:56,065 INFO L93 Difference]: Finished difference Result 782 states and 1028 transitions. [2021-07-06 12:02:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-06 12:02:56,065 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2021-07-06 12:02:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:56,067 INFO L225 Difference]: With dead ends: 782 [2021-07-06 12:02:56,067 INFO L226 Difference]: Without dead ends: 761 [2021-07-06 12:02:56,067 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 532.9ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-07-06 12:02:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-07-06 12:02:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 759. [2021-07-06 12:02:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 596 states have (on average 1.3003355704697988) internal successors, (775), 610 states have internal predecessors, (775), 93 states have call successors, (93), 51 states have call predecessors, (93), 69 states have return successors, (134), 104 states have call predecessors, (134), 88 states have call successors, (134) [2021-07-06 12:02:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1002 transitions. [2021-07-06 12:02:56,077 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1002 transitions. Word has length 67 [2021-07-06 12:02:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:56,077 INFO L442 AbstractCegarLoop]: Abstraction has 759 states and 1002 transitions. [2021-07-06 12:02:56,077 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-07-06 12:02:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1002 transitions. [2021-07-06 12:02:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-07-06 12:02:56,079 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:56,079 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:56,079 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-06 12:02:56,079 INFO L374 AbstractCegarLoop]: === Iteration 40 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:56,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:56,080 INFO L82 PathProgramCache]: Analyzing trace with hash -82376893, now seen corresponding path program 1 times [2021-07-06 12:02:56,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:56,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803463463] [2021-07-06 12:02:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:56,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:56,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:56,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:56,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:56,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:56,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:56,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:56,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-07-06 12:02:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:56,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:56,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:56,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:56,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:56,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:56,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803463463] [2021-07-06 12:02:56,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803463463] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:56,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:56,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-07-06 12:02:56,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745272535] [2021-07-06 12:02:56,444 INFO L425 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-06 12:02:56,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:56,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-06 12:02:56,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:02:56,445 INFO L87 Difference]: Start difference. First operand 759 states and 1002 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-07-06 12:02:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:02:58,802 INFO L93 Difference]: Finished difference Result 780 states and 1024 transitions. [2021-07-06 12:02:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-06 12:02:58,802 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2021-07-06 12:02:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:02:58,804 INFO L225 Difference]: With dead ends: 780 [2021-07-06 12:02:58,804 INFO L226 Difference]: Without dead ends: 759 [2021-07-06 12:02:58,804 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 495.2ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-07-06 12:02:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-07-06 12:02:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 757. [2021-07-06 12:02:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 595 states have (on average 1.2991596638655463) internal successors, (773), 609 states have internal predecessors, (773), 92 states have call successors, (92), 51 states have call predecessors, (92), 69 states have return successors, (133), 103 states have call predecessors, (133), 87 states have call successors, (133) [2021-07-06 12:02:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 998 transitions. [2021-07-06 12:02:58,813 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 998 transitions. Word has length 66 [2021-07-06 12:02:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:02:58,813 INFO L442 AbstractCegarLoop]: Abstraction has 757 states and 998 transitions. [2021-07-06 12:02:58,813 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-07-06 12:02:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 998 transitions. [2021-07-06 12:02:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-07-06 12:02:58,815 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:02:58,815 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:02:58,815 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-06 12:02:58,815 INFO L374 AbstractCegarLoop]: === Iteration 41 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:02:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:02:58,816 INFO L82 PathProgramCache]: Analyzing trace with hash -769242967, now seen corresponding path program 1 times [2021-07-06 12:02:58,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:02:58,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322898606] [2021-07-06 12:02:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:02:58,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:02:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:58,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:58,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:58,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:58,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:58,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:58,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:02:58,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:58,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:02:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:58,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:58,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:02:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:58,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:58,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:02:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:58,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:58,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:58,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:02:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:59,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:59,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:59,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:59,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:59,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:02:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:59,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:59,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:59,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:59,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:02:59,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-06 12:02:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:59,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:02:59,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:59,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:02:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:02:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:02:59,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:02:59,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:02:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:02:59,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:02:59,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322898606] [2021-07-06 12:02:59,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322898606] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:02:59,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:02:59,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-07-06 12:02:59,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175860695] [2021-07-06 12:02:59,175 INFO L425 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-06 12:02:59,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:02:59,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-06 12:02:59,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-07-06 12:02:59,176 INFO L87 Difference]: Start difference. First operand 757 states and 998 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:03:01,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:01,728 INFO L93 Difference]: Finished difference Result 776 states and 1018 transitions. [2021-07-06 12:03:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-06 12:03:01,729 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2021-07-06 12:03:01,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:01,730 INFO L225 Difference]: With dead ends: 776 [2021-07-06 12:03:01,730 INFO L226 Difference]: Without dead ends: 755 [2021-07-06 12:03:01,730 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 525.1ms TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-07-06 12:03:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-07-06 12:03:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2021-07-06 12:03:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 594 states have (on average 1.297979797979798) internal successors, (771), 608 states have internal predecessors, (771), 91 states have call successors, (91), 51 states have call predecessors, (91), 69 states have return successors, (132), 102 states have call predecessors, (132), 86 states have call successors, (132) [2021-07-06 12:03:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 994 transitions. [2021-07-06 12:03:01,740 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 994 transitions. Word has length 63 [2021-07-06 12:03:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:01,740 INFO L442 AbstractCegarLoop]: Abstraction has 755 states and 994 transitions. [2021-07-06 12:03:01,740 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:03:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 994 transitions. [2021-07-06 12:03:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-07-06 12:03:01,742 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:01,742 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:01,742 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-06 12:03:01,742 INFO L374 AbstractCegarLoop]: === Iteration 42 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:01,743 INFO L82 PathProgramCache]: Analyzing trace with hash -2006522547, now seen corresponding path program 1 times [2021-07-06 12:03:01,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:01,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219085108] [2021-07-06 12:03:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:01,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:01,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:01,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:01,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:01,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:01,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:01,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:01,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:01,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-06 12:03:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:01,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:01,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:01,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:01,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219085108] [2021-07-06 12:03:01,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219085108] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:01,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:01,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-06 12:03:01,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885726351] [2021-07-06 12:03:01,953 INFO L425 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-06 12:03:01,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-06 12:03:01,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-06 12:03:01,953 INFO L87 Difference]: Start difference. First operand 755 states and 994 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:03,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:03,174 INFO L93 Difference]: Finished difference Result 704 states and 907 transitions. [2021-07-06 12:03:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 12:03:03,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2021-07-06 12:03:03,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:03,176 INFO L225 Difference]: With dead ends: 704 [2021-07-06 12:03:03,176 INFO L226 Difference]: Without dead ends: 700 [2021-07-06 12:03:03,176 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 227.0ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-07-06 12:03:03,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-07-06 12:03:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 683. [2021-07-06 12:03:03,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 539 states have (on average 1.2912801484230056) internal successors, (696), 551 states have internal predecessors, (696), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (101), 91 states have call predecessors, (101), 76 states have call successors, (101) [2021-07-06 12:03:03,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 878 transitions. [2021-07-06 12:03:03,184 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 878 transitions. Word has length 63 [2021-07-06 12:03:03,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:03,185 INFO L442 AbstractCegarLoop]: Abstraction has 683 states and 878 transitions. [2021-07-06 12:03:03,185 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:03,185 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 878 transitions. [2021-07-06 12:03:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-07-06 12:03:03,186 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:03,187 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:03,187 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-06 12:03:03,187 INFO L374 AbstractCegarLoop]: === Iteration 43 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:03,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:03,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2050162991, now seen corresponding path program 1 times [2021-07-06 12:03:03,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:03,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655018134] [2021-07-06 12:03:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:03,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-07-06 12:03:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:03:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:03,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:03:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:03,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:03,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:03,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:03,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655018134] [2021-07-06 12:03:03,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655018134] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:03,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:03,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-06 12:03:03,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340340291] [2021-07-06 12:03:03,371 INFO L425 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-06 12:03:03,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-06 12:03:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-07-06 12:03:03,371 INFO L87 Difference]: Start difference. First operand 683 states and 878 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-07-06 12:03:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:04,296 INFO L93 Difference]: Finished difference Result 683 states and 876 transitions. [2021-07-06 12:03:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 12:03:04,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2021-07-06 12:03:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:04,298 INFO L225 Difference]: With dead ends: 683 [2021-07-06 12:03:04,298 INFO L226 Difference]: Without dead ends: 683 [2021-07-06 12:03:04,298 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-07-06 12:03:04,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-07-06 12:03:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2021-07-06 12:03:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 539 states have (on average 1.287569573283859) internal successors, (694), 551 states have internal predecessors, (694), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (101), 91 states have call predecessors, (101), 76 states have call successors, (101) [2021-07-06 12:03:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 876 transitions. [2021-07-06 12:03:04,305 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 876 transitions. Word has length 66 [2021-07-06 12:03:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:04,305 INFO L442 AbstractCegarLoop]: Abstraction has 683 states and 876 transitions. [2021-07-06 12:03:04,305 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-07-06 12:03:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 876 transitions. [2021-07-06 12:03:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-07-06 12:03:04,306 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:04,307 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:04,307 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-06 12:03:04,307 INFO L374 AbstractCegarLoop]: === Iteration 44 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:04,307 INFO L82 PathProgramCache]: Analyzing trace with hash 618276496, now seen corresponding path program 1 times [2021-07-06 12:03:04,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:04,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030816224] [2021-07-06 12:03:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:04,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:04,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:04,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:04,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:04,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:04,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:04,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:04,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:04,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:04,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:04,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:03:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:04,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:04,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:04,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:04,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030816224] [2021-07-06 12:03:04,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030816224] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:04,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:04,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:03:04,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653222664] [2021-07-06 12:03:04,547 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:03:04,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:04,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:03:04,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:04,548 INFO L87 Difference]: Start difference. First operand 683 states and 876 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:03:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:06,174 INFO L93 Difference]: Finished difference Result 707 states and 908 transitions. [2021-07-06 12:03:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-06 12:03:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-07-06 12:03:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:06,176 INFO L225 Difference]: With dead ends: 707 [2021-07-06 12:03:06,176 INFO L226 Difference]: Without dead ends: 707 [2021-07-06 12:03:06,176 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 429.0ms TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-07-06 12:03:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-07-06 12:03:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 689. [2021-07-06 12:03:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 544 states have (on average 1.286764705882353) internal successors, (700), 556 states have internal predecessors, (700), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (102), 92 states have call predecessors, (102), 77 states have call successors, (102) [2021-07-06 12:03:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 884 transitions. [2021-07-06 12:03:06,182 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 884 transitions. Word has length 65 [2021-07-06 12:03:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:06,182 INFO L442 AbstractCegarLoop]: Abstraction has 689 states and 884 transitions. [2021-07-06 12:03:06,182 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-07-06 12:03:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 884 transitions. [2021-07-06 12:03:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-07-06 12:03:06,183 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:06,184 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:06,184 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-06 12:03:06,184 INFO L374 AbstractCegarLoop]: === Iteration 45 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:06,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:06,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1141037193, now seen corresponding path program 1 times [2021-07-06 12:03:06,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:06,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927114848] [2021-07-06 12:03:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:06,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:06,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:06,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:06,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:06,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:06,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:06,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:06,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:06,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:06,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-07-06 12:03:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:06,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:06,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:06,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:06,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927114848] [2021-07-06 12:03:06,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927114848] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:06,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:06,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:03:06,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193096054] [2021-07-06 12:03:06,426 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:03:06,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:06,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:03:06,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:06,426 INFO L87 Difference]: Start difference. First operand 689 states and 884 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:07,902 INFO L93 Difference]: Finished difference Result 691 states and 884 transitions. [2021-07-06 12:03:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-06 12:03:07,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-07-06 12:03:07,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:07,904 INFO L225 Difference]: With dead ends: 691 [2021-07-06 12:03:07,904 INFO L226 Difference]: Without dead ends: 691 [2021-07-06 12:03:07,904 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 417.1ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-07-06 12:03:07,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-07-06 12:03:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2021-07-06 12:03:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 544 states have (on average 1.2830882352941178) internal successors, (698), 556 states have internal predecessors, (698), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (102), 92 states have call predecessors, (102), 77 states have call successors, (102) [2021-07-06 12:03:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 882 transitions. [2021-07-06 12:03:07,911 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 882 transitions. Word has length 66 [2021-07-06 12:03:07,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:07,912 INFO L442 AbstractCegarLoop]: Abstraction has 689 states and 882 transitions. [2021-07-06 12:03:07,912 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 882 transitions. [2021-07-06 12:03:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-07-06 12:03:07,913 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:07,913 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:07,914 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-06 12:03:07,914 INFO L374 AbstractCegarLoop]: === Iteration 46 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:07,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:07,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1842637067, now seen corresponding path program 1 times [2021-07-06 12:03:07,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:07,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419454856] [2021-07-06 12:03:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:07,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:07,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:07,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:07,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:07,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:07,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:07,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:07,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:07,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:08,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:08,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:08,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:08,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:08,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:08,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:08,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:08,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:08,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:08,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:08,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:08,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-07-06 12:03:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:08,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:08,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:08,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:08,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419454856] [2021-07-06 12:03:08,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419454856] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:08,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:08,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-06 12:03:08,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891555178] [2021-07-06 12:03:08,196 INFO L425 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-06 12:03:08,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:08,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-06 12:03:08,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-07-06 12:03:08,196 INFO L87 Difference]: Start difference. First operand 689 states and 882 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:10,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:10,271 INFO L93 Difference]: Finished difference Result 713 states and 909 transitions. [2021-07-06 12:03:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 12:03:10,271 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-07-06 12:03:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:10,273 INFO L225 Difference]: With dead ends: 713 [2021-07-06 12:03:10,273 INFO L226 Difference]: Without dead ends: 658 [2021-07-06 12:03:10,273 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 352.2ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-07-06 12:03:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-07-06 12:03:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 652. [2021-07-06 12:03:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 514 states have (on average 1.2684824902723735) internal successors, (652), 526 states have internal predecessors, (652), 75 states have call successors, (75), 47 states have call predecessors, (75), 62 states have return successors, (94), 85 states have call predecessors, (94), 70 states have call successors, (94) [2021-07-06 12:03:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 821 transitions. [2021-07-06 12:03:10,279 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 821 transitions. Word has length 66 [2021-07-06 12:03:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:10,279 INFO L442 AbstractCegarLoop]: Abstraction has 652 states and 821 transitions. [2021-07-06 12:03:10,279 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:10,279 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 821 transitions. [2021-07-06 12:03:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-07-06 12:03:10,280 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:10,280 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:10,280 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-06 12:03:10,280 INFO L374 AbstractCegarLoop]: === Iteration 47 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash -958641691, now seen corresponding path program 1 times [2021-07-06 12:03:10,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:10,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270586069] [2021-07-06 12:03:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:10,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:10,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:10,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:10,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:10,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:10,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:10,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:10,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:10,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-07-06 12:03:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:10,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:10,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:10,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:10,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:10,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270586069] [2021-07-06 12:03:10,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270586069] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:10,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:10,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:03:10,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15426524] [2021-07-06 12:03:10,519 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:03:10,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:10,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:03:10,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:10,520 INFO L87 Difference]: Start difference. First operand 652 states and 821 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:11,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:11,762 INFO L93 Difference]: Finished difference Result 652 states and 820 transitions. [2021-07-06 12:03:11,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:03:11,763 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2021-07-06 12:03:11,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:11,764 INFO L225 Difference]: With dead ends: 652 [2021-07-06 12:03:11,764 INFO L226 Difference]: Without dead ends: 647 [2021-07-06 12:03:11,764 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 357.4ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:03:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-07-06 12:03:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2021-07-06 12:03:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 510 states have (on average 1.268627450980392) internal successors, (647), 522 states have internal predecessors, (647), 74 states have call successors, (74), 47 states have call predecessors, (74), 62 states have return successors, (93), 84 states have call predecessors, (93), 69 states have call successors, (93) [2021-07-06 12:03:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 814 transitions. [2021-07-06 12:03:11,770 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 814 transitions. Word has length 67 [2021-07-06 12:03:11,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:11,771 INFO L442 AbstractCegarLoop]: Abstraction has 647 states and 814 transitions. [2021-07-06 12:03:11,771 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 814 transitions. [2021-07-06 12:03:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-07-06 12:03:11,772 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:11,772 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:11,772 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-06 12:03:11,772 INFO L374 AbstractCegarLoop]: === Iteration 48 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1812691366, now seen corresponding path program 1 times [2021-07-06 12:03:11,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:11,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865665452] [2021-07-06 12:03:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:11,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:11,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:11,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:11,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:11,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:11,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:11,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:11,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:11,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:11,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:11,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:11,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:11,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865665452] [2021-07-06 12:03:11,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865665452] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:11,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:11,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-06 12:03:11,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911157139] [2021-07-06 12:03:11,989 INFO L425 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-06 12:03:11,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-06 12:03:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-06 12:03:11,990 INFO L87 Difference]: Start difference. First operand 647 states and 814 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:03:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:13,211 INFO L93 Difference]: Finished difference Result 763 states and 956 transitions. [2021-07-06 12:03:13,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-06 12:03:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2021-07-06 12:03:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:13,213 INFO L225 Difference]: With dead ends: 763 [2021-07-06 12:03:13,213 INFO L226 Difference]: Without dead ends: 763 [2021-07-06 12:03:13,213 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 291.9ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:03:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-07-06 12:03:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 689. [2021-07-06 12:03:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 542 states have (on average 1.2619926199261993) internal successors, (684), 556 states have internal predecessors, (684), 76 states have call successors, (76), 49 states have call predecessors, (76), 70 states have return successors, (101), 92 states have call predecessors, (101), 71 states have call successors, (101) [2021-07-06 12:03:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 861 transitions. [2021-07-06 12:03:13,222 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 861 transitions. Word has length 67 [2021-07-06 12:03:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:13,222 INFO L442 AbstractCegarLoop]: Abstraction has 689 states and 861 transitions. [2021-07-06 12:03:13,223 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:03:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 861 transitions. [2021-07-06 12:03:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-07-06 12:03:13,224 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:13,224 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:13,224 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-06 12:03:13,224 INFO L374 AbstractCegarLoop]: === Iteration 49 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash 85012280, now seen corresponding path program 1 times [2021-07-06 12:03:13,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:13,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953880809] [2021-07-06 12:03:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:13,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:13,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:13,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:13,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:13,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:13,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:13,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:13,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:13,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:13,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:13,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:13,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:13,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:13,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:13,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:13,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:13,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:13,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:13,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:13,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953880809] [2021-07-06 12:03:13,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953880809] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:13,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:13,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:03:13,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916080817] [2021-07-06 12:03:13,472 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:03:13,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:13,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:03:13,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:13,472 INFO L87 Difference]: Start difference. First operand 689 states and 861 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:14,552 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2021-07-06 12:03:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:15,249 INFO L93 Difference]: Finished difference Result 761 states and 953 transitions. [2021-07-06 12:03:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-06 12:03:15,250 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2021-07-06 12:03:15,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:15,252 INFO L225 Difference]: With dead ends: 761 [2021-07-06 12:03:15,252 INFO L226 Difference]: Without dead ends: 761 [2021-07-06 12:03:15,252 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 545.9ms TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-07-06 12:03:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-07-06 12:03:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 689. [2021-07-06 12:03:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 542 states have (on average 1.2601476014760147) internal successors, (683), 556 states have internal predecessors, (683), 76 states have call successors, (76), 49 states have call predecessors, (76), 70 states have return successors, (101), 92 states have call predecessors, (101), 71 states have call successors, (101) [2021-07-06 12:03:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 860 transitions. [2021-07-06 12:03:15,259 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 860 transitions. Word has length 68 [2021-07-06 12:03:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:15,259 INFO L442 AbstractCegarLoop]: Abstraction has 689 states and 860 transitions. [2021-07-06 12:03:15,259 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 860 transitions. [2021-07-06 12:03:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-07-06 12:03:15,261 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:15,261 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:15,261 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-06 12:03:15,261 INFO L374 AbstractCegarLoop]: === Iteration 50 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:15,261 INFO L82 PathProgramCache]: Analyzing trace with hash 882393394, now seen corresponding path program 1 times [2021-07-06 12:03:15,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:15,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480038031] [2021-07-06 12:03:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:15,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:15,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:15,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:15,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:15,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:15,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:15,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-07-06 12:03:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:03:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:15,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:15,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:15,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:15,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:15,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:15,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480038031] [2021-07-06 12:03:15,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480038031] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:15,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:15,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-07-06 12:03:15,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269458344] [2021-07-06 12:03:15,674 INFO L425 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-06 12:03:15,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:15,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-06 12:03:15,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:03:15,676 INFO L87 Difference]: Start difference. First operand 689 states and 860 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-07-06 12:03:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:17,986 INFO L93 Difference]: Finished difference Result 719 states and 896 transitions. [2021-07-06 12:03:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-06 12:03:17,988 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2021-07-06 12:03:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:17,990 INFO L225 Difference]: With dead ends: 719 [2021-07-06 12:03:17,990 INFO L226 Difference]: Without dead ends: 698 [2021-07-06 12:03:17,990 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 527.3ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-07-06 12:03:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-07-06 12:03:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 687. [2021-07-06 12:03:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 541 states have (on average 1.2587800369685767) internal successors, (681), 555 states have internal predecessors, (681), 75 states have call successors, (75), 49 states have call predecessors, (75), 70 states have return successors, (100), 91 states have call predecessors, (100), 70 states have call successors, (100) [2021-07-06 12:03:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 856 transitions. [2021-07-06 12:03:17,999 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 856 transitions. Word has length 74 [2021-07-06 12:03:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:17,999 INFO L442 AbstractCegarLoop]: Abstraction has 687 states and 856 transitions. [2021-07-06 12:03:17,999 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-07-06 12:03:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 856 transitions. [2021-07-06 12:03:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-07-06 12:03:18,001 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:18,001 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:18,001 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-06 12:03:18,001 INFO L374 AbstractCegarLoop]: === Iteration 51 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1179932902, now seen corresponding path program 1 times [2021-07-06 12:03:18,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:18,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993963714] [2021-07-06 12:03:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:18,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:18,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:18,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:18,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:18,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:18,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:18,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:18,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-06 12:03:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-07-06 12:03:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:18,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:18,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:18,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:18,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:18,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:18,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993963714] [2021-07-06 12:03:18,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993963714] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:18,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:18,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-07-06 12:03:18,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188456250] [2021-07-06 12:03:18,466 INFO L425 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-06 12:03:18,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:18,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-06 12:03:18,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-07-06 12:03:18,467 INFO L87 Difference]: Start difference. First operand 687 states and 856 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-07-06 12:03:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:21,009 INFO L93 Difference]: Finished difference Result 708 states and 879 transitions. [2021-07-06 12:03:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-06 12:03:21,009 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2021-07-06 12:03:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:21,011 INFO L225 Difference]: With dead ends: 708 [2021-07-06 12:03:21,011 INFO L226 Difference]: Without dead ends: 684 [2021-07-06 12:03:21,011 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 748.3ms TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2021-07-06 12:03:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-07-06 12:03:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2021-07-06 12:03:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 539 states have (on average 1.2578849721706864) internal successors, (678), 553 states have internal predecessors, (678), 74 states have call successors, (74), 49 states have call predecessors, (74), 70 states have return successors, (99), 90 states have call predecessors, (99), 69 states have call successors, (99) [2021-07-06 12:03:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 851 transitions. [2021-07-06 12:03:21,016 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 851 transitions. Word has length 70 [2021-07-06 12:03:21,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:21,017 INFO L442 AbstractCegarLoop]: Abstraction has 684 states and 851 transitions. [2021-07-06 12:03:21,017 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-07-06 12:03:21,017 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 851 transitions. [2021-07-06 12:03:21,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-07-06 12:03:21,018 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:21,018 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:21,018 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-07-06 12:03:21,018 INFO L374 AbstractCegarLoop]: === Iteration 52 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:21,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:21,018 INFO L82 PathProgramCache]: Analyzing trace with hash -312001843, now seen corresponding path program 1 times [2021-07-06 12:03:21,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:21,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489245445] [2021-07-06 12:03:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:21,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:21,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,049 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-06 12:03:21,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:21,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:21,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:21,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:21,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:21,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:21,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-06 12:03:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:21,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:21,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:21,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:21,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:21,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:21,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489245445] [2021-07-06 12:03:21,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489245445] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:21,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:21,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-06 12:03:21,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697779630] [2021-07-06 12:03:21,410 INFO L425 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-06 12:03:21,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:21,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-06 12:03:21,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:03:21,411 INFO L87 Difference]: Start difference. First operand 684 states and 851 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:03:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:23,518 INFO L93 Difference]: Finished difference Result 701 states and 869 transitions. [2021-07-06 12:03:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 12:03:23,519 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2021-07-06 12:03:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:23,520 INFO L225 Difference]: With dead ends: 701 [2021-07-06 12:03:23,520 INFO L226 Difference]: Without dead ends: 682 [2021-07-06 12:03:23,520 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 330.3ms TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:03:23,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-07-06 12:03:23,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2021-07-06 12:03:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 538 states have (on average 1.2565055762081785) internal successors, (676), 552 states have internal predecessors, (676), 73 states have call successors, (73), 49 states have call predecessors, (73), 70 states have return successors, (98), 89 states have call predecessors, (98), 68 states have call successors, (98) [2021-07-06 12:03:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 847 transitions. [2021-07-06 12:03:23,528 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 847 transitions. Word has length 72 [2021-07-06 12:03:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:23,529 INFO L442 AbstractCegarLoop]: Abstraction has 682 states and 847 transitions. [2021-07-06 12:03:23,529 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:03:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 847 transitions. [2021-07-06 12:03:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-07-06 12:03:23,530 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:23,530 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:23,531 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-07-06 12:03:23,531 INFO L374 AbstractCegarLoop]: === Iteration 53 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:23,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:23,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2057360036, now seen corresponding path program 1 times [2021-07-06 12:03:23,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:23,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668231784] [2021-07-06 12:03:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:23,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:23,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,564 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-06 12:03:23,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:23,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:23,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:23,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:23,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:23,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:23,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-07-06 12:03:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:23,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:23,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:23,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:23,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:23,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:23,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668231784] [2021-07-06 12:03:23,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668231784] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:23,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:23,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-06 12:03:23,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239018868] [2021-07-06 12:03:23,938 INFO L425 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-06 12:03:23,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:23,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-06 12:03:23,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:03:23,939 INFO L87 Difference]: Start difference. First operand 682 states and 847 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:03:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:26,405 INFO L93 Difference]: Finished difference Result 696 states and 862 transitions. [2021-07-06 12:03:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 12:03:26,405 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2021-07-06 12:03:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:26,410 INFO L225 Difference]: With dead ends: 696 [2021-07-06 12:03:26,410 INFO L226 Difference]: Without dead ends: 670 [2021-07-06 12:03:26,410 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 329.8ms TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:03:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-07-06 12:03:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2021-07-06 12:03:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 529 states have (on average 1.2570888468809074) internal successors, (665), 543 states have internal predecessors, (665), 71 states have call successors, (71), 49 states have call predecessors, (71), 69 states have return successors, (95), 86 states have call predecessors, (95), 66 states have call successors, (95) [2021-07-06 12:03:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 831 transitions. [2021-07-06 12:03:26,419 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 831 transitions. Word has length 69 [2021-07-06 12:03:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:26,419 INFO L442 AbstractCegarLoop]: Abstraction has 670 states and 831 transitions. [2021-07-06 12:03:26,419 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:03:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 831 transitions. [2021-07-06 12:03:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-07-06 12:03:26,420 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:26,420 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:26,421 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-07-06 12:03:26,421 INFO L374 AbstractCegarLoop]: === Iteration 54 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:26,422 INFO L82 PathProgramCache]: Analyzing trace with hash -234085728, now seen corresponding path program 1 times [2021-07-06 12:03:26,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:26,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648720457] [2021-07-06 12:03:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:26,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:26,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:26,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:26,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:26,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:26,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:26,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:26,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:26,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-07-06 12:03:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:26,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:26,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:03:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:26,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:26,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:26,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:26,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648720457] [2021-07-06 12:03:26,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648720457] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:26,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:26,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:03:26,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280959198] [2021-07-06 12:03:26,690 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:03:26,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:26,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:03:26,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:26,691 INFO L87 Difference]: Start difference. First operand 670 states and 831 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:27,986 INFO L93 Difference]: Finished difference Result 670 states and 830 transitions. [2021-07-06 12:03:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:03:27,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2021-07-06 12:03:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:27,988 INFO L225 Difference]: With dead ends: 670 [2021-07-06 12:03:27,988 INFO L226 Difference]: Without dead ends: 665 [2021-07-06 12:03:27,988 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 392.6ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:03:27,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-07-06 12:03:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2021-07-06 12:03:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 525 states have (on average 1.2571428571428571) internal successors, (660), 539 states have internal predecessors, (660), 70 states have call successors, (70), 49 states have call predecessors, (70), 69 states have return successors, (94), 85 states have call predecessors, (94), 65 states have call successors, (94) [2021-07-06 12:03:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 824 transitions. [2021-07-06 12:03:27,994 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 824 transitions. Word has length 69 [2021-07-06 12:03:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:27,994 INFO L442 AbstractCegarLoop]: Abstraction has 665 states and 824 transitions. [2021-07-06 12:03:27,994 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 824 transitions. [2021-07-06 12:03:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-07-06 12:03:27,995 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:27,995 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:27,995 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-06 12:03:27,995 INFO L374 AbstractCegarLoop]: === Iteration 55 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash -354223509, now seen corresponding path program 1 times [2021-07-06 12:03:27,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:27,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846836477] [2021-07-06 12:03:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:27,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:28,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:28,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:28,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:28,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:28,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:28,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-07-06 12:03:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:28,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:03:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:28,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:28,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:28,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:28,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846836477] [2021-07-06 12:03:28,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846836477] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:28,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:28,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-06 12:03:28,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782877997] [2021-07-06 12:03:28,313 INFO L425 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-06 12:03:28,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-06 12:03:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-07-06 12:03:28,314 INFO L87 Difference]: Start difference. First operand 665 states and 824 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:30,327 INFO L93 Difference]: Finished difference Result 689 states and 851 transitions. [2021-07-06 12:03:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-06 12:03:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2021-07-06 12:03:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:30,329 INFO L225 Difference]: With dead ends: 689 [2021-07-06 12:03:30,329 INFO L226 Difference]: Without dead ends: 662 [2021-07-06 12:03:30,329 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 486.8ms TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2021-07-06 12:03:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-07-06 12:03:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2021-07-06 12:03:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 523 states have (on average 1.2562141491395793) internal successors, (657), 537 states have internal predecessors, (657), 69 states have call successors, (69), 49 states have call predecessors, (69), 69 states have return successors, (93), 84 states have call predecessors, (93), 64 states have call successors, (93) [2021-07-06 12:03:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 819 transitions. [2021-07-06 12:03:30,335 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 819 transitions. Word has length 69 [2021-07-06 12:03:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:30,336 INFO L442 AbstractCegarLoop]: Abstraction has 662 states and 819 transitions. [2021-07-06 12:03:30,336 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 819 transitions. [2021-07-06 12:03:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-07-06 12:03:30,337 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:30,337 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:30,337 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-06 12:03:30,337 INFO L374 AbstractCegarLoop]: === Iteration 56 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:30,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:30,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1995059229, now seen corresponding path program 1 times [2021-07-06 12:03:30,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:30,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939275293] [2021-07-06 12:03:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:30,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:30,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:30,366 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-06 12:03:30,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:30,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:30,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:30,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:30,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:30,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:30,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:30,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:30,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:30,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:30,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:30,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:30,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:30,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:30,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:30,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:30,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939275293] [2021-07-06 12:03:30,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939275293] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:30,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:30,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-06 12:03:30,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639302805] [2021-07-06 12:03:30,653 INFO L425 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-06 12:03:30,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-06 12:03:30,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-07-06 12:03:30,653 INFO L87 Difference]: Start difference. First operand 662 states and 819 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:03:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:32,752 INFO L93 Difference]: Finished difference Result 669 states and 825 transitions. [2021-07-06 12:03:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-06 12:03:32,753 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2021-07-06 12:03:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:32,754 INFO L225 Difference]: With dead ends: 669 [2021-07-06 12:03:32,754 INFO L226 Difference]: Without dead ends: 666 [2021-07-06 12:03:32,755 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 385.8ms TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2021-07-06 12:03:32,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-07-06 12:03:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 660. [2021-07-06 12:03:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 521 states have (on average 1.2533589251439539) internal successors, (653), 535 states have internal predecessors, (653), 69 states have call successors, (69), 49 states have call predecessors, (69), 69 states have return successors, (93), 84 states have call predecessors, (93), 64 states have call successors, (93) [2021-07-06 12:03:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 815 transitions. [2021-07-06 12:03:32,763 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 815 transitions. Word has length 69 [2021-07-06 12:03:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:32,763 INFO L442 AbstractCegarLoop]: Abstraction has 660 states and 815 transitions. [2021-07-06 12:03:32,763 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2021-07-06 12:03:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 815 transitions. [2021-07-06 12:03:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-07-06 12:03:32,765 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:32,765 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:32,765 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-07-06 12:03:32,765 INFO L374 AbstractCegarLoop]: === Iteration 57 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:32,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:32,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1994782399, now seen corresponding path program 1 times [2021-07-06 12:03:32,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:32,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887663379] [2021-07-06 12:03:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:32,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:32,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:32,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:32,792 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-07-06 12:03:32,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:03:32,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:32,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:32,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:32,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:32,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:32,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:32,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:32,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:32,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:32,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:33,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:33,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:33,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:33,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:33,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:33,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:33,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:33,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887663379] [2021-07-06 12:03:33,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887663379] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:33,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:33,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:03:33,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254814554] [2021-07-06 12:03:33,021 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:03:33,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:33,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:03:33,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:33,022 INFO L87 Difference]: Start difference. First operand 660 states and 815 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:34,034 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-07-06 12:03:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:34,876 INFO L93 Difference]: Finished difference Result 732 states and 906 transitions. [2021-07-06 12:03:34,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-06 12:03:34,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2021-07-06 12:03:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:34,877 INFO L225 Difference]: With dead ends: 732 [2021-07-06 12:03:34,877 INFO L226 Difference]: Without dead ends: 674 [2021-07-06 12:03:34,878 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 669.6ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-07-06 12:03:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-07-06 12:03:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 604. [2021-07-06 12:03:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 475 states have (on average 1.2463157894736843) internal successors, (592), 487 states have internal predecessors, (592), 67 states have call successors, (67), 47 states have call predecessors, (67), 61 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2021-07-06 12:03:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 744 transitions. [2021-07-06 12:03:34,885 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 744 transitions. Word has length 69 [2021-07-06 12:03:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:34,886 INFO L442 AbstractCegarLoop]: Abstraction has 604 states and 744 transitions. [2021-07-06 12:03:34,886 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 744 transitions. [2021-07-06 12:03:34,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-07-06 12:03:34,887 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:34,887 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:34,887 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-07-06 12:03:34,888 INFO L374 AbstractCegarLoop]: === Iteration 58 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:34,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1513184160, now seen corresponding path program 1 times [2021-07-06 12:03:34,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:34,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786929560] [2021-07-06 12:03:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:34,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:34,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:34,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:34,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:34,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:34,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:34,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:34,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:35,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:35,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:35,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:35,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:35,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:35,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-06 12:03:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:35,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:03:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:35,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:35,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:35,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:35,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:35,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786929560] [2021-07-06 12:03:35,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786929560] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:35,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:35,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 12:03:35,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643150034] [2021-07-06 12:03:35,137 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 12:03:35,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:35,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 12:03:35,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:03:35,138 INFO L87 Difference]: Start difference. First operand 604 states and 744 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:36,217 INFO L93 Difference]: Finished difference Result 608 states and 748 transitions. [2021-07-06 12:03:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-06 12:03:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-07-06 12:03:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:36,218 INFO L225 Difference]: With dead ends: 608 [2021-07-06 12:03:36,219 INFO L226 Difference]: Without dead ends: 608 [2021-07-06 12:03:36,219 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 397.2ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-07-06 12:03:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-07-06 12:03:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 604. [2021-07-06 12:03:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 475 states have (on average 1.2442105263157894) internal successors, (591), 487 states have internal predecessors, (591), 67 states have call successors, (67), 47 states have call predecessors, (67), 61 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2021-07-06 12:03:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 743 transitions. [2021-07-06 12:03:36,223 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 743 transitions. Word has length 71 [2021-07-06 12:03:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:36,224 INFO L442 AbstractCegarLoop]: Abstraction has 604 states and 743 transitions. [2021-07-06 12:03:36,224 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 743 transitions. [2021-07-06 12:03:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-07-06 12:03:36,224 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:36,225 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:36,225 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-07-06 12:03:36,225 INFO L374 AbstractCegarLoop]: === Iteration 59 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:36,225 INFO L82 PathProgramCache]: Analyzing trace with hash 537799838, now seen corresponding path program 1 times [2021-07-06 12:03:36,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:36,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998448404] [2021-07-06 12:03:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:36,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:36,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:36,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:36,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:36,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:36,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:36,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-06 12:03:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:03:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:36,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:36,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:36,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:36,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:36,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:36,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998448404] [2021-07-06 12:03:36,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998448404] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:36,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:36,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-07-06 12:03:36,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386753251] [2021-07-06 12:03:36,625 INFO L425 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-06 12:03:36,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-06 12:03:36,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:03:36,626 INFO L87 Difference]: Start difference. First operand 604 states and 743 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-07-06 12:03:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:38,587 INFO L93 Difference]: Finished difference Result 634 states and 779 transitions. [2021-07-06 12:03:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-06 12:03:38,588 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2021-07-06 12:03:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:38,589 INFO L225 Difference]: With dead ends: 634 [2021-07-06 12:03:38,589 INFO L226 Difference]: Without dead ends: 603 [2021-07-06 12:03:38,589 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 547.7ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-07-06 12:03:38,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-07-06 12:03:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 599. [2021-07-06 12:03:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 471 states have (on average 1.2399150743099787) internal successors, (584), 483 states have internal predecessors, (584), 66 states have call successors, (66), 47 states have call predecessors, (66), 61 states have return successors, (83), 75 states have call predecessors, (83), 61 states have call successors, (83) [2021-07-06 12:03:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 733 transitions. [2021-07-06 12:03:38,594 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 733 transitions. Word has length 71 [2021-07-06 12:03:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:38,594 INFO L442 AbstractCegarLoop]: Abstraction has 599 states and 733 transitions. [2021-07-06 12:03:38,594 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-07-06 12:03:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 733 transitions. [2021-07-06 12:03:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-07-06 12:03:38,595 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:38,595 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:38,595 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-07-06 12:03:38,595 INFO L374 AbstractCegarLoop]: === Iteration 60 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:38,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:38,595 INFO L82 PathProgramCache]: Analyzing trace with hash 494372097, now seen corresponding path program 1 times [2021-07-06 12:03:38,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:38,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155789285] [2021-07-06 12:03:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:38,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:38,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:38,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-06 12:03:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:38,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:03:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:38,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:38,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:38,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:38,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155789285] [2021-07-06 12:03:38,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155789285] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:38,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:38,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 12:03:38,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748152859] [2021-07-06 12:03:38,861 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 12:03:38,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:38,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 12:03:38,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:03:38,862 INFO L87 Difference]: Start difference. First operand 599 states and 733 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:40,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:40,213 INFO L93 Difference]: Finished difference Result 599 states and 732 transitions. [2021-07-06 12:03:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:03:40,214 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-07-06 12:03:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:40,214 INFO L225 Difference]: With dead ends: 599 [2021-07-06 12:03:40,214 INFO L226 Difference]: Without dead ends: 593 [2021-07-06 12:03:40,214 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 394.2ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-07-06 12:03:40,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-07-06 12:03:40,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-07-06 12:03:40,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 466 states have (on average 1.240343347639485) internal successors, (578), 478 states have internal predecessors, (578), 65 states have call successors, (65), 47 states have call predecessors, (65), 61 states have return successors, (82), 74 states have call predecessors, (82), 60 states have call successors, (82) [2021-07-06 12:03:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 725 transitions. [2021-07-06 12:03:40,219 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 725 transitions. Word has length 71 [2021-07-06 12:03:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:40,219 INFO L442 AbstractCegarLoop]: Abstraction has 593 states and 725 transitions. [2021-07-06 12:03:40,219 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 725 transitions. [2021-07-06 12:03:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-07-06 12:03:40,220 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:40,221 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:40,221 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-06 12:03:40,221 INFO L374 AbstractCegarLoop]: === Iteration 61 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:40,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:40,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1840886726, now seen corresponding path program 1 times [2021-07-06 12:03:40,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:40,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804770405] [2021-07-06 12:03:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:40,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:40,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:40,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:40,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:40,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:40,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:40,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:40,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-07-06 12:03:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:40,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:40,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:40,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:40,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:40,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:40,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:40,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804770405] [2021-07-06 12:03:40,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804770405] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:40,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:40,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-07-06 12:03:40,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196558501] [2021-07-06 12:03:40,594 INFO L425 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-06 12:03:40,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-06 12:03:40,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:03:40,595 INFO L87 Difference]: Start difference. First operand 593 states and 725 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-07-06 12:03:42,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:42,632 INFO L93 Difference]: Finished difference Result 614 states and 748 transitions. [2021-07-06 12:03:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-06 12:03:42,632 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2021-07-06 12:03:42,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:42,633 INFO L225 Difference]: With dead ends: 614 [2021-07-06 12:03:42,633 INFO L226 Difference]: Without dead ends: 591 [2021-07-06 12:03:42,634 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 515.2ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-07-06 12:03:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-07-06 12:03:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2021-07-06 12:03:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 464 states have (on average 1.2392241379310345) internal successors, (575), 476 states have internal predecessors, (575), 65 states have call successors, (65), 47 states have call predecessors, (65), 61 states have return successors, (82), 74 states have call predecessors, (82), 60 states have call successors, (82) [2021-07-06 12:03:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 722 transitions. [2021-07-06 12:03:42,638 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 722 transitions. Word has length 77 [2021-07-06 12:03:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:42,638 INFO L442 AbstractCegarLoop]: Abstraction has 591 states and 722 transitions. [2021-07-06 12:03:42,639 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-07-06 12:03:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 722 transitions. [2021-07-06 12:03:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-07-06 12:03:42,639 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:42,639 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:42,640 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-07-06 12:03:42,640 INFO L374 AbstractCegarLoop]: === Iteration 62 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:42,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1345380007, now seen corresponding path program 1 times [2021-07-06 12:03:42,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:42,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655160996] [2021-07-06 12:03:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:42,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:42,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:42,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-07-06 12:03:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:42,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:42,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:42,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:42,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655160996] [2021-07-06 12:03:42,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655160996] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:42,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:42,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 12:03:42,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100795082] [2021-07-06 12:03:42,882 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 12:03:42,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:42,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 12:03:42,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:03:42,883 INFO L87 Difference]: Start difference. First operand 591 states and 722 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-07-06 12:03:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:44,004 INFO L93 Difference]: Finished difference Result 583 states and 708 transitions. [2021-07-06 12:03:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:03:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2021-07-06 12:03:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:44,006 INFO L225 Difference]: With dead ends: 583 [2021-07-06 12:03:44,006 INFO L226 Difference]: Without dead ends: 575 [2021-07-06 12:03:44,006 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 367.8ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-07-06 12:03:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-07-06 12:03:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2021-07-06 12:03:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 451 states have (on average 1.2350332594235034) internal successors, (557), 463 states have internal predecessors, (557), 62 states have call successors, (62), 47 states have call predecessors, (62), 61 states have return successors, (78), 71 states have call predecessors, (78), 57 states have call successors, (78) [2021-07-06 12:03:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 697 transitions. [2021-07-06 12:03:44,012 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 697 transitions. Word has length 78 [2021-07-06 12:03:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:44,013 INFO L442 AbstractCegarLoop]: Abstraction has 575 states and 697 transitions. [2021-07-06 12:03:44,013 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-07-06 12:03:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 697 transitions. [2021-07-06 12:03:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-07-06 12:03:44,014 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:44,014 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:44,014 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-07-06 12:03:44,014 INFO L374 AbstractCegarLoop]: === Iteration 63 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:44,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:44,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2021942854, now seen corresponding path program 1 times [2021-07-06 12:03:44,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:44,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998619105] [2021-07-06 12:03:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:44,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:44,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:44,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-07-06 12:03:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:44,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:44,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:44,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:44,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:44,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998619105] [2021-07-06 12:03:44,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998619105] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:44,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:44,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 12:03:44,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036586077] [2021-07-06 12:03:44,250 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 12:03:44,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:44,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 12:03:44,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:03:44,251 INFO L87 Difference]: Start difference. First operand 575 states and 697 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:45,457 INFO L93 Difference]: Finished difference Result 574 states and 694 transitions. [2021-07-06 12:03:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:03:45,461 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2021-07-06 12:03:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:45,462 INFO L225 Difference]: With dead ends: 574 [2021-07-06 12:03:45,462 INFO L226 Difference]: Without dead ends: 562 [2021-07-06 12:03:45,462 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 369.3ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-07-06 12:03:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-07-06 12:03:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-07-06 12:03:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 439 states have (on average 1.2300683371298406) internal successors, (540), 451 states have internal predecessors, (540), 61 states have call successors, (61), 47 states have call predecessors, (61), 61 states have return successors, (77), 70 states have call predecessors, (77), 56 states have call successors, (77) [2021-07-06 12:03:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 678 transitions. [2021-07-06 12:03:45,468 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 678 transitions. Word has length 73 [2021-07-06 12:03:45,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:45,469 INFO L442 AbstractCegarLoop]: Abstraction has 562 states and 678 transitions. [2021-07-06 12:03:45,469 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 678 transitions. [2021-07-06 12:03:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-07-06 12:03:45,470 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:45,470 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:45,470 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-07-06 12:03:45,470 INFO L374 AbstractCegarLoop]: === Iteration 64 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:45,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1577876444, now seen corresponding path program 1 times [2021-07-06 12:03:45,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:45,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955713473] [2021-07-06 12:03:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:45,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 12:03:45,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:45,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:45,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:45,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:45,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-06 12:03:45,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:45,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-06 12:03:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:45,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:45,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:45,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:45,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955713473] [2021-07-06 12:03:45,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955713473] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:45,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:45,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-06 12:03:45,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178755021] [2021-07-06 12:03:45,826 INFO L425 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-06 12:03:45,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:45,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-06 12:03:45,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:03:45,827 INFO L87 Difference]: Start difference. First operand 562 states and 678 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-07-06 12:03:47,991 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 110 [2021-07-06 12:03:48,160 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2021-07-06 12:03:49,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:49,879 INFO L93 Difference]: Finished difference Result 1093 states and 1319 transitions. [2021-07-06 12:03:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-06 12:03:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2021-07-06 12:03:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:49,881 INFO L225 Difference]: With dead ends: 1093 [2021-07-06 12:03:49,881 INFO L226 Difference]: Without dead ends: 1063 [2021-07-06 12:03:49,881 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 1730.1ms TimeCoverageRelationStatistics Valid=614, Invalid=2356, Unknown=0, NotChecked=0, Total=2970 [2021-07-06 12:03:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-07-06 12:03:49,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 870. [2021-07-06 12:03:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 685 states have (on average 1.254014598540146) internal successors, (859), 703 states have internal predecessors, (859), 91 states have call successors, (91), 74 states have call predecessors, (91), 93 states have return successors, (119), 99 states have call predecessors, (119), 86 states have call successors, (119) [2021-07-06 12:03:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1069 transitions. [2021-07-06 12:03:49,889 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1069 transitions. Word has length 73 [2021-07-06 12:03:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:49,889 INFO L442 AbstractCegarLoop]: Abstraction has 870 states and 1069 transitions. [2021-07-06 12:03:49,889 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-07-06 12:03:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1069 transitions. [2021-07-06 12:03:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-07-06 12:03:49,890 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:49,890 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:49,890 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-07-06 12:03:49,890 INFO L374 AbstractCegarLoop]: === Iteration 65 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2037818598, now seen corresponding path program 1 times [2021-07-06 12:03:49,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:49,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818363725] [2021-07-06 12:03:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:49,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:49,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:49,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:49,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:49,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:49,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:49,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:49,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:49,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:49,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:50,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:50,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:50,074 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-07-06 12:03:50,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:50,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:03:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:50,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:50,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:03:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:50,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:50,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:50,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:50,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-06 12:03:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:50,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:50,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:50,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:50,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818363725] [2021-07-06 12:03:50,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818363725] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:50,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:50,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-06 12:03:50,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055685822] [2021-07-06 12:03:50,175 INFO L425 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-06 12:03:50,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:50,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-06 12:03:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-07-06 12:03:50,175 INFO L87 Difference]: Start difference. First operand 870 states and 1069 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-07-06 12:03:50,398 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-07-06 12:03:52,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:52,258 INFO L93 Difference]: Finished difference Result 1006 states and 1217 transitions. [2021-07-06 12:03:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-06 12:03:52,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2021-07-06 12:03:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:52,260 INFO L225 Difference]: With dead ends: 1006 [2021-07-06 12:03:52,260 INFO L226 Difference]: Without dead ends: 1006 [2021-07-06 12:03:52,260 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 598.3ms TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2021-07-06 12:03:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-07-06 12:03:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 947. [2021-07-06 12:03:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 744 states have (on average 1.239247311827957) internal successors, (922), 758 states have internal predecessors, (922), 103 states have call successors, (103), 78 states have call predecessors, (103), 99 states have return successors, (132), 115 states have call predecessors, (132), 98 states have call successors, (132) [2021-07-06 12:03:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1157 transitions. [2021-07-06 12:03:52,269 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1157 transitions. Word has length 73 [2021-07-06 12:03:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:52,269 INFO L442 AbstractCegarLoop]: Abstraction has 947 states and 1157 transitions. [2021-07-06 12:03:52,269 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-07-06 12:03:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1157 transitions. [2021-07-06 12:03:52,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-06 12:03:52,270 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:52,270 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:52,270 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-07-06 12:03:52,270 INFO L374 AbstractCegarLoop]: === Iteration 66 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:52,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1309062525, now seen corresponding path program 1 times [2021-07-06 12:03:52,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:52,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492659037] [2021-07-06 12:03:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:52,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:52,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:52,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:52,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:52,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:03:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-07-06 12:03:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:03:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:52,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:52,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:52,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:52,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492659037] [2021-07-06 12:03:52,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492659037] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:52,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:52,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-06 12:03:52,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624345597] [2021-07-06 12:03:52,540 INFO L425 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-06 12:03:52,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:52,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-06 12:03:52,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:03:52,540 INFO L87 Difference]: Start difference. First operand 947 states and 1157 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-07-06 12:03:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:53,621 INFO L93 Difference]: Finished difference Result 921 states and 1123 transitions. [2021-07-06 12:03:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:03:53,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2021-07-06 12:03:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:53,623 INFO L225 Difference]: With dead ends: 921 [2021-07-06 12:03:53,623 INFO L226 Difference]: Without dead ends: 899 [2021-07-06 12:03:53,623 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 415.5ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:03:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-07-06 12:03:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-07-06 12:03:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 710 states have (on average 1.2422535211267605) internal successors, (882), 724 states have internal predecessors, (882), 93 states have call successors, (93), 74 states have call predecessors, (93), 95 states have return successors, (120), 105 states have call predecessors, (120), 88 states have call successors, (120) [2021-07-06 12:03:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1095 transitions. [2021-07-06 12:03:53,632 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1095 transitions. Word has length 75 [2021-07-06 12:03:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:53,632 INFO L442 AbstractCegarLoop]: Abstraction has 899 states and 1095 transitions. [2021-07-06 12:03:53,632 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-07-06 12:03:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1095 transitions. [2021-07-06 12:03:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-07-06 12:03:53,634 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:53,634 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:53,634 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-07-06 12:03:53,634 INFO L374 AbstractCegarLoop]: === Iteration 67 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:53,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:53,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1946908899, now seen corresponding path program 1 times [2021-07-06 12:03:53,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:53,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050232468] [2021-07-06 12:03:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:53,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:53,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:53,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:53,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:53,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:53,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:53,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:53,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:53,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-07-06 12:03:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:53,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-07-06 12:03:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:53,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:53,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:53,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:53,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050232468] [2021-07-06 12:03:53,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050232468] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:53,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:53,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:03:53,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066054275] [2021-07-06 12:03:53,895 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:03:53,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:53,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:03:53,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:53,896 INFO L87 Difference]: Start difference. First operand 899 states and 1095 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:54,796 INFO L93 Difference]: Finished difference Result 895 states and 1087 transitions. [2021-07-06 12:03:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:03:54,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2021-07-06 12:03:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:54,798 INFO L225 Difference]: With dead ends: 895 [2021-07-06 12:03:54,798 INFO L226 Difference]: Without dead ends: 883 [2021-07-06 12:03:54,798 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 384.0ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:03:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-07-06 12:03:54,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-07-06 12:03:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 696 states have (on average 1.2413793103448276) internal successors, (864), 710 states have internal predecessors, (864), 91 states have call successors, (91), 74 states have call predecessors, (91), 95 states have return successors, (116), 103 states have call predecessors, (116), 86 states have call successors, (116) [2021-07-06 12:03:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1071 transitions. [2021-07-06 12:03:54,805 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1071 transitions. Word has length 73 [2021-07-06 12:03:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:54,805 INFO L442 AbstractCegarLoop]: Abstraction has 883 states and 1071 transitions. [2021-07-06 12:03:54,805 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-07-06 12:03:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1071 transitions. [2021-07-06 12:03:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-07-06 12:03:54,807 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:54,807 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:54,807 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-07-06 12:03:54,808 INFO L374 AbstractCegarLoop]: === Iteration 68 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1792063483, now seen corresponding path program 1 times [2021-07-06 12:03:54,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:54,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892530198] [2021-07-06 12:03:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:54,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:54,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:54,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:54,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:54,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:54,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:54,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:54,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:54,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:54,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:54,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:54,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-07-06 12:03:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:54,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:54,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:54,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:54,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:03:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:55,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:55,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:55,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:55,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 12:03:55,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 12:03:55,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 89.7 percent of original size [2021-07-06 12:03:55,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-07-06 12:03:55,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:55,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:55,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 12:03:55,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:03:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:55,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-07-06 12:03:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:55,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:55,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:55,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:55,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892530198] [2021-07-06 12:03:55,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892530198] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:55,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:55,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-06 12:03:55,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656526112] [2021-07-06 12:03:55,146 INFO L425 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-06 12:03:55,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:55,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-06 12:03:55,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-07-06 12:03:55,147 INFO L87 Difference]: Start difference. First operand 883 states and 1071 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-07-06 12:03:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:56,024 INFO L93 Difference]: Finished difference Result 869 states and 1049 transitions. [2021-07-06 12:03:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-06 12:03:56,024 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2021-07-06 12:03:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:56,026 INFO L225 Difference]: With dead ends: 869 [2021-07-06 12:03:56,026 INFO L226 Difference]: Without dead ends: 869 [2021-07-06 12:03:56,026 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 297.1ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-07-06 12:03:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-07-06 12:03:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2021-07-06 12:03:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 682 states have (on average 1.2346041055718475) internal successors, (842), 696 states have internal predecessors, (842), 91 states have call successors, (91), 74 states have call predecessors, (91), 95 states have return successors, (116), 103 states have call predecessors, (116), 86 states have call successors, (116) [2021-07-06 12:03:56,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1049 transitions. [2021-07-06 12:03:56,033 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1049 transitions. Word has length 77 [2021-07-06 12:03:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:56,033 INFO L442 AbstractCegarLoop]: Abstraction has 869 states and 1049 transitions. [2021-07-06 12:03:56,034 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-07-06 12:03:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1049 transitions. [2021-07-06 12:03:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-06 12:03:56,035 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:56,035 INFO L525 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:56,036 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-07-06 12:03:56,036 INFO L374 AbstractCegarLoop]: === Iteration 69 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:56,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:56,036 INFO L82 PathProgramCache]: Analyzing trace with hash -928649569, now seen corresponding path program 1 times [2021-07-06 12:03:56,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:56,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983550802] [2021-07-06 12:03:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:56,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:56,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:56,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-07-06 12:03:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-07-06 12:03:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:56,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:56,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-06 12:03:56,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:56,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983550802] [2021-07-06 12:03:56,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983550802] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:56,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:56,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:03:56,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847335930] [2021-07-06 12:03:56,291 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:03:56,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:56,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:03:56,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:56,291 INFO L87 Difference]: Start difference. First operand 869 states and 1049 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:57,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:57,151 INFO L93 Difference]: Finished difference Result 869 states and 1047 transitions. [2021-07-06 12:03:57,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-06 12:03:57,151 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2021-07-06 12:03:57,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:57,153 INFO L225 Difference]: With dead ends: 869 [2021-07-06 12:03:57,153 INFO L226 Difference]: Without dead ends: 849 [2021-07-06 12:03:57,153 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 374.9ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-07-06 12:03:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-07-06 12:03:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-07-06 12:03:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 666 states have (on average 1.2342342342342343) internal successors, (822), 680 states have internal predecessors, (822), 87 states have call successors, (87), 74 states have call predecessors, (87), 95 states have return successors, (112), 99 states have call predecessors, (112), 82 states have call successors, (112) [2021-07-06 12:03:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1021 transitions. [2021-07-06 12:03:57,166 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1021 transitions. Word has length 75 [2021-07-06 12:03:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:57,166 INFO L442 AbstractCegarLoop]: Abstraction has 849 states and 1021 transitions. [2021-07-06 12:03:57,166 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1021 transitions. [2021-07-06 12:03:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-07-06 12:03:57,168 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:57,168 INFO L525 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:57,168 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-07-06 12:03:57,168 INFO L374 AbstractCegarLoop]: === Iteration 70 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:57,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:57,169 INFO L82 PathProgramCache]: Analyzing trace with hash -305187537, now seen corresponding path program 1 times [2021-07-06 12:03:57,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:57,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436649667] [2021-07-06 12:03:57,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:57,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:03:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-07-06 12:03:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-07-06 12:03:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-07-06 12:03:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-06 12:03:57,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:57,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436649667] [2021-07-06 12:03:57,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436649667] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-06 12:03:57,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597430012] [2021-07-06 12:03:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:57,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-06 12:03:57,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 12:03:57,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-07-06 12:03:57,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-06 12:03:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:57,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 12:03:57,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 12:03:57,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 12:03:57,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:57,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 12:03:57,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 12:03:57,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:57,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 12:03:57,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 12:03:57,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:57,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 12:03:57,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 12:03:57,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:57,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 12:03:57,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:03:57,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 10.0 percent of original size [2021-07-06 12:03:57,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:57,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:57,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:58,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597430012] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:58,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-06 12:03:58,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2021-07-06 12:03:58,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168171319] [2021-07-06 12:03:58,045 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 12:03:58,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:58,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 12:03:58,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:58,046 INFO L87 Difference]: Start difference. First operand 849 states and 1021 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:58,057 INFO L93 Difference]: Finished difference Result 816 states and 981 transitions. [2021-07-06 12:03:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 12:03:58,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2021-07-06 12:03:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:58,067 INFO L225 Difference]: With dead ends: 816 [2021-07-06 12:03:58,067 INFO L226 Difference]: Without dead ends: 788 [2021-07-06 12:03:58,067 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 176.1ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:03:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-07-06 12:03:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2021-07-06 12:03:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 620 states have (on average 1.2419354838709677) internal successors, (770), 631 states have internal predecessors, (770), 81 states have call successors, (81), 71 states have call predecessors, (81), 86 states have return successors, (100), 90 states have call predecessors, (100), 76 states have call successors, (100) [2021-07-06 12:03:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 951 transitions. [2021-07-06 12:03:58,089 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 951 transitions. Word has length 77 [2021-07-06 12:03:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:58,089 INFO L442 AbstractCegarLoop]: Abstraction has 788 states and 951 transitions. [2021-07-06 12:03:58,089 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-07-06 12:03:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 951 transitions. [2021-07-06 12:03:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-07-06 12:03:58,093 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:58,093 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:58,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-06 12:03:58,307 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-06 12:03:58,307 INFO L374 AbstractCegarLoop]: === Iteration 71 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:58,307 INFO L82 PathProgramCache]: Analyzing trace with hash 921389410, now seen corresponding path program 1 times [2021-07-06 12:03:58,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:58,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517519683] [2021-07-06 12:03:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:58,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:58,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 12:03:58,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-07-06 12:03:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,508 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-07-06 12:03:58,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:03:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:58,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:03:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:03:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:03:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-07-06 12:03:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:58,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:58,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:03:58,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:03:58,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517519683] [2021-07-06 12:03:58,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517519683] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:03:58,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:03:58,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-06 12:03:58,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162631073] [2021-07-06 12:03:58,613 INFO L425 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-06 12:03:58,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:03:58,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-06 12:03:58,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-07-06 12:03:58,613 INFO L87 Difference]: Start difference. First operand 788 states and 951 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2021-07-06 12:03:58,763 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-07-06 12:03:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:03:59,769 INFO L93 Difference]: Finished difference Result 788 states and 949 transitions. [2021-07-06 12:03:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-06 12:03:59,770 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2021-07-06 12:03:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:03:59,776 INFO L225 Difference]: With dead ends: 788 [2021-07-06 12:03:59,776 INFO L226 Difference]: Without dead ends: 788 [2021-07-06 12:03:59,776 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 497.1ms TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2021-07-06 12:03:59,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-07-06 12:03:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2021-07-06 12:03:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 620 states have (on average 1.238709677419355) internal successors, (768), 631 states have internal predecessors, (768), 81 states have call successors, (81), 71 states have call predecessors, (81), 86 states have return successors, (100), 90 states have call predecessors, (100), 76 states have call successors, (100) [2021-07-06 12:03:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 949 transitions. [2021-07-06 12:03:59,792 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 949 transitions. Word has length 81 [2021-07-06 12:03:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:03:59,792 INFO L442 AbstractCegarLoop]: Abstraction has 788 states and 949 transitions. [2021-07-06 12:03:59,792 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2021-07-06 12:03:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 949 transitions. [2021-07-06 12:03:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-07-06 12:03:59,794 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:03:59,795 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:03:59,795 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-07-06 12:03:59,795 INFO L374 AbstractCegarLoop]: === Iteration 72 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:03:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:03:59,796 INFO L82 PathProgramCache]: Analyzing trace with hash -2106930851, now seen corresponding path program 1 times [2021-07-06 12:03:59,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:03:59,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257052369] [2021-07-06 12:03:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:03:59,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:03:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:59,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:59,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:59,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:59,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:03:59,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:59,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:03:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:59,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:59,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:03:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:59,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:59,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:03:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:59,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:59,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:03:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:03:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:03:59,980 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-07-06 12:03:59,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:03:59,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:03:59,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:04:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:04:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:00,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:00,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 12:04:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:00,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:00,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:00,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 12:04:00,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-06 12:04:00,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:04:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:00,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:00,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:00,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:00,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:04:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:00,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:04:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:00,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:00,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:04:00,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:00,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257052369] [2021-07-06 12:04:00,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257052369] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:00,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:00,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-06 12:04:00,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817426495] [2021-07-06 12:04:00,157 INFO L425 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-06 12:04:00,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:00,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-06 12:04:00,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-07-06 12:04:00,158 INFO L87 Difference]: Start difference. First operand 788 states and 949 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-07-06 12:04:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:02,379 INFO L93 Difference]: Finished difference Result 740 states and 886 transitions. [2021-07-06 12:04:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-06 12:04:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 78 [2021-07-06 12:04:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:02,382 INFO L225 Difference]: With dead ends: 740 [2021-07-06 12:04:02,382 INFO L226 Difference]: Without dead ends: 700 [2021-07-06 12:04:02,382 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 758.0ms TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2021-07-06 12:04:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-07-06 12:04:02,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 359. [2021-07-06 12:04:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 282 states have (on average 1.2375886524822695) internal successors, (349), 286 states have internal predecessors, (349), 39 states have call successors, (39), 35 states have call predecessors, (39), 37 states have return successors, (43), 39 states have call predecessors, (43), 35 states have call successors, (43) [2021-07-06 12:04:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 431 transitions. [2021-07-06 12:04:02,389 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 431 transitions. Word has length 78 [2021-07-06 12:04:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:02,389 INFO L442 AbstractCegarLoop]: Abstraction has 359 states and 431 transitions. [2021-07-06 12:04:02,390 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-07-06 12:04:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 431 transitions. [2021-07-06 12:04:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-07-06 12:04:02,391 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:04:02,391 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:04:02,392 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-07-06 12:04:02,392 INFO L374 AbstractCegarLoop]: === Iteration 73 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:04:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:04:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash -776628007, now seen corresponding path program 1 times [2021-07-06 12:04:02,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:04:02,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78176851] [2021-07-06 12:04:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:04:02,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:04:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:04:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:04:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:04:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-07-06 12:04:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:04:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-06 12:04:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-07-06 12:04:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-07-06 12:04:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:02,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:02,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:02,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:04:02,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:02,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78176851] [2021-07-06 12:04:02,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78176851] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:02,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:02,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-07-06 12:04:02,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933548261] [2021-07-06 12:04:02,783 INFO L425 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-06 12:04:02,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:02,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-06 12:04:02,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-07-06 12:04:02,784 INFO L87 Difference]: Start difference. First operand 359 states and 431 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2021-07-06 12:04:03,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:03,853 INFO L93 Difference]: Finished difference Result 358 states and 429 transitions. [2021-07-06 12:04:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-06 12:04:03,854 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2021-07-06 12:04:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:03,855 INFO L225 Difference]: With dead ends: 358 [2021-07-06 12:04:03,855 INFO L226 Difference]: Without dead ends: 282 [2021-07-06 12:04:03,855 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 314.7ms TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-07-06 12:04:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-07-06 12:04:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-07-06 12:04:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 219 states have (on average 1.2557077625570776) internal successors, (275), 221 states have internal predecessors, (275), 31 states have call successors, (31), 29 states have call predecessors, (31), 31 states have return successors, (36), 32 states have call predecessors, (36), 28 states have call successors, (36) [2021-07-06 12:04:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 342 transitions. [2021-07-06 12:04:03,859 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 342 transitions. Word has length 79 [2021-07-06 12:04:03,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:03,860 INFO L442 AbstractCegarLoop]: Abstraction has 282 states and 342 transitions. [2021-07-06 12:04:03,860 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2021-07-06 12:04:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 342 transitions. [2021-07-06 12:04:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-07-06 12:04:03,861 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:04:03,861 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:04:03,861 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-07-06 12:04:03,861 INFO L374 AbstractCegarLoop]: === Iteration 74 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:04:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:04:03,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1801601469, now seen corresponding path program 1 times [2021-07-06 12:04:03,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:04:03,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063992629] [2021-07-06 12:04:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:04:03,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:04:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:03,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:03,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:03,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:03,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:03,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:04:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:03,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:03,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:04:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:03,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:03,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:04:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-07-06 12:04:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:04,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:04:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-06 12:04:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:04,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:04:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:04:04,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:04,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063992629] [2021-07-06 12:04:04,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063992629] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:04,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:04,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:04:04,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275478374] [2021-07-06 12:04:04,116 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:04:04,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:04,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:04:04,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:04:04,117 INFO L87 Difference]: Start difference. First operand 282 states and 342 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-07-06 12:04:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:04,696 INFO L93 Difference]: Finished difference Result 279 states and 321 transitions. [2021-07-06 12:04:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-06 12:04:04,696 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2021-07-06 12:04:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:04,697 INFO L225 Difference]: With dead ends: 279 [2021-07-06 12:04:04,697 INFO L226 Difference]: Without dead ends: 279 [2021-07-06 12:04:04,697 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 383.8ms TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:04:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-07-06 12:04:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 235. [2021-07-06 12:04:04,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 180 states have (on average 1.1722222222222223) internal successors, (211), 183 states have internal predecessors, (211), 28 states have call successors, (28), 26 states have call predecessors, (28), 26 states have return successors, (28), 26 states have call predecessors, (28), 26 states have call successors, (28) [2021-07-06 12:04:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2021-07-06 12:04:04,700 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 83 [2021-07-06 12:04:04,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:04,700 INFO L442 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2021-07-06 12:04:04,700 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-07-06 12:04:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2021-07-06 12:04:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-07-06 12:04:04,701 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:04:04,701 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:04:04,701 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-07-06 12:04:04,702 INFO L374 AbstractCegarLoop]: === Iteration 75 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:04:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:04:04,702 INFO L82 PathProgramCache]: Analyzing trace with hash 709862044, now seen corresponding path program 1 times [2021-07-06 12:04:04,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:04:04,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378281983] [2021-07-06 12:04:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:04:04,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:04:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,728 INFO L142 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size [2021-07-06 12:04:04,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:04:04,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:04:04,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:04:04,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:04:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:04:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:04:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:04:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:04:04,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:04:04,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:04:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:04:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:04,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:04:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:04,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:04,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:05,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:05,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:05,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:04:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:05,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-06 12:04:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:05,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-07-06 12:04:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:05,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:04:05,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:05,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378281983] [2021-07-06 12:04:05,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378281983] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:05,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:05,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-06 12:04:05,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861591439] [2021-07-06 12:04:05,079 INFO L425 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-06 12:04:05,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:05,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-06 12:04:05,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-07-06 12:04:05,079 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2021-07-06 12:04:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:05,927 INFO L93 Difference]: Finished difference Result 284 states and 319 transitions. [2021-07-06 12:04:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 12:04:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2021-07-06 12:04:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:05,928 INFO L225 Difference]: With dead ends: 284 [2021-07-06 12:04:05,928 INFO L226 Difference]: Without dead ends: 255 [2021-07-06 12:04:05,928 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 529.2ms TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2021-07-06 12:04:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-07-06 12:04:05,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 234. [2021-07-06 12:04:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 179 states have (on average 1.1564245810055866) internal successors, (207), 182 states have internal predecessors, (207), 28 states have call successors, (28), 26 states have call predecessors, (28), 26 states have return successors, (28), 26 states have call predecessors, (28), 26 states have call successors, (28) [2021-07-06 12:04:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 263 transitions. [2021-07-06 12:04:05,931 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 263 transitions. Word has length 99 [2021-07-06 12:04:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:05,931 INFO L442 AbstractCegarLoop]: Abstraction has 234 states and 263 transitions. [2021-07-06 12:04:05,931 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2021-07-06 12:04:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 263 transitions. [2021-07-06 12:04:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-07-06 12:04:05,931 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:04:05,931 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:04:05,931 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-07-06 12:04:05,931 INFO L374 AbstractCegarLoop]: === Iteration 76 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:04:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:04:05,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2082222504, now seen corresponding path program 1 times [2021-07-06 12:04:05,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:04:05,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330144590] [2021-07-06 12:04:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:04:05,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:04:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:05,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:05,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:04:05,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:05,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:04:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:04:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:04:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:04:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:06,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:04:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:06,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:06,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:06,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:06,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:04:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-06 12:04:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-07-06 12:04:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:06,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:06,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:04:06,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:06,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330144590] [2021-07-06 12:04:06,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330144590] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:06,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:06,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-06 12:04:06,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721050815] [2021-07-06 12:04:06,261 INFO L425 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-06 12:04:06,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:06,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-06 12:04:06,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:04:06,262 INFO L87 Difference]: Start difference. First operand 234 states and 263 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-07-06 12:04:06,407 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2021-07-06 12:04:07,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:07,751 INFO L93 Difference]: Finished difference Result 454 states and 506 transitions. [2021-07-06 12:04:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-06 12:04:07,752 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 101 [2021-07-06 12:04:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:07,753 INFO L225 Difference]: With dead ends: 454 [2021-07-06 12:04:07,753 INFO L226 Difference]: Without dead ends: 399 [2021-07-06 12:04:07,753 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 690.0ms TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2021-07-06 12:04:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-07-06 12:04:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 349. [2021-07-06 12:04:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 269 states have (on average 1.1486988847583643) internal successors, (309), 274 states have internal predecessors, (309), 40 states have call successors, (40), 38 states have call predecessors, (40), 39 states have return successors, (41), 37 states have call predecessors, (41), 38 states have call successors, (41) [2021-07-06 12:04:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 390 transitions. [2021-07-06 12:04:07,758 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 390 transitions. Word has length 101 [2021-07-06 12:04:07,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:07,758 INFO L442 AbstractCegarLoop]: Abstraction has 349 states and 390 transitions. [2021-07-06 12:04:07,758 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-07-06 12:04:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 390 transitions. [2021-07-06 12:04:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-07-06 12:04:07,759 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:04:07,759 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:04:07,759 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-07-06 12:04:07,760 INFO L374 AbstractCegarLoop]: === Iteration 77 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:04:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:04:07,760 INFO L82 PathProgramCache]: Analyzing trace with hash -205159274, now seen corresponding path program 1 times [2021-07-06 12:04:07,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:04:07,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011705618] [2021-07-06 12:04:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:04:07,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:04:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:07,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:07,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:07,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:07,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:07,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:04:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:07,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:07,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:04:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:07,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:04:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:07,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:04:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:07,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:07,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:07,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:07,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:07,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:07,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-06 12:04:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:04:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-06 12:04:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-07-06 12:04:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 12:04:08,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:08,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011705618] [2021-07-06 12:04:08,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011705618] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:08,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:08,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-06 12:04:08,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704213316] [2021-07-06 12:04:08,091 INFO L425 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-06 12:04:08,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-06 12:04:08,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-07-06 12:04:08,092 INFO L87 Difference]: Start difference. First operand 349 states and 390 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-07-06 12:04:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:08,634 INFO L93 Difference]: Finished difference Result 364 states and 406 transitions. [2021-07-06 12:04:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-06 12:04:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2021-07-06 12:04:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:08,636 INFO L225 Difference]: With dead ends: 364 [2021-07-06 12:04:08,636 INFO L226 Difference]: Without dead ends: 261 [2021-07-06 12:04:08,636 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 267.7ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-07-06 12:04:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-07-06 12:04:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 146. [2021-07-06 12:04:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 112 states have (on average 1.125) internal successors, (126), 114 states have internal predecessors, (126), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-07-06 12:04:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 159 transitions. [2021-07-06 12:04:08,638 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 159 transitions. Word has length 101 [2021-07-06 12:04:08,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:08,638 INFO L442 AbstractCegarLoop]: Abstraction has 146 states and 159 transitions. [2021-07-06 12:04:08,638 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-07-06 12:04:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 159 transitions. [2021-07-06 12:04:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-07-06 12:04:08,638 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:04:08,638 INFO L525 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:04:08,638 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-07-06 12:04:08,638 INFO L374 AbstractCegarLoop]: === Iteration 78 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:04:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:04:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1200031739, now seen corresponding path program 1 times [2021-07-06 12:04:08,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:04:08,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050317949] [2021-07-06 12:04:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:04:08,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:04:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:04:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:04:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:04:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:04:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 12:04:08,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-07-06 12:04:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:04:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-06 12:04:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-07-06 12:04:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-07-06 12:04:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:08,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:08,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-07-06 12:04:08,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:08,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050317949] [2021-07-06 12:04:08,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050317949] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:08,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:08,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-06 12:04:08,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492586601] [2021-07-06 12:04:08,906 INFO L425 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-06 12:04:08,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:08,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-06 12:04:08,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-07-06 12:04:08,906 INFO L87 Difference]: Start difference. First operand 146 states and 159 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-07-06 12:04:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:09,260 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2021-07-06 12:04:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 12:04:09,261 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2021-07-06 12:04:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:09,261 INFO L225 Difference]: With dead ends: 158 [2021-07-06 12:04:09,261 INFO L226 Difference]: Without dead ends: 158 [2021-07-06 12:04:09,261 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 269.9ms TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2021-07-06 12:04:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-07-06 12:04:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2021-07-06 12:04:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 119 states have internal predecessors, (131), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2021-07-06 12:04:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2021-07-06 12:04:09,263 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 116 [2021-07-06 12:04:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:09,263 INFO L442 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2021-07-06 12:04:09,263 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-07-06 12:04:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2021-07-06 12:04:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-07-06 12:04:09,264 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:04:09,264 INFO L525 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:04:09,264 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-07-06 12:04:09,264 INFO L374 AbstractCegarLoop]: === Iteration 79 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:04:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:04:09,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1646165576, now seen corresponding path program 1 times [2021-07-06 12:04:09,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:04:09,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302832268] [2021-07-06 12:04:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:04:09,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:04:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 12:04:09,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:04:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:04:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:04:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:04:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:09,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:09,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:09,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-07-06 12:04:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:09,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:04:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-06 12:04:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-07-06 12:04:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-07-06 12:04:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:09,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:09,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-07-06 12:04:09,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:09,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302832268] [2021-07-06 12:04:09,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302832268] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:09,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:09,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-06 12:04:09,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344698486] [2021-07-06 12:04:09,612 INFO L425 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-06 12:04:09,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-06 12:04:09,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-07-06 12:04:09,612 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-07-06 12:04:10,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:10,636 INFO L93 Difference]: Finished difference Result 255 states and 277 transitions. [2021-07-06 12:04:10,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-06 12:04:10,637 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-07-06 12:04:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:10,637 INFO L225 Difference]: With dead ends: 255 [2021-07-06 12:04:10,638 INFO L226 Difference]: Without dead ends: 152 [2021-07-06 12:04:10,638 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 579.5ms TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2021-07-06 12:04:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-07-06 12:04:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-07-06 12:04:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 119 states have internal predecessors, (130), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2021-07-06 12:04:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2021-07-06 12:04:10,640 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 116 [2021-07-06 12:04:10,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:10,640 INFO L442 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2021-07-06 12:04:10,641 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-07-06 12:04:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2021-07-06 12:04:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-07-06 12:04:10,641 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 12:04:10,642 INFO L525 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 12:04:10,642 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-07-06 12:04:10,642 INFO L374 AbstractCegarLoop]: === Iteration 80 === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-07-06 12:04:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 12:04:10,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1764607050, now seen corresponding path program 1 times [2021-07-06 12:04:10,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 12:04:10,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774001688] [2021-07-06 12:04:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 12:04:10,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 12:04:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:10,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:10,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:10,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:10,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:10,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 12:04:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:10,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:10,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-06 12:04:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:10,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-07-06 12:04:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:10,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-07-06 12:04:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:10,828 INFO L142 QuantifierPusher]: treesize reduction 7, result has 53.3 percent of original size [2021-07-06 12:04:10,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 12:04:10,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:10,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 12:04:10,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 12:04:10,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 12:04:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:10,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:10,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-07-06 12:04:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:10,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:10,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:10,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 12:04:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:10,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:10,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-07-06 12:04:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:11,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:11,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-06 12:04:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:11,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:11,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-07-06 12:04:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:11,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:11,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:11,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-06 12:04:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:11,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:11,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-07-06 12:04:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:11,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:11,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-07-06 12:04:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 12:04:11,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 12:04:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 12:04:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-07-06 12:04:11,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 12:04:11,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774001688] [2021-07-06 12:04:11,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774001688] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 12:04:11,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 12:04:11,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-07-06 12:04:11,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442145775] [2021-07-06 12:04:11,039 INFO L425 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-06 12:04:11,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 12:04:11,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-06 12:04:11,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-07-06 12:04:11,039 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 10 states have internal predecessors, (81), 6 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-07-06 12:04:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 12:04:11,812 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2021-07-06 12:04:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-06 12:04:11,813 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 10 states have internal predecessors, (81), 6 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 116 [2021-07-06 12:04:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 12:04:11,813 INFO L225 Difference]: With dead ends: 149 [2021-07-06 12:04:11,813 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 12:04:11,813 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 515.6ms TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2021-07-06 12:04:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 12:04:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 12:04:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-07-06 12:04:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 12:04:11,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2021-07-06 12:04:11,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 12:04:11,814 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 12:04:11,814 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 10 states have internal predecessors, (81), 6 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-07-06 12:04:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 12:04:11,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 12:04:11,815 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-07-06 12:04:11,815 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 12:04:11,815 INFO L303 ceAbstractionStarter]: Result for error location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK was SAFE (2/2) [2021-07-06 12:04:11,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 12:04:11 BoogieIcfgContainer [2021-07-06 12:04:11,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 12:04:11,818 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 12:04:11,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 12:04:11,818 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 12:04:11,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 12:01:07" (3/4) ... [2021-07-06 12:04:11,821 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 12:04:11,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-07-06 12:04:11,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure SendSrbSynchronous [2021-07-06 12:04:11,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2021-07-06 12:04:11,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioStartDevice [2021-07-06 12:04:11,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure AG_SetStatusAndReturn [2021-07-06 12:04:11,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure PoCallDriver [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioIsPlayActive [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioHPCdrDeviceControl [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioPower [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure HPCdrCompletion [2021-07-06 12:04:11,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure HpCdrProcessLastSession [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioSignalCompletion [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioPnp [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudio535DeviceControl [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioSendToNextDriver [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-07-06 12:04:11,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioAtapiDeviceControl [2021-07-06 12:04:11,831 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioDeviceControl [2021-07-06 12:04:11,831 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudio435DeviceControl [2021-07-06 12:04:11,831 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioUnload [2021-07-06 12:04:11,831 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioForwardIrpSynchronous [2021-07-06 12:04:11,831 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ZwClose [2021-07-06 12:04:11,850 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 60 nodes and edges [2021-07-06 12:04:11,853 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2021-07-06 12:04:11,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-06 12:04:11,857 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 12:04:11,985 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 12:04:11,985 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 12:04:11,986 INFO L168 Benchmark]: Toolchain (without parser) took 186313.13 ms. Allocated memory was 67.1 MB in the beginning and 497.0 MB in the end (delta: 429.9 MB). Free memory was 45.7 MB in the beginning and 334.6 MB in the end (delta: -288.9 MB). Peak memory consumption was 142.1 MB. Max. memory is 16.1 GB. [2021-07-06 12:04:11,986 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 67.1 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 12:04:11,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.49 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 45.5 MB in the beginning and 52.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-07-06 12:04:11,986 INFO L168 Benchmark]: Boogie Preprocessor took 128.01 ms. Allocated memory is still 88.1 MB. Free memory was 52.0 MB in the beginning and 46.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-06 12:04:11,987 INFO L168 Benchmark]: RCFGBuilder took 1320.71 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 46.5 MB in the beginning and 76.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-07-06 12:04:11,987 INFO L168 Benchmark]: TraceAbstraction took 184103.82 ms. Allocated memory was 115.3 MB in the beginning and 497.0 MB in the end (delta: 381.7 MB). Free memory was 76.1 MB in the beginning and 369.6 MB in the end (delta: -293.5 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. [2021-07-06 12:04:11,987 INFO L168 Benchmark]: Witness Printer took 167.06 ms. Allocated memory is still 497.0 MB. Free memory was 369.6 MB in the beginning and 334.6 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-07-06 12:04:11,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 67.1 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 587.49 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 45.5 MB in the beginning and 52.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 128.01 ms. Allocated memory is still 88.1 MB. Free memory was 52.0 MB in the beginning and 46.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1320.71 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 46.5 MB in the beginning and 76.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 184103.82 ms. Allocated memory was 115.3 MB in the beginning and 497.0 MB in the end (delta: 381.7 MB). Free memory was 76.1 MB in the beginning and 369.6 MB in the end (delta: -293.5 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. * Witness Printer took 167.06 ms. Allocated memory is still 497.0 MB. Free memory was 369.6 MB in the beginning and 334.6 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1717]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 59]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0ENSURES_VIOLATIONMEMORY_LEAK CFG has 31 procedures, 519 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2604.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 19.5ms, AutomataDifference: 2058.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 742 SDtfs, 386 SDslu, 96 SDs, 0 SdLazy, 941 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1615.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 130.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=516occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 61.3ms SatisfiabilityAnalysisTime, 294.2ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK CFG has 31 procedures, 519 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 181438.3ms, OverallIterations: 80, TraceHistogramMax: 2, EmptinessCheckTime: 121.1ms, AutomataDifference: 156722.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40138 SDtfs, 61114 SDslu, 90400 SDs, 0 SdLazy, 184631 SolverSat, 20014 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 114319.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2346 GetRequests, 982 SyntacticMatches, 1 SemanticMatches, 1363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3565 ImplicationChecksByTransitivity, 32133.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=947occurred in iteration=65, InterpolantAutomatonStates: 1067, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 951.3ms AutomataMinimizationTime, 80 MinimizatonAttempts, 5314 StatesRemovedByMinimization, 52 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 280.0ms SsaConstructionTime, 749.3ms SatisfiabilityAnalysisTime, 21768.6ms InterpolantComputationTime, 5227 NumberOfCodeBlocks, 5227 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 5146 ConstructedInterpolants, 0 QuantifiedInterpolants, 27128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 942 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 81 InterpolantComputations, 80 PerfectInterpolantSequences, 46/48 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-07-06 12:04:12,027 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...