/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:20:57,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:20:57,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:20:57,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:20:57,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:20:57,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:20:57,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:20:57,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:20:57,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:20:57,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:20:57,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:20:57,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:20:57,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:20:57,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:20:57,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:20:57,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:20:57,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:20:57,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 15:20:57,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 15:20:57,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 15:20:57,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 15:20:57,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 15:20:57,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 15:20:57,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 15:20:57,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 15:20:57,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:20:57,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:20:57,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:20:57,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:20:57,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:20:57,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:20:57,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:20:57,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:20:57,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:20:57,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:20:57,247 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:20:57,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:20:57,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:20:57,247 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:20:57,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:20:57,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:20:57,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:20:57,248 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:20:57,248 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:20:57,248 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:20:57,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:20:57,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:20:57,249 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:20:57,249 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:20:57,252 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:20:57,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:20:57,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:20:57,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:20:57,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:20:57,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:57,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:20:57,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:20:57,254 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:20:57,254 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:20:57,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:20:57,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:20:57,255 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:20:57,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:20:57,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:20:57,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:20:57,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:20:57,763 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:20:57,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2021-10-07 15:20:57,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7c109060/b4a93f5f39ca4fd6a7215b1973323997/FLAG75034524f [2021-10-07 15:20:58,526 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:20:58,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2021-10-07 15:20:58,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7c109060/b4a93f5f39ca4fd6a7215b1973323997/FLAG75034524f [2021-10-07 15:20:58,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7c109060/b4a93f5f39ca4fd6a7215b1973323997 [2021-10-07 15:20:58,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:20:58,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:20:58,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:58,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:20:58,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:20:58,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:58,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b47923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:58, skipping insertion in model container [2021-10-07 15:20:58,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:58,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:20:58,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:20:59,211 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c[2447,2460] [2021-10-07 15:20:59,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,248 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:20:59,297 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c[2447,2460] [2021-10-07 15:20:59,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,326 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:20:59,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59 WrapperNode [2021-10-07 15:20:59,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:59,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:20:59,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:20:59,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:20:59,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:20:59,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:20:59,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:20:59,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:20:59,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:59,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:59,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:20:59,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:20:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:20:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:20:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:20:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:20:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:20:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:20:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:20:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-07 15:20:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-07 15:20:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:20:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:20:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:20:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:20:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:20:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:20:59,610 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:21:00,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:21:00,220 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-07 15:21:00,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00 BoogieIcfgContainer [2021-10-07 15:21:00,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:21:00,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:21:00,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:21:00,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:21:00,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:20:58" (1/3) ... [2021-10-07 15:21:00,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ef6653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (2/3) ... [2021-10-07 15:21:00,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ef6653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00" (3/3) ... [2021-10-07 15:21:00,242 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2021-10-07 15:21:00,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:21:00,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-07 15:21:00,273 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:21:00,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,328 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,328 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,331 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,331 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,331 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,332 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,332 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,333 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,333 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,333 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,337 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,338 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,344 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,347 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,347 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,350 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,350 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,366 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-07 15:21:00,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:21:00,432 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:21:00,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-07 15:21:00,453 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:21:00,466 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 149 transitions, 330 flow [2021-10-07 15:21:00,470 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 149 transitions, 330 flow [2021-10-07 15:21:00,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2021-10-07 15:21:00,596 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2021-10-07 15:21:00,597 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-07 15:21:00,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2021-10-07 15:21:00,612 INFO L116 LiptonReduction]: Number of co-enabled transitions 2736 [2021-10-07 15:21:17,654 INFO L131 LiptonReduction]: Checked pairs total: 3172 [2021-10-07 15:21:17,655 INFO L133 LiptonReduction]: Total number of compositions: 144 [2021-10-07 15:21:17,666 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2021-10-07 15:21:17,695 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 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) [2021-10-07 15:21:17,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 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) [2021-10-07 15:21:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:21:17,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:17,706 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:21:17,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:17,713 INFO L82 PathProgramCache]: Analyzing trace with hash 553, now seen corresponding path program 1 times [2021-10-07 15:21:17,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:17,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603521182] [2021-10-07 15:21:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:17,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:17,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:17,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:17,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:21:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:17,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:21:17,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:17,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:17,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:17,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603521182] [2021-10-07 15:21:17,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603521182] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:17,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:17,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:21:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510172857] [2021-10-07 15:21:17,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:21:17,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:17,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:21:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:21:17,850 INFO L87 Difference]: Start difference. First operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-10-07 15:21:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:17,881 INFO L93 Difference]: Finished difference Result 180 states and 692 transitions. [2021-10-07 15:21:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:21:17,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 15:21:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:17,898 INFO L225 Difference]: With dead ends: 180 [2021-10-07 15:21:17,898 INFO L226 Difference]: Without dead ends: 180 [2021-10-07 15:21:17,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:21:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-07 15:21:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-07 15:21:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 165 states have (on average 4.193939393939394) internal successors, (692), 179 states have internal predecessors, (692), 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) [2021-10-07 15:21:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 692 transitions. [2021-10-07 15:21:17,965 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 692 transitions. Word has length 1 [2021-10-07 15:21:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:17,967 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 692 transitions. [2021-10-07 15:21:17,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-10-07 15:21:17,968 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 692 transitions. [2021-10-07 15:21:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:21:17,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:17,969 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:21:17,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 15:21:18,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:18,181 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:18,182 INFO L82 PathProgramCache]: Analyzing trace with hash 542398, now seen corresponding path program 1 times [2021-10-07 15:21:18,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:18,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393964077] [2021-10-07 15:21:18,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:18,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:18,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:18,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:21:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:18,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:21:18,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:18,698 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-07 15:21:18,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 79 [2021-10-07 15:21:18,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 104 [2021-10-07 15:21:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:20,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:20,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:20,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393964077] [2021-10-07 15:21:20,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393964077] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:20,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:20,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:20,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655510528] [2021-10-07 15:21:20,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:20,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:20,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:20,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:20,160 INFO L87 Difference]: Start difference. First operand 180 states and 692 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-07 15:21:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:20,251 INFO L93 Difference]: Finished difference Result 170 states and 656 transitions. [2021-10-07 15:21:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:20,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:21:20,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:20,256 INFO L225 Difference]: With dead ends: 170 [2021-10-07 15:21:20,256 INFO L226 Difference]: Without dead ends: 170 [2021-10-07 15:21:20,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-07 15:21:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-07 15:21:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 4.178343949044586) internal successors, (656), 169 states have internal predecessors, (656), 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) [2021-10-07 15:21:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 656 transitions. [2021-10-07 15:21:20,276 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 656 transitions. Word has length 3 [2021-10-07 15:21:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:20,277 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 656 transitions. [2021-10-07 15:21:20,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-07 15:21:20,278 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 656 transitions. [2021-10-07 15:21:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:21:20,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:20,278 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:21:20,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:20,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:20,493 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:20,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:20,494 INFO L82 PathProgramCache]: Analyzing trace with hash 542400, now seen corresponding path program 1 times [2021-10-07 15:21:20,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:20,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913263595] [2021-10-07 15:21:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:20,496 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:20,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:20,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:20,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:21:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:20,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:21:20,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:20,807 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 15:21:20,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 148 [2021-10-07 15:21:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:24,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:24,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:24,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913263595] [2021-10-07 15:21:24,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913263595] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:24,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:24,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:24,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86856820] [2021-10-07 15:21:24,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:24,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:24,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:24,885 INFO L87 Difference]: Start difference. First operand 170 states and 656 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-07 15:21:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:24,980 INFO L93 Difference]: Finished difference Result 160 states and 620 transitions. [2021-10-07 15:21:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:24,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:21:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:24,986 INFO L225 Difference]: With dead ends: 160 [2021-10-07 15:21:24,987 INFO L226 Difference]: Without dead ends: 160 [2021-10-07 15:21:24,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-07 15:21:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-07 15:21:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 4.1610738255033555) internal successors, (620), 159 states have internal predecessors, (620), 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) [2021-10-07 15:21:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 620 transitions. [2021-10-07 15:21:25,012 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 620 transitions. Word has length 3 [2021-10-07 15:21:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:25,013 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 620 transitions. [2021-10-07 15:21:25,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-07 15:21:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 620 transitions. [2021-10-07 15:21:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:21:25,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:25,014 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:21:25,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:25,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:25,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:25,233 INFO L82 PathProgramCache]: Analyzing trace with hash 521257500, now seen corresponding path program 1 times [2021-10-07 15:21:25,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:25,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709540416] [2021-10-07 15:21:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:25,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:25,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:25,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:25,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:21:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:25,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:21:25,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:25,555 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 15:21:25,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-07 15:21:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:26,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:26,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:26,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709540416] [2021-10-07 15:21:26,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709540416] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:26,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:26,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:21:26,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43340408] [2021-10-07 15:21:26,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:21:26,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:21:26,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:26,103 INFO L87 Difference]: Start difference. First operand 160 states and 620 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-07 15:21:26,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:26,150 INFO L93 Difference]: Finished difference Result 152 states and 596 transitions. [2021-10-07 15:21:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:26,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:21:26,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:26,153 INFO L225 Difference]: With dead ends: 152 [2021-10-07 15:21:26,153 INFO L226 Difference]: Without dead ends: 152 [2021-10-07 15:21:26,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-07 15:21:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-07 15:21:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 4.1678321678321675) internal successors, (596), 151 states have internal predecessors, (596), 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) [2021-10-07 15:21:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 596 transitions. [2021-10-07 15:21:26,165 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 596 transitions. Word has length 5 [2021-10-07 15:21:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:26,165 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 596 transitions. [2021-10-07 15:21:26,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-07 15:21:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 596 transitions. [2021-10-07 15:21:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:21:26,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:26,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:21:26,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-07 15:21:26,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:26,385 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:26,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:26,386 INFO L82 PathProgramCache]: Analyzing trace with hash 521257501, now seen corresponding path program 1 times [2021-10-07 15:21:26,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:26,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761558727] [2021-10-07 15:21:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:26,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:26,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:26,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:21:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:26,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:21:26,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:26,684 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-07 15:21:26,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-07 15:21:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:26,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:26,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:26,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761558727] [2021-10-07 15:21:26,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761558727] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:26,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:26,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:26,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141307634] [2021-10-07 15:21:26,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:26,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:26,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:26,827 INFO L87 Difference]: Start difference. First operand 152 states and 596 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-07 15:21:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:26,885 INFO L93 Difference]: Finished difference Result 144 states and 572 transitions. [2021-10-07 15:21:26,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:26,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:21:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:26,889 INFO L225 Difference]: With dead ends: 144 [2021-10-07 15:21:26,889 INFO L226 Difference]: Without dead ends: 144 [2021-10-07 15:21:26,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-07 15:21:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-07 15:21:26,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 137 states have (on average 4.175182481751825) internal successors, (572), 143 states have internal predecessors, (572), 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) [2021-10-07 15:21:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 572 transitions. [2021-10-07 15:21:26,903 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 572 transitions. Word has length 5 [2021-10-07 15:21:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:26,903 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 572 transitions. [2021-10-07 15:21:26,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-07 15:21:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 572 transitions. [2021-10-07 15:21:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:21:26,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:26,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:26,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-07 15:21:27,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:27,117 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:27,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1582702213, now seen corresponding path program 1 times [2021-10-07 15:21:27,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:27,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885361646] [2021-10-07 15:21:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:27,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:27,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:27,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:27,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:21:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:27,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:21:27,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:27,404 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-07 15:21:27,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-07 15:21:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:27,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:27,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:27,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885361646] [2021-10-07 15:21:27,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885361646] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:27,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:27,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:27,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772625895] [2021-10-07 15:21:27,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:27,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:27,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:27,616 INFO L87 Difference]: Start difference. First operand 144 states and 572 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-07 15:21:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:27,660 INFO L93 Difference]: Finished difference Result 134 states and 536 transitions. [2021-10-07 15:21:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:27,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:21:27,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:27,662 INFO L225 Difference]: With dead ends: 134 [2021-10-07 15:21:27,662 INFO L226 Difference]: Without dead ends: 134 [2021-10-07 15:21:27,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:27,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-07 15:21:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-07 15:21:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 4.155038759689923) internal successors, (536), 133 states have internal predecessors, (536), 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) [2021-10-07 15:21:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 536 transitions. [2021-10-07 15:21:27,669 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 536 transitions. Word has length 7 [2021-10-07 15:21:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:27,670 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 536 transitions. [2021-10-07 15:21:27,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-07 15:21:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 536 transitions. [2021-10-07 15:21:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:21:27,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:27,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:27,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:27,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:27,886 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1582702214, now seen corresponding path program 1 times [2021-10-07 15:21:27,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:27,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131800472] [2021-10-07 15:21:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:27,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:27,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:27,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:27,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:21:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:27,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:21:27,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:28,170 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 15:21:28,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-07 15:21:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:28,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:28,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:28,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131800472] [2021-10-07 15:21:28,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131800472] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:28,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:28,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:21:28,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112158567] [2021-10-07 15:21:28,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:21:28,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:21:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:28,726 INFO L87 Difference]: Start difference. First operand 134 states and 536 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-07 15:21:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:28,762 INFO L93 Difference]: Finished difference Result 124 states and 500 transitions. [2021-10-07 15:21:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:28,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:21:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:28,766 INFO L225 Difference]: With dead ends: 124 [2021-10-07 15:21:28,766 INFO L226 Difference]: Without dead ends: 124 [2021-10-07 15:21:28,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-07 15:21:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-07 15:21:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 4.132231404958677) internal successors, (500), 123 states have internal predecessors, (500), 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) [2021-10-07 15:21:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 500 transitions. [2021-10-07 15:21:28,773 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 500 transitions. Word has length 7 [2021-10-07 15:21:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:28,774 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 500 transitions. [2021-10-07 15:21:28,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-07 15:21:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 500 transitions. [2021-10-07 15:21:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:21:28,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:28,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:28,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:28,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:28,988 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:28,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:28,989 INFO L82 PathProgramCache]: Analyzing trace with hash -558390861, now seen corresponding path program 1 times [2021-10-07 15:21:28,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:28,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192358133] [2021-10-07 15:21:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:28,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:28,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:28,991 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:28,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:21:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:29,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:21:29,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:29,274 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 15:21:29,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-07 15:21:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:29,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:29,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:29,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192358133] [2021-10-07 15:21:29,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192358133] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:29,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:29,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:21:29,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342824096] [2021-10-07 15:21:29,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:21:29,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:21:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:29,821 INFO L87 Difference]: Start difference. First operand 124 states and 500 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-07 15:21:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:29,887 INFO L93 Difference]: Finished difference Result 108 states and 420 transitions. [2021-10-07 15:21:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:21:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:29,891 INFO L225 Difference]: With dead ends: 108 [2021-10-07 15:21:29,891 INFO L226 Difference]: Without dead ends: 108 [2021-10-07 15:21:29,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:29,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-07 15:21:29,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-07 15:21:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 3.9622641509433962) internal successors, (420), 107 states have internal predecessors, (420), 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) [2021-10-07 15:21:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 420 transitions. [2021-10-07 15:21:29,898 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 420 transitions. Word has length 9 [2021-10-07 15:21:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:29,898 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 420 transitions. [2021-10-07 15:21:29,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-07 15:21:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 420 transitions. [2021-10-07 15:21:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:21:29,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:29,900 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:29,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:30,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:30,115 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:30,116 INFO L82 PathProgramCache]: Analyzing trace with hash -558390860, now seen corresponding path program 1 times [2021-10-07 15:21:30,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:30,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50836662] [2021-10-07 15:21:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:30,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:30,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:30,120 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:30,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:21:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:30,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:21:30,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:30,440 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-07 15:21:30,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 73 [2021-10-07 15:21:30,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 93 [2021-10-07 15:21:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:31,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:31,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:31,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50836662] [2021-10-07 15:21:31,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50836662] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:31,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:31,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:21:31,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697499157] [2021-10-07 15:21:31,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:31,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:31,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:31,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:31,383 INFO L87 Difference]: Start difference. First operand 108 states and 420 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-07 15:21:31,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:31,436 INFO L93 Difference]: Finished difference Result 92 states and 340 transitions. [2021-10-07 15:21:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:31,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:21:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:31,439 INFO L225 Difference]: With dead ends: 92 [2021-10-07 15:21:31,439 INFO L226 Difference]: Without dead ends: 92 [2021-10-07 15:21:31,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-07 15:21:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-07 15:21:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 3.7362637362637363) internal successors, (340), 91 states have internal predecessors, (340), 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) [2021-10-07 15:21:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 340 transitions. [2021-10-07 15:21:31,444 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 340 transitions. Word has length 9 [2021-10-07 15:21:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:31,445 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 340 transitions. [2021-10-07 15:21:31,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-07 15:21:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 340 transitions. [2021-10-07 15:21:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:21:31,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:31,447 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:31,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:31,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:31,658 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:31,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1915921125, now seen corresponding path program 1 times [2021-10-07 15:21:31,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:31,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845116328] [2021-10-07 15:21:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:31,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:31,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:31,662 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:31,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:21:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:31,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:21:31,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:32,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:32,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:32,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845116328] [2021-10-07 15:21:32,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845116328] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:32,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:32,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:32,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090782734] [2021-10-07 15:21:32,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:32,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:32,211 INFO L87 Difference]: Start difference. First operand 92 states and 340 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:32,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:32,245 INFO L93 Difference]: Finished difference Result 181 states and 677 transitions. [2021-10-07 15:21:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:32,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 15:21:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:32,248 INFO L225 Difference]: With dead ends: 181 [2021-10-07 15:21:32,248 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 15:21:32,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:32,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 15:21:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-07 15:21:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 3.7953216374269005) internal successors, (649), 171 states have internal predecessors, (649), 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) [2021-10-07 15:21:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 649 transitions. [2021-10-07 15:21:32,257 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 649 transitions. Word has length 21 [2021-10-07 15:21:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:32,258 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 649 transitions. [2021-10-07 15:21:32,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 649 transitions. [2021-10-07 15:21:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:32,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:32,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:32,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:32,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:32,473 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:32,474 INFO L82 PathProgramCache]: Analyzing trace with hash -937109729, now seen corresponding path program 1 times [2021-10-07 15:21:32,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:32,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030320222] [2021-10-07 15:21:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:32,475 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:32,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:32,478 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:32,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:21:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:32,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:21:32,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:32,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:32,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:32,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030320222] [2021-10-07 15:21:32,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030320222] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:32,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:32,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:21:32,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928750673] [2021-10-07 15:21:32,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:32,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:32,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:32,798 INFO L87 Difference]: Start difference. First operand 172 states and 649 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-10-07 15:21:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:32,932 INFO L93 Difference]: Finished difference Result 292 states and 1017 transitions. [2021-10-07 15:21:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:21:32,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:32,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:32,936 INFO L225 Difference]: With dead ends: 292 [2021-10-07 15:21:32,936 INFO L226 Difference]: Without dead ends: 276 [2021-10-07 15:21:32,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-07 15:21:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 216. [2021-10-07 15:21:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.8) internal successors, (817), 215 states have internal predecessors, (817), 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) [2021-10-07 15:21:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 817 transitions. [2021-10-07 15:21:32,948 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 817 transitions. Word has length 22 [2021-10-07 15:21:32,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:32,948 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 817 transitions. [2021-10-07 15:21:32,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-10-07 15:21:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 817 transitions. [2021-10-07 15:21:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:32,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:32,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:32,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:33,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:33,166 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash -537022204, now seen corresponding path program 1 times [2021-10-07 15:21:33,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:33,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150005014] [2021-10-07 15:21:33,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:33,169 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:33,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:33,169 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:33,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:21:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:33,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:21:33,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:33,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:33,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:33,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150005014] [2021-10-07 15:21:33,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150005014] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:33,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:33,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:21:33,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796664099] [2021-10-07 15:21:33,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:33,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:33,514 INFO L87 Difference]: Start difference. First operand 216 states and 817 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-10-07 15:21:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:33,664 INFO L93 Difference]: Finished difference Result 262 states and 967 transitions. [2021-10-07 15:21:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:21:33,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:33,668 INFO L225 Difference]: With dead ends: 262 [2021-10-07 15:21:33,669 INFO L226 Difference]: Without dead ends: 262 [2021-10-07 15:21:33,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-07 15:21:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 244. [2021-10-07 15:21:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 3.8395061728395063) internal successors, (933), 243 states have internal predecessors, (933), 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) [2021-10-07 15:21:33,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 933 transitions. [2021-10-07 15:21:33,684 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 933 transitions. Word has length 22 [2021-10-07 15:21:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:33,685 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 933 transitions. [2021-10-07 15:21:33,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-10-07 15:21:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 933 transitions. [2021-10-07 15:21:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:33,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:33,687 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:33,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:33,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:33,901 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:33,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1956932113, now seen corresponding path program 2 times [2021-10-07 15:21:33,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:33,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758913265] [2021-10-07 15:21:33,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:33,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:33,904 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:33,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:21:34,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:34,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:34,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:34,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:34,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:34,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:34,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758913265] [2021-10-07 15:21:34,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758913265] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:21:34,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:21:34,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-07 15:21:34,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845714410] [2021-10-07 15:21:34,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:34,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:34,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:34,369 INFO L87 Difference]: Start difference. First operand 244 states and 933 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:34,449 INFO L93 Difference]: Finished difference Result 308 states and 1151 transitions. [2021-10-07 15:21:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:21:34,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:34,453 INFO L225 Difference]: With dead ends: 308 [2021-10-07 15:21:34,453 INFO L226 Difference]: Without dead ends: 308 [2021-10-07 15:21:34,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:34,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-07 15:21:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 290. [2021-10-07 15:21:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 3.865051903114187) internal successors, (1117), 289 states have internal predecessors, (1117), 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) [2021-10-07 15:21:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 1117 transitions. [2021-10-07 15:21:34,467 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 1117 transitions. Word has length 22 [2021-10-07 15:21:34,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:34,468 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 1117 transitions. [2021-10-07 15:21:34,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 1117 transitions. [2021-10-07 15:21:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:34,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:34,470 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:34,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-07 15:21:34,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:34,682 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:34,683 INFO L82 PathProgramCache]: Analyzing trace with hash -29338789, now seen corresponding path program 1 times [2021-10-07 15:21:34,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:34,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696928549] [2021-10-07 15:21:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:34,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:34,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:34,687 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:34,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:21:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:34,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:21:34,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:34,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:35,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:35,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696928549] [2021-10-07 15:21:35,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696928549] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:35,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:35,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:21:35,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482292190] [2021-10-07 15:21:35,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:35,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:35,049 INFO L87 Difference]: Start difference. First operand 290 states and 1117 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-10-07 15:21:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:35,214 INFO L93 Difference]: Finished difference Result 568 states and 2007 transitions. [2021-10-07 15:21:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:21:35,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:35,221 INFO L225 Difference]: With dead ends: 568 [2021-10-07 15:21:35,221 INFO L226 Difference]: Without dead ends: 546 [2021-10-07 15:21:35,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:35,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-07 15:21:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 356. [2021-10-07 15:21:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.935211267605634) internal successors, (1397), 355 states have internal predecessors, (1397), 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) [2021-10-07 15:21:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1397 transitions. [2021-10-07 15:21:35,265 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1397 transitions. Word has length 22 [2021-10-07 15:21:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:35,266 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1397 transitions. [2021-10-07 15:21:35,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-10-07 15:21:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1397 transitions. [2021-10-07 15:21:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:35,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:35,268 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:35,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-07 15:21:35,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:35,482 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:35,483 INFO L82 PathProgramCache]: Analyzing trace with hash -504537127, now seen corresponding path program 2 times [2021-10-07 15:21:35,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:35,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378934854] [2021-10-07 15:21:35,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:35,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:35,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:35,486 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:35,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:21:35,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:35,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:35,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:35,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:35,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:36,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:36,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378934854] [2021-10-07 15:21:36,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378934854] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:36,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:36,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:21:36,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830046206] [2021-10-07 15:21:36,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:36,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:36,030 INFO L87 Difference]: Start difference. First operand 356 states and 1397 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-10-07 15:21:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:36,386 INFO L93 Difference]: Finished difference Result 1160 states and 4376 transitions. [2021-10-07 15:21:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:21:36,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:36,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:36,399 INFO L225 Difference]: With dead ends: 1160 [2021-10-07 15:21:36,399 INFO L226 Difference]: Without dead ends: 1160 [2021-10-07 15:21:36,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 138.9ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-10-07 15:21:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 538. [2021-10-07 15:21:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 4.37243947858473) internal successors, (2348), 537 states have internal predecessors, (2348), 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) [2021-10-07 15:21:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 2348 transitions. [2021-10-07 15:21:36,441 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 2348 transitions. Word has length 22 [2021-10-07 15:21:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:36,441 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 2348 transitions. [2021-10-07 15:21:36,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-10-07 15:21:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 2348 transitions. [2021-10-07 15:21:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:36,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:36,444 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:36,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:36,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:36,659 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:36,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:36,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2078561736, now seen corresponding path program 1 times [2021-10-07 15:21:36,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:36,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943843806] [2021-10-07 15:21:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:36,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:36,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:36,662 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:36,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:21:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:36,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:36,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:36,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:37,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:37,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943843806] [2021-10-07 15:21:37,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943843806] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:37,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:37,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:21:37,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537235568] [2021-10-07 15:21:37,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:37,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:37,140 INFO L87 Difference]: Start difference. First operand 538 states and 2348 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-10-07 15:21:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:37,490 INFO L93 Difference]: Finished difference Result 1442 states and 5724 transitions. [2021-10-07 15:21:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:21:37,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:37,505 INFO L225 Difference]: With dead ends: 1442 [2021-10-07 15:21:37,506 INFO L226 Difference]: Without dead ends: 1442 [2021-10-07 15:21:37,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-10-07 15:21:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 740. [2021-10-07 15:21:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 4.57510148849797) internal successors, (3381), 739 states have internal predecessors, (3381), 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) [2021-10-07 15:21:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 3381 transitions. [2021-10-07 15:21:37,553 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 3381 transitions. Word has length 22 [2021-10-07 15:21:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:37,553 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 3381 transitions. [2021-10-07 15:21:37,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-10-07 15:21:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 3381 transitions. [2021-10-07 15:21:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:37,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:37,557 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:37,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:37,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:37,768 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:37,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:37,768 INFO L82 PathProgramCache]: Analyzing trace with hash 331058400, now seen corresponding path program 1 times [2021-10-07 15:21:37,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:37,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629760882] [2021-10-07 15:21:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:37,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:37,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:37,771 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:37,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:21:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:37,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:37,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:38,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:38,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:38,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629760882] [2021-10-07 15:21:38,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629760882] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:38,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:38,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:38,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993424186] [2021-10-07 15:21:38,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:38,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:38,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:38,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:38,591 INFO L87 Difference]: Start difference. First operand 740 states and 3381 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-10-07 15:21:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:38,792 INFO L93 Difference]: Finished difference Result 952 states and 4137 transitions. [2021-10-07 15:21:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:21:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:21:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:38,803 INFO L225 Difference]: With dead ends: 952 [2021-10-07 15:21:38,804 INFO L226 Difference]: Without dead ends: 922 [2021-10-07 15:21:38,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:38,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-10-07 15:21:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 814. [2021-10-07 15:21:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 4.5793357933579335) internal successors, (3723), 813 states have internal predecessors, (3723), 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) [2021-10-07 15:21:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 3723 transitions. [2021-10-07 15:21:38,844 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 3723 transitions. Word has length 23 [2021-10-07 15:21:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:38,844 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 3723 transitions. [2021-10-07 15:21:38,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-10-07 15:21:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 3723 transitions. [2021-10-07 15:21:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:38,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:38,849 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:38,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:39,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:39,062 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:39,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:39,063 INFO L82 PathProgramCache]: Analyzing trace with hash -336388294, now seen corresponding path program 2 times [2021-10-07 15:21:39,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:39,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719829073] [2021-10-07 15:21:39,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:39,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:39,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:39,065 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:39,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:21:39,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:39,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:39,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:39,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:39,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:40,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:40,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719829073] [2021-10-07 15:21:40,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719829073] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:40,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:40,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:40,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262982842] [2021-10-07 15:21:40,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:40,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:40,082 INFO L87 Difference]: Start difference. First operand 814 states and 3723 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-10-07 15:21:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:40,296 INFO L93 Difference]: Finished difference Result 1024 states and 4442 transitions. [2021-10-07 15:21:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:21:40,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:21:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:40,307 INFO L225 Difference]: With dead ends: 1024 [2021-10-07 15:21:40,307 INFO L226 Difference]: Without dead ends: 994 [2021-10-07 15:21:40,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-10-07 15:21:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 882. [2021-10-07 15:21:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 4.543700340522134) internal successors, (4003), 881 states have internal predecessors, (4003), 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) [2021-10-07 15:21:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 4003 transitions. [2021-10-07 15:21:40,350 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 4003 transitions. Word has length 23 [2021-10-07 15:21:40,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:40,350 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 4003 transitions. [2021-10-07 15:21:40,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-10-07 15:21:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 4003 transitions. [2021-10-07 15:21:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:40,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:40,355 INFO L512 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] [2021-10-07 15:21:40,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:40,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:40,569 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:40,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1756298203, now seen corresponding path program 3 times [2021-10-07 15:21:40,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:40,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431849634] [2021-10-07 15:21:40,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:21:40,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:40,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:40,572 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:40,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:21:40,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:21:40,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:40,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:21:40,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:41,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:41,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:41,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431849634] [2021-10-07 15:21:41,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431849634] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:41,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-07 15:21:41,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263338229] [2021-10-07 15:21:41,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:21:41,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:21:41,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:21:41,339 INFO L87 Difference]: Start difference. First operand 882 states and 4003 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 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) [2021-10-07 15:21:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:42,380 INFO L93 Difference]: Finished difference Result 2214 states and 9877 transitions. [2021-10-07 15:21:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:21:42,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:21:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:42,404 INFO L225 Difference]: With dead ends: 2214 [2021-10-07 15:21:42,404 INFO L226 Difference]: Without dead ends: 2214 [2021-10-07 15:21:42,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 588.2ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:21:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-10-07 15:21:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1274. [2021-10-07 15:21:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 5.029850746268656) internal successors, (6403), 1273 states have internal predecessors, (6403), 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) [2021-10-07 15:21:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 6403 transitions. [2021-10-07 15:21:42,468 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 6403 transitions. Word has length 23 [2021-10-07 15:21:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:42,469 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 6403 transitions. [2021-10-07 15:21:42,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 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) [2021-10-07 15:21:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 6403 transitions. [2021-10-07 15:21:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:42,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:42,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:42,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:42,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:42,688 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:42,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash -951662070, now seen corresponding path program 1 times [2021-10-07 15:21:42,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:42,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205953481] [2021-10-07 15:21:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:42,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:42,691 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:42,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:21:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:42,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:42,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:43,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:43,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:43,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205953481] [2021-10-07 15:21:43,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205953481] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:43,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:43,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:43,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932849327] [2021-10-07 15:21:43,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:43,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:43,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:43,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:43,649 INFO L87 Difference]: Start difference. First operand 1274 states and 6403 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-10-07 15:21:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:43,987 INFO L93 Difference]: Finished difference Result 1552 states and 7329 transitions. [2021-10-07 15:21:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:21:43,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:21:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:44,003 INFO L225 Difference]: With dead ends: 1552 [2021-10-07 15:21:44,003 INFO L226 Difference]: Without dead ends: 1502 [2021-10-07 15:21:44,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-10-07 15:21:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1362. [2021-10-07 15:21:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 4.986039676708303) internal successors, (6786), 1361 states have internal predecessors, (6786), 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) [2021-10-07 15:21:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 6786 transitions. [2021-10-07 15:21:44,060 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 6786 transitions. Word has length 23 [2021-10-07 15:21:44,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:44,060 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 6786 transitions. [2021-10-07 15:21:44,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-10-07 15:21:44,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 6786 transitions. [2021-10-07 15:21:44,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:44,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:44,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:44,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:44,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:44,281 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:44,282 INFO L82 PathProgramCache]: Analyzing trace with hash -941635510, now seen corresponding path program 2 times [2021-10-07 15:21:44,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:44,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601469601] [2021-10-07 15:21:44,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:44,283 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:44,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:44,284 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:44,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:21:44,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:44,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:44,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:44,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:45,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:45,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:45,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601469601] [2021-10-07 15:21:45,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601469601] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:45,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:45,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:45,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37245333] [2021-10-07 15:21:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:45,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:45,276 INFO L87 Difference]: Start difference. First operand 1362 states and 6786 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-10-07 15:21:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:45,481 INFO L93 Difference]: Finished difference Result 1656 states and 7765 transitions. [2021-10-07 15:21:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:21:45,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:21:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:45,498 INFO L225 Difference]: With dead ends: 1656 [2021-10-07 15:21:45,499 INFO L226 Difference]: Without dead ends: 1606 [2021-10-07 15:21:45,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 90.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-07 15:21:45,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1442. [2021-10-07 15:21:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 4.951422623178348) internal successors, (7135), 1441 states have internal predecessors, (7135), 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) [2021-10-07 15:21:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 7135 transitions. [2021-10-07 15:21:45,559 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 7135 transitions. Word has length 23 [2021-10-07 15:21:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:45,560 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 7135 transitions. [2021-10-07 15:21:45,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-10-07 15:21:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 7135 transitions. [2021-10-07 15:21:45,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:45,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:45,567 INFO L512 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] [2021-10-07 15:21:45,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:45,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:45,781 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:45,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1471753348, now seen corresponding path program 3 times [2021-10-07 15:21:45,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:45,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616681472] [2021-10-07 15:21:45,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:21:45,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:45,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:45,783 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:45,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:21:46,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:21:46,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:46,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:21:46,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:46,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:46,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:46,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616681472] [2021-10-07 15:21:46,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616681472] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:46,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:46,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-07 15:21:46,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833294889] [2021-10-07 15:21:46,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:21:46,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:21:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:21:46,782 INFO L87 Difference]: Start difference. First operand 1442 states and 7135 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-10-07 15:21:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:49,297 INFO L93 Difference]: Finished difference Result 2342 states and 10803 transitions. [2021-10-07 15:21:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:21:49,298 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:21:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:49,313 INFO L225 Difference]: With dead ends: 2342 [2021-10-07 15:21:49,313 INFO L226 Difference]: Without dead ends: 2318 [2021-10-07 15:21:49,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 713.2ms TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:21:49,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-10-07 15:21:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1700. [2021-10-07 15:21:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1699 states have (on average 4.974102413184226) internal successors, (8451), 1699 states have internal predecessors, (8451), 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) [2021-10-07 15:21:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 8451 transitions. [2021-10-07 15:21:49,409 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 8451 transitions. Word has length 24 [2021-10-07 15:21:49,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:49,409 INFO L470 AbstractCegarLoop]: Abstraction has 1700 states and 8451 transitions. [2021-10-07 15:21:49,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-10-07 15:21:49,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 8451 transitions. [2021-10-07 15:21:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:49,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:49,417 INFO L512 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] [2021-10-07 15:21:49,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:49,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:49,630 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:49,631 INFO L82 PathProgramCache]: Analyzing trace with hash -77969484, now seen corresponding path program 4 times [2021-10-07 15:21:49,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:49,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495538154] [2021-10-07 15:21:49,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:21:49,632 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:49,633 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:49,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:21:49,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:21:49,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:49,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:21:49,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:50,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:50,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:50,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495538154] [2021-10-07 15:21:50,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495538154] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:50,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:50,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-07 15:21:50,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648347423] [2021-10-07 15:21:50,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:21:50,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:50,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:21:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:21:50,546 INFO L87 Difference]: Start difference. First operand 1700 states and 8451 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-10-07 15:21:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:54,625 INFO L93 Difference]: Finished difference Result 2592 states and 11875 transitions. [2021-10-07 15:21:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:21:54,626 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:21:54,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:54,639 INFO L225 Difference]: With dead ends: 2592 [2021-10-07 15:21:54,639 INFO L226 Difference]: Without dead ends: 2566 [2021-10-07 15:21:54,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 956.9ms TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:21:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-10-07 15:21:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1818. [2021-10-07 15:21:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 5.001100715465053) internal successors, (9087), 1817 states have internal predecessors, (9087), 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) [2021-10-07 15:21:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 9087 transitions. [2021-10-07 15:21:54,725 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 9087 transitions. Word has length 24 [2021-10-07 15:21:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:54,725 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 9087 transitions. [2021-10-07 15:21:54,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-10-07 15:21:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 9087 transitions. [2021-10-07 15:21:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:54,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:54,733 INFO L512 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] [2021-10-07 15:21:54,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-07 15:21:54,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:54,947 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:54,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1678136630, now seen corresponding path program 5 times [2021-10-07 15:21:54,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:54,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296482677] [2021-10-07 15:21:54,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:21:54,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:54,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:54,951 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:54,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:21:55,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:21:55,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:55,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:55,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:55,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:55,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:55,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296482677] [2021-10-07 15:21:55,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296482677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:55,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:55,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:21:55,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954628237] [2021-10-07 15:21:55,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:21:55,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:21:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:55,627 INFO L87 Difference]: Start difference. First operand 1818 states and 9087 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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) [2021-10-07 15:21:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:56,126 INFO L93 Difference]: Finished difference Result 2504 states and 11846 transitions. [2021-10-07 15:21:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:21:56,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:21:56,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:56,142 INFO L225 Difference]: With dead ends: 2504 [2021-10-07 15:21:56,142 INFO L226 Difference]: Without dead ends: 2504 [2021-10-07 15:21:56,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.4ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:21:56,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2021-10-07 15:21:56,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1706. [2021-10-07 15:21:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 4.971847507331378) internal successors, (8477), 1705 states have internal predecessors, (8477), 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) [2021-10-07 15:21:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 8477 transitions. [2021-10-07 15:21:56,227 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 8477 transitions. Word has length 24 [2021-10-07 15:21:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:56,227 INFO L470 AbstractCegarLoop]: Abstraction has 1706 states and 8477 transitions. [2021-10-07 15:21:56,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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) [2021-10-07 15:21:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 8477 transitions. [2021-10-07 15:21:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:56,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:56,234 INFO L512 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] [2021-10-07 15:21:56,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:56,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:56,448 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:56,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2039224982, now seen corresponding path program 6 times [2021-10-07 15:21:56,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:56,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217402192] [2021-10-07 15:21:56,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:21:56,450 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:56,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:56,452 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:56,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:21:56,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:21:56,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:56,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:21:56,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:57,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:57,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:57,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217402192] [2021-10-07 15:21:57,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217402192] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:57,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:57,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:21:57,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203783174] [2021-10-07 15:21:57,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:21:57,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:21:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:21:57,395 INFO L87 Difference]: Start difference. First operand 1706 states and 8477 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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) [2021-10-07 15:21:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:58,424 INFO L93 Difference]: Finished difference Result 2606 states and 11933 transitions. [2021-10-07 15:21:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:21:58,425 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:21:58,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:58,440 INFO L225 Difference]: With dead ends: 2606 [2021-10-07 15:21:58,441 INFO L226 Difference]: Without dead ends: 2546 [2021-10-07 15:21:58,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 442.9ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:21:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-10-07 15:21:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1838. [2021-10-07 15:21:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1837 states have (on average 5.013609145345672) internal successors, (9210), 1837 states have internal predecessors, (9210), 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) [2021-10-07 15:21:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 9210 transitions. [2021-10-07 15:21:58,578 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 9210 transitions. Word has length 24 [2021-10-07 15:21:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:58,579 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 9210 transitions. [2021-10-07 15:21:58,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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) [2021-10-07 15:21:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 9210 transitions. [2021-10-07 15:21:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:58,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:58,588 INFO L512 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] [2021-10-07 15:21:58,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:58,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:58,801 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:58,802 INFO L82 PathProgramCache]: Analyzing trace with hash -283118868, now seen corresponding path program 7 times [2021-10-07 15:21:58,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:58,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203004484] [2021-10-07 15:21:58,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:21:58,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:58,804 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:58,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:21:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:59,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:21:59,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:59,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:59,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:59,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203004484] [2021-10-07 15:21:59,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203004484] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:59,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:59,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:21:59,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570547714] [2021-10-07 15:21:59,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:21:59,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:59,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:21:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:21:59,850 INFO L87 Difference]: Start difference. First operand 1838 states and 9210 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 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) [2021-10-07 15:22:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:04,121 INFO L93 Difference]: Finished difference Result 3786 states and 17656 transitions. [2021-10-07 15:22:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:22:04,122 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:22:04,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:04,145 INFO L225 Difference]: With dead ends: 3786 [2021-10-07 15:22:04,146 INFO L226 Difference]: Without dead ends: 3786 [2021-10-07 15:22:04,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1182.1ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:22:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-10-07 15:22:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 2212. [2021-10-07 15:22:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2211 states have (on average 5.091813658977838) internal successors, (11258), 2211 states have internal predecessors, (11258), 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) [2021-10-07 15:22:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 11258 transitions. [2021-10-07 15:22:04,303 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 11258 transitions. Word has length 24 [2021-10-07 15:22:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:04,304 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 11258 transitions. [2021-10-07 15:22:04,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 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) [2021-10-07 15:22:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 11258 transitions. [2021-10-07 15:22:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:04,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:04,314 INFO L512 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] [2021-10-07 15:22:04,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:04,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:04,529 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:04,530 INFO L82 PathProgramCache]: Analyzing trace with hash 69256822, now seen corresponding path program 8 times [2021-10-07 15:22:04,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:04,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599693343] [2021-10-07 15:22:04,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:22:04,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:04,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:04,532 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:04,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:22:04,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:22:04,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:04,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:04,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:05,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:05,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:05,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599693343] [2021-10-07 15:22:05,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599693343] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:05,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:05,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:22:05,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119141614] [2021-10-07 15:22:05,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:22:05,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:22:05,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:22:05,649 INFO L87 Difference]: Start difference. First operand 2212 states and 11258 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 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) [2021-10-07 15:22:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:07,795 INFO L93 Difference]: Finished difference Result 4844 states and 22882 transitions. [2021-10-07 15:22:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:22:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:22:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:07,820 INFO L225 Difference]: With dead ends: 4844 [2021-10-07 15:22:07,820 INFO L226 Difference]: Without dead ends: 4844 [2021-10-07 15:22:07,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1286.3ms TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:22:07,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2021-10-07 15:22:07,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 2714. [2021-10-07 15:22:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 5.193512716549945) internal successors, (14090), 2713 states have internal predecessors, (14090), 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) [2021-10-07 15:22:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 14090 transitions. [2021-10-07 15:22:08,022 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 14090 transitions. Word has length 24 [2021-10-07 15:22:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:08,022 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 14090 transitions. [2021-10-07 15:22:08,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 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) [2021-10-07 15:22:08,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 14090 transitions. [2021-10-07 15:22:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:08,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:08,033 INFO L512 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] [2021-10-07 15:22:08,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:08,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:08,247 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:08,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:08,248 INFO L82 PathProgramCache]: Analyzing trace with hash -914940883, now seen corresponding path program 3 times [2021-10-07 15:22:08,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:08,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399738314] [2021-10-07 15:22:08,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:22:08,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:08,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:08,251 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:08,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:22:08,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:22:08,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:08,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:22:08,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:09,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:09,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:09,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399738314] [2021-10-07 15:22:09,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399738314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:09,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:09,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-07 15:22:09,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159403502] [2021-10-07 15:22:09,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:09,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:09,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:09,828 INFO L87 Difference]: Start difference. First operand 2714 states and 14090 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:12,303 INFO L93 Difference]: Finished difference Result 4778 states and 21944 transitions. [2021-10-07 15:22:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:22:12,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:22:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:12,319 INFO L225 Difference]: With dead ends: 4778 [2021-10-07 15:22:12,319 INFO L226 Difference]: Without dead ends: 4712 [2021-10-07 15:22:12,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1800.8ms TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:22:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2021-10-07 15:22:12,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 2816. [2021-10-07 15:22:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2815 states have (on average 5.1875666074600355) internal successors, (14603), 2815 states have internal predecessors, (14603), 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) [2021-10-07 15:22:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 14603 transitions. [2021-10-07 15:22:12,441 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 14603 transitions. Word has length 24 [2021-10-07 15:22:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:12,476 INFO L470 AbstractCegarLoop]: Abstraction has 2816 states and 14603 transitions. [2021-10-07 15:22:12,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 14603 transitions. [2021-10-07 15:22:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:12,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:12,488 INFO L512 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] [2021-10-07 15:22:12,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:12,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:12,702 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:12,703 INFO L82 PathProgramCache]: Analyzing trace with hash -305310106, now seen corresponding path program 4 times [2021-10-07 15:22:12,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:12,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562447643] [2021-10-07 15:22:12,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:22:12,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:12,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:12,706 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:12,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:22:13,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:22:13,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:13,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:22:13,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:13,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:13,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:13,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562447643] [2021-10-07 15:22:13,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562447643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:13,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:13,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:13,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186270796] [2021-10-07 15:22:13,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:13,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:13,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:13,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:13,527 INFO L87 Difference]: Start difference. First operand 2816 states and 14603 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-10-07 15:22:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:14,611 INFO L93 Difference]: Finished difference Result 6328 states and 28910 transitions. [2021-10-07 15:22:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:22:14,612 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:22:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:14,632 INFO L225 Difference]: With dead ends: 6328 [2021-10-07 15:22:14,632 INFO L226 Difference]: Without dead ends: 6306 [2021-10-07 15:22:14,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 413.5ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:22:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-10-07 15:22:14,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 3324. [2021-10-07 15:22:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3323 states have (on average 5.184471862774601) internal successors, (17228), 3323 states have internal predecessors, (17228), 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) [2021-10-07 15:22:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 17228 transitions. [2021-10-07 15:22:14,821 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 17228 transitions. Word has length 24 [2021-10-07 15:22:14,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:14,822 INFO L470 AbstractCegarLoop]: Abstraction has 3324 states and 17228 transitions. [2021-10-07 15:22:14,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-10-07 15:22:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 17228 transitions. [2021-10-07 15:22:14,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:14,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:14,836 INFO L512 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] [2021-10-07 15:22:14,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:15,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:15,050 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:15,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:15,051 INFO L82 PathProgramCache]: Analyzing trace with hash -22525784, now seen corresponding path program 5 times [2021-10-07 15:22:15,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:15,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074022402] [2021-10-07 15:22:15,052 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:22:15,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:15,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:15,053 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:15,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:22:15,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:22:15,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:15,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:22:15,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:15,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:16,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:16,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074022402] [2021-10-07 15:22:16,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074022402] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:16,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:16,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:16,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214833688] [2021-10-07 15:22:16,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:16,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:16,004 INFO L87 Difference]: Start difference. First operand 3324 states and 17228 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-10-07 15:22:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:17,122 INFO L93 Difference]: Finished difference Result 6602 states and 30962 transitions. [2021-10-07 15:22:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:22:17,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:22:17,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:17,145 INFO L225 Difference]: With dead ends: 6602 [2021-10-07 15:22:17,146 INFO L226 Difference]: Without dead ends: 6574 [2021-10-07 15:22:17,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 538.1ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:22:17,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6574 states. [2021-10-07 15:22:17,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6574 to 4038. [2021-10-07 15:22:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4037 states have (on average 5.071340104037652) internal successors, (20473), 4037 states have internal predecessors, (20473), 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) [2021-10-07 15:22:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 20473 transitions. [2021-10-07 15:22:17,304 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 20473 transitions. Word has length 24 [2021-10-07 15:22:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:17,339 INFO L470 AbstractCegarLoop]: Abstraction has 4038 states and 20473 transitions. [2021-10-07 15:22:17,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-10-07 15:22:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 20473 transitions. [2021-10-07 15:22:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:17,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:17,369 INFO L512 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] [2021-10-07 15:22:17,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-07 15:22:17,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:17,584 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:17,584 INFO L82 PathProgramCache]: Analyzing trace with hash -349636307, now seen corresponding path program 6 times [2021-10-07 15:22:17,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:17,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248575306] [2021-10-07 15:22:17,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:22:17,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:17,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:17,587 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:17,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:22:18,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:22:18,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:18,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:22:18,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:18,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:18,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:18,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248575306] [2021-10-07 15:22:18,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248575306] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:18,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:18,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:22:18,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639081055] [2021-10-07 15:22:18,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:18,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:18,416 INFO L87 Difference]: Start difference. First operand 4038 states and 20473 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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) [2021-10-07 15:22:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:19,165 INFO L93 Difference]: Finished difference Result 7308 states and 33632 transitions. [2021-10-07 15:22:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:22:19,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:22:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:19,192 INFO L225 Difference]: With dead ends: 7308 [2021-10-07 15:22:19,193 INFO L226 Difference]: Without dead ends: 7278 [2021-10-07 15:22:19,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 279.8ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:22:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7278 states. [2021-10-07 15:22:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7278 to 4158. [2021-10-07 15:22:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4158 states, 4157 states have (on average 5.117873466442146) internal successors, (21275), 4157 states have internal predecessors, (21275), 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) [2021-10-07 15:22:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 21275 transitions. [2021-10-07 15:22:19,474 INFO L78 Accepts]: Start accepts. Automaton has 4158 states and 21275 transitions. Word has length 24 [2021-10-07 15:22:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:19,474 INFO L470 AbstractCegarLoop]: Abstraction has 4158 states and 21275 transitions. [2021-10-07 15:22:19,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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) [2021-10-07 15:22:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 21275 transitions. [2021-10-07 15:22:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:19,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:19,491 INFO L512 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] [2021-10-07 15:22:19,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:19,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:19,706 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:19,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2116459430, now seen corresponding path program 7 times [2021-10-07 15:22:19,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:19,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805178967] [2021-10-07 15:22:19,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:22:19,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:19,709 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:19,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:22:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:20,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:22:20,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:20,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:20,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:20,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805178967] [2021-10-07 15:22:20,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805178967] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:20,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:20,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:22:20,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322780307] [2021-10-07 15:22:20,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:20,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:20,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:20,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:20,644 INFO L87 Difference]: Start difference. First operand 4158 states and 21275 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 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) [2021-10-07 15:22:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:22,397 INFO L93 Difference]: Finished difference Result 10886 states and 50630 transitions. [2021-10-07 15:22:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:22:22,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:22:22,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:22,457 INFO L225 Difference]: With dead ends: 10886 [2021-10-07 15:22:22,457 INFO L226 Difference]: Without dead ends: 10886 [2021-10-07 15:22:22,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 538.3ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:22:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10886 states. [2021-10-07 15:22:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10886 to 4742. [2021-10-07 15:22:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 4741 states have (on average 5.315756169584476) internal successors, (25202), 4741 states have internal predecessors, (25202), 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) [2021-10-07 15:22:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 25202 transitions. [2021-10-07 15:22:22,803 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 25202 transitions. Word has length 24 [2021-10-07 15:22:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:22,803 INFO L470 AbstractCegarLoop]: Abstraction has 4742 states and 25202 transitions. [2021-10-07 15:22:22,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 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) [2021-10-07 15:22:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 25202 transitions. [2021-10-07 15:22:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:22,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:22,818 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:22,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:23,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:23,019 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:23,020 INFO L82 PathProgramCache]: Analyzing trace with hash 410613253, now seen corresponding path program 9 times [2021-10-07 15:22:23,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:23,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797410091] [2021-10-07 15:22:23,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:22:23,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:23,022 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:23,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:22:23,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:22:23,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:23,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:23,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:24,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:24,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:24,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797410091] [2021-10-07 15:22:24,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797410091] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:24,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:24,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:24,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770323893] [2021-10-07 15:22:24,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:24,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:24,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:24,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:24,532 INFO L87 Difference]: Start difference. First operand 4742 states and 25202 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:22:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:29,326 INFO L93 Difference]: Finished difference Result 5194 states and 26771 transitions. [2021-10-07 15:22:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:29,326 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:22:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:29,347 INFO L225 Difference]: With dead ends: 5194 [2021-10-07 15:22:29,347 INFO L226 Difference]: Without dead ends: 5164 [2021-10-07 15:22:29,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 304.3ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:22:29,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2021-10-07 15:22:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 4818. [2021-10-07 15:22:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4818 states, 4817 states have (on average 5.3072451733444055) internal successors, (25565), 4817 states have internal predecessors, (25565), 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) [2021-10-07 15:22:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 25565 transitions. [2021-10-07 15:22:29,575 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 25565 transitions. Word has length 25 [2021-10-07 15:22:29,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:29,575 INFO L470 AbstractCegarLoop]: Abstraction has 4818 states and 25565 transitions. [2021-10-07 15:22:29,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:22:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 25565 transitions. [2021-10-07 15:22:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:29,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:29,595 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:29,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:29,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:29,809 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:29,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:29,810 INFO L82 PathProgramCache]: Analyzing trace with hash 527155525, now seen corresponding path program 10 times [2021-10-07 15:22:29,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:29,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970134255] [2021-10-07 15:22:29,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:22:29,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:29,813 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:29,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 15:22:30,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:22:30,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:30,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:30,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:32,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:33,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:33,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970134255] [2021-10-07 15:22:33,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970134255] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:33,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:33,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:33,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788241598] [2021-10-07 15:22:33,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:33,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:33,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:33,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:22:33,157 INFO L87 Difference]: Start difference. First operand 4818 states and 25565 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:22:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:40,019 INFO L93 Difference]: Finished difference Result 5468 states and 27841 transitions. [2021-10-07 15:22:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:40,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:22:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:40,038 INFO L225 Difference]: With dead ends: 5468 [2021-10-07 15:22:40,039 INFO L226 Difference]: Without dead ends: 5438 [2021-10-07 15:22:40,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6293.4ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:22:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5438 states. [2021-10-07 15:22:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5438 to 4948. [2021-10-07 15:22:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 5.312512633919547) internal successors, (26281), 4947 states have internal predecessors, (26281), 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) [2021-10-07 15:22:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 26281 transitions. [2021-10-07 15:22:40,229 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 26281 transitions. Word has length 25 [2021-10-07 15:22:40,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:40,229 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 26281 transitions. [2021-10-07 15:22:40,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:22:40,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 26281 transitions. [2021-10-07 15:22:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:40,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:40,243 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:40,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-07 15:22:40,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:40,444 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:40,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:40,445 INFO L82 PathProgramCache]: Analyzing trace with hash 525223925, now seen corresponding path program 11 times [2021-10-07 15:22:40,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:40,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713512734] [2021-10-07 15:22:40,446 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:22:40,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:40,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:40,448 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:40,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 15:22:40,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:22:40,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:40,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:40,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:43,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:43,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:43,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713512734] [2021-10-07 15:22:43,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713512734] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:43,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:43,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:43,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005361969] [2021-10-07 15:22:43,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:43,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:22:43,788 INFO L87 Difference]: Start difference. First operand 4948 states and 26281 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:22:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:48,568 INFO L93 Difference]: Finished difference Result 5406 states and 27639 transitions. [2021-10-07 15:22:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:22:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:48,593 INFO L225 Difference]: With dead ends: 5406 [2021-10-07 15:22:48,593 INFO L226 Difference]: Without dead ends: 5376 [2021-10-07 15:22:48,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6299.5ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:22:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2021-10-07 15:22:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 4934. [2021-10-07 15:22:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 5.311372390026353) internal successors, (26201), 4933 states have internal predecessors, (26201), 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) [2021-10-07 15:22:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 26201 transitions. [2021-10-07 15:22:48,793 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 26201 transitions. Word has length 25 [2021-10-07 15:22:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:48,793 INFO L470 AbstractCegarLoop]: Abstraction has 4934 states and 26201 transitions. [2021-10-07 15:22:48,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:22:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 26201 transitions. [2021-10-07 15:22:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:48,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:48,810 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:48,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-07 15:22:49,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:49,011 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:49,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2103478267, now seen corresponding path program 12 times [2021-10-07 15:22:49,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:49,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506269137] [2021-10-07 15:22:49,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:22:49,014 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:49,015 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:49,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 15:22:49,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:22:49,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:49,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:49,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:50,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:50,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:50,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506269137] [2021-10-07 15:22:50,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506269137] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:50,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:50,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:50,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170444090] [2021-10-07 15:22:50,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:50,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:50,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:50,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:50,592 INFO L87 Difference]: Start difference. First operand 4934 states and 26201 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:22:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:53,552 INFO L93 Difference]: Finished difference Result 5558 states and 28486 transitions. [2021-10-07 15:22:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:53,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:22:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:53,572 INFO L225 Difference]: With dead ends: 5558 [2021-10-07 15:22:53,572 INFO L226 Difference]: Without dead ends: 5528 [2021-10-07 15:22:53,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 297.9ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:22:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5528 states. [2021-10-07 15:22:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5528 to 5154. [2021-10-07 15:22:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 5153 states have (on average 5.294391616534058) internal successors, (27282), 5153 states have internal predecessors, (27282), 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) [2021-10-07 15:22:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 27282 transitions. [2021-10-07 15:22:53,725 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 27282 transitions. Word has length 25 [2021-10-07 15:22:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:53,725 INFO L470 AbstractCegarLoop]: Abstraction has 5154 states and 27282 transitions. [2021-10-07 15:22:53,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:22:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 27282 transitions. [2021-10-07 15:22:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:53,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:53,745 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:53,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:53,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:53,946 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:53,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1123954810, now seen corresponding path program 13 times [2021-10-07 15:22:53,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:53,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320047575] [2021-10-07 15:22:53,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:22:53,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:53,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:53,950 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:53,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 15:22:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:54,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:22:54,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:54,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:55,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:55,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320047575] [2021-10-07 15:22:55,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320047575] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:55,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:55,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-07 15:22:55,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328330253] [2021-10-07 15:22:55,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:22:55,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:22:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:22:55,489 INFO L87 Difference]: Start difference. First operand 5154 states and 27282 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 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) [2021-10-07 15:23:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:00,777 INFO L93 Difference]: Finished difference Result 9276 states and 45972 transitions. [2021-10-07 15:23:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:23:00,778 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:00,811 INFO L225 Difference]: With dead ends: 9276 [2021-10-07 15:23:00,811 INFO L226 Difference]: Without dead ends: 9276 [2021-10-07 15:23:00,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2631.9ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:23:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2021-10-07 15:23:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 6334. [2021-10-07 15:23:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6334 states, 6333 states have (on average 5.4983420180009475) internal successors, (34821), 6333 states have internal predecessors, (34821), 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) [2021-10-07 15:23:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 34821 transitions. [2021-10-07 15:23:01,180 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 34821 transitions. Word has length 25 [2021-10-07 15:23:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:01,180 INFO L470 AbstractCegarLoop]: Abstraction has 6334 states and 34821 transitions. [2021-10-07 15:23:01,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 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) [2021-10-07 15:23:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 34821 transitions. [2021-10-07 15:23:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:01,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:01,202 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:01,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:01,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:01,409 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:01,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2054059062, now seen corresponding path program 8 times [2021-10-07 15:23:01,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:01,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245782348] [2021-10-07 15:23:01,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:01,412 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:01,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:01,413 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:01,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 15:23:02,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:02,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:02,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:23:02,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:02,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:02,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:02,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245782348] [2021-10-07 15:23:02,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245782348] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:02,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:02,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:23:02,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316364438] [2021-10-07 15:23:02,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:23:02,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:02,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:23:02,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:23:02,564 INFO L87 Difference]: Start difference. First operand 6334 states and 34821 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:03,902 INFO L93 Difference]: Finished difference Result 12136 states and 63084 transitions. [2021-10-07 15:23:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:23:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:04,069 INFO L225 Difference]: With dead ends: 12136 [2021-10-07 15:23:04,069 INFO L226 Difference]: Without dead ends: 12056 [2021-10-07 15:23:04,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 680.5ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:23:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12056 states. [2021-10-07 15:23:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12056 to 7538. [2021-10-07 15:23:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7538 states, 7537 states have (on average 5.611649197293353) internal successors, (42295), 7537 states have internal predecessors, (42295), 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) [2021-10-07 15:23:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7538 states to 7538 states and 42295 transitions. [2021-10-07 15:23:04,577 INFO L78 Accepts]: Start accepts. Automaton has 7538 states and 42295 transitions. Word has length 25 [2021-10-07 15:23:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:04,578 INFO L470 AbstractCegarLoop]: Abstraction has 7538 states and 42295 transitions. [2021-10-07 15:23:04,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7538 states and 42295 transitions. [2021-10-07 15:23:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:04,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:04,603 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:04,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:04,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:04,804 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:04,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:04,805 INFO L82 PathProgramCache]: Analyzing trace with hash -65605207, now seen corresponding path program 9 times [2021-10-07 15:23:04,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:04,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634000533] [2021-10-07 15:23:04,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:23:04,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:04,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:04,808 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:04,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 15:23:05,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:23:05,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:05,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:05,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:08,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:08,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:08,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634000533] [2021-10-07 15:23:08,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634000533] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:08,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:08,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:08,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230995756] [2021-10-07 15:23:08,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:08,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:23:08,451 INFO L87 Difference]: Start difference. First operand 7538 states and 42295 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:13,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:13,358 INFO L93 Difference]: Finished difference Result 8448 states and 45395 transitions. [2021-10-07 15:23:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:13,358 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:13,390 INFO L225 Difference]: With dead ends: 8448 [2021-10-07 15:23:13,390 INFO L226 Difference]: Without dead ends: 8398 [2021-10-07 15:23:13,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6307.5ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:23:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2021-10-07 15:23:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 7630. [2021-10-07 15:23:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7630 states, 7629 states have (on average 5.605846113514222) internal successors, (42767), 7629 states have internal predecessors, (42767), 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) [2021-10-07 15:23:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7630 states to 7630 states and 42767 transitions. [2021-10-07 15:23:13,602 INFO L78 Accepts]: Start accepts. Automaton has 7630 states and 42767 transitions. Word has length 25 [2021-10-07 15:23:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:13,602 INFO L470 AbstractCegarLoop]: Abstraction has 7630 states and 42767 transitions. [2021-10-07 15:23:13,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7630 states and 42767 transitions. [2021-10-07 15:23:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:13,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:13,624 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:13,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:13,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:13,825 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:13,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:13,825 INFO L82 PathProgramCache]: Analyzing trace with hash -292454895, now seen corresponding path program 10 times [2021-10-07 15:23:13,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:13,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531893637] [2021-10-07 15:23:13,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:23:13,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:13,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:13,828 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:13,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 15:23:14,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:23:14,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:14,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:14,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:17,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:17,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:17,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531893637] [2021-10-07 15:23:17,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531893637] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:17,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:17,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:17,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060271707] [2021-10-07 15:23:17,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:17,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:17,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:17,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:23:17,389 INFO L87 Difference]: Start difference. First operand 7630 states and 42767 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:22,263 INFO L93 Difference]: Finished difference Result 8296 states and 44737 transitions. [2021-10-07 15:23:22,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:22,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:22,296 INFO L225 Difference]: With dead ends: 8296 [2021-10-07 15:23:22,297 INFO L226 Difference]: Without dead ends: 8232 [2021-10-07 15:23:22,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6329.9ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:23:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8232 states. [2021-10-07 15:23:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8232 to 7594. [2021-10-07 15:23:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 5.602001843803503) internal successors, (42536), 7593 states have internal predecessors, (42536), 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) [2021-10-07 15:23:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 42536 transitions. [2021-10-07 15:23:22,587 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 42536 transitions. Word has length 25 [2021-10-07 15:23:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:22,587 INFO L470 AbstractCegarLoop]: Abstraction has 7594 states and 42536 transitions. [2021-10-07 15:23:22,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:22,587 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 42536 transitions. [2021-10-07 15:23:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:22,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:22,609 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:22,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:22,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:22,810 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:22,811 INFO L82 PathProgramCache]: Analyzing trace with hash -163372176, now seen corresponding path program 11 times [2021-10-07 15:23:22,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:22,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899047467] [2021-10-07 15:23:22,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:23:22,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:22,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:22,814 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:22,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 15:23:23,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:23:23,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:23:23,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:23,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:23,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:23,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899047467] [2021-10-07 15:23:23,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899047467] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:23,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:23,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:23:23,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797279499] [2021-10-07 15:23:23,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:23:23,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:23:23,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:23,809 INFO L87 Difference]: Start difference. First operand 7594 states and 42536 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-10-07 15:23:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:25,082 INFO L93 Difference]: Finished difference Result 11212 states and 57756 transitions. [2021-10-07 15:23:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:23:25,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:25,146 INFO L225 Difference]: With dead ends: 11212 [2021-10-07 15:23:25,147 INFO L226 Difference]: Without dead ends: 11212 [2021-10-07 15:23:25,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 317.2ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:23:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11212 states. [2021-10-07 15:23:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11212 to 7594. [2021-10-07 15:23:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 5.582246806268932) internal successors, (42386), 7593 states have internal predecessors, (42386), 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) [2021-10-07 15:23:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 42386 transitions. [2021-10-07 15:23:25,458 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 42386 transitions. Word has length 25 [2021-10-07 15:23:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:25,458 INFO L470 AbstractCegarLoop]: Abstraction has 7594 states and 42386 transitions. [2021-10-07 15:23:25,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-10-07 15:23:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 42386 transitions. [2021-10-07 15:23:25,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:25,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:25,564 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:25,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:25,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:25,765 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:25,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:25,766 INFO L82 PathProgramCache]: Analyzing trace with hash -258747379, now seen corresponding path program 12 times [2021-10-07 15:23:25,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:25,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423280515] [2021-10-07 15:23:25,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:23:25,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:25,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:25,769 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:25,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 15:23:26,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:23:26,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:26,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:26,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:27,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:27,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:27,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423280515] [2021-10-07 15:23:27,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423280515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:27,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:27,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:27,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060915690] [2021-10-07 15:23:27,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:27,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:27,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:27,413 INFO L87 Difference]: Start difference. First operand 7594 states and 42386 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:36,179 INFO L93 Difference]: Finished difference Result 8208 states and 44610 transitions. [2021-10-07 15:23:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:23:36,180 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:36,212 INFO L225 Difference]: With dead ends: 8208 [2021-10-07 15:23:36,212 INFO L226 Difference]: Without dead ends: 8158 [2021-10-07 15:23:36,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 261.8ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2021-10-07 15:23:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 7764. [2021-10-07 15:23:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7764 states, 7763 states have (on average 5.5700115934561385) internal successors, (43240), 7763 states have internal predecessors, (43240), 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) [2021-10-07 15:23:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7764 states to 7764 states and 43240 transitions. [2021-10-07 15:23:36,552 INFO L78 Accepts]: Start accepts. Automaton has 7764 states and 43240 transitions. Word has length 25 [2021-10-07 15:23:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:36,552 INFO L470 AbstractCegarLoop]: Abstraction has 7764 states and 43240 transitions. [2021-10-07 15:23:36,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7764 states and 43240 transitions. [2021-10-07 15:23:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:36,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:36,591 INFO L512 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] [2021-10-07 15:23:36,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:36,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:36,805 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:36,806 INFO L82 PathProgramCache]: Analyzing trace with hash -358620475, now seen corresponding path program 1 times [2021-10-07 15:23:36,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:36,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246572593] [2021-10-07 15:23:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:36,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:36,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:36,808 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:36,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 15:23:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:37,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:37,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:38,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:38,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:38,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246572593] [2021-10-07 15:23:38,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246572593] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:38,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:38,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:38,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192044916] [2021-10-07 15:23:38,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:38,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:38,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:38,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:38,379 INFO L87 Difference]: Start difference. First operand 7764 states and 43240 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:39,149 INFO L93 Difference]: Finished difference Result 8994 states and 48391 transitions. [2021-10-07 15:23:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:39,186 INFO L225 Difference]: With dead ends: 8994 [2021-10-07 15:23:39,186 INFO L226 Difference]: Without dead ends: 8908 [2021-10-07 15:23:39,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 287.0ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8908 states. [2021-10-07 15:23:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8908 to 8094. [2021-10-07 15:23:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8094 states, 8093 states have (on average 5.591375262572593) internal successors, (45251), 8093 states have internal predecessors, (45251), 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) [2021-10-07 15:23:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8094 states to 8094 states and 45251 transitions. [2021-10-07 15:23:39,551 INFO L78 Accepts]: Start accepts. Automaton has 8094 states and 45251 transitions. Word has length 25 [2021-10-07 15:23:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:39,551 INFO L470 AbstractCegarLoop]: Abstraction has 8094 states and 45251 transitions. [2021-10-07 15:23:39,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 8094 states and 45251 transitions. [2021-10-07 15:23:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:39,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:39,581 INFO L512 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] [2021-10-07 15:23:39,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:39,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:39,795 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash -348593915, now seen corresponding path program 2 times [2021-10-07 15:23:39,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:39,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394700663] [2021-10-07 15:23:39,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:39,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:39,798 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:39,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 15:23:40,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:40,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:40,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:40,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:41,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:41,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:41,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394700663] [2021-10-07 15:23:41,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394700663] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:41,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:41,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:41,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977820580] [2021-10-07 15:23:41,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:41,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:41,610 INFO L87 Difference]: Start difference. First operand 8094 states and 45251 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:42,125 INFO L93 Difference]: Finished difference Result 9408 states and 50732 transitions. [2021-10-07 15:23:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:42,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:42,163 INFO L225 Difference]: With dead ends: 9408 [2021-10-07 15:23:42,163 INFO L226 Difference]: Without dead ends: 9318 [2021-10-07 15:23:42,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 281.1ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2021-10-07 15:23:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 8414. [2021-10-07 15:23:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8414 states, 8413 states have (on average 5.606917865208605) internal successors, (47171), 8413 states have internal predecessors, (47171), 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) [2021-10-07 15:23:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8414 states to 8414 states and 47171 transitions. [2021-10-07 15:23:42,429 INFO L78 Accepts]: Start accepts. Automaton has 8414 states and 47171 transitions. Word has length 25 [2021-10-07 15:23:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:42,429 INFO L470 AbstractCegarLoop]: Abstraction has 8414 states and 47171 transitions. [2021-10-07 15:23:42,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 8414 states and 47171 transitions. [2021-10-07 15:23:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:42,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:42,454 INFO L512 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] [2021-10-07 15:23:42,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:42,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:42,655 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:42,656 INFO L82 PathProgramCache]: Analyzing trace with hash 70082437, now seen corresponding path program 3 times [2021-10-07 15:23:42,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:42,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725714147] [2021-10-07 15:23:42,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:23:42,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:42,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:42,658 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:42,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 15:23:43,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:23:43,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:43,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:43,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:44,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:44,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:44,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725714147] [2021-10-07 15:23:44,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725714147] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:44,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:44,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:44,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208960702] [2021-10-07 15:23:44,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:44,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:44,549 INFO L87 Difference]: Start difference. First operand 8414 states and 47171 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:45,365 INFO L93 Difference]: Finished difference Result 9970 states and 53840 transitions. [2021-10-07 15:23:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:23:45,366 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:45,406 INFO L225 Difference]: With dead ends: 9970 [2021-10-07 15:23:45,406 INFO L226 Difference]: Without dead ends: 9876 [2021-10-07 15:23:45,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 283.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2021-10-07 15:23:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 8646. [2021-10-07 15:23:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8646 states, 8645 states have (on average 5.633661075766339) internal successors, (48703), 8645 states have internal predecessors, (48703), 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) [2021-10-07 15:23:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 48703 transitions. [2021-10-07 15:23:45,795 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 48703 transitions. Word has length 25 [2021-10-07 15:23:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:45,795 INFO L470 AbstractCegarLoop]: Abstraction has 8646 states and 48703 transitions. [2021-10-07 15:23:45,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 48703 transitions. [2021-10-07 15:23:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:45,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:45,819 INFO L512 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] [2021-10-07 15:23:45,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-07 15:23:46,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:46,020 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash -665458875, now seen corresponding path program 4 times [2021-10-07 15:23:46,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:46,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628914448] [2021-10-07 15:23:46,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:23:46,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:46,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:46,023 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:46,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 15:23:46,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:23:46,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:46,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:46,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:47,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:47,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:47,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628914448] [2021-10-07 15:23:47,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628914448] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:47,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:47,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:47,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179595297] [2021-10-07 15:23:47,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:47,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:47,663 INFO L87 Difference]: Start difference. First operand 8646 states and 48703 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:48,254 INFO L93 Difference]: Finished difference Result 9432 states and 51940 transitions. [2021-10-07 15:23:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:23:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:48,294 INFO L225 Difference]: With dead ends: 9432 [2021-10-07 15:23:48,294 INFO L226 Difference]: Without dead ends: 9330 [2021-10-07 15:23:48,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 294.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:48,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9330 states. [2021-10-07 15:23:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9330 to 8936. [2021-10-07 15:23:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8936 states, 8935 states have (on average 5.63335198656967) internal successors, (50334), 8935 states have internal predecessors, (50334), 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) [2021-10-07 15:23:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8936 states to 8936 states and 50334 transitions. [2021-10-07 15:23:48,643 INFO L78 Accepts]: Start accepts. Automaton has 8936 states and 50334 transitions. Word has length 25 [2021-10-07 15:23:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:48,644 INFO L470 AbstractCegarLoop]: Abstraction has 8936 states and 50334 transitions. [2021-10-07 15:23:48,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 8936 states and 50334 transitions. [2021-10-07 15:23:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:48,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:48,669 INFO L512 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] [2021-10-07 15:23:48,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:48,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:48,870 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:48,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1465809093, now seen corresponding path program 5 times [2021-10-07 15:23:48,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:48,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743677816] [2021-10-07 15:23:48,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:23:48,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:48,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:48,874 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:48,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 15:23:49,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:49,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:49,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:49,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:50,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:50,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:50,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743677816] [2021-10-07 15:23:50,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743677816] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:50,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:50,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:50,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549666361] [2021-10-07 15:23:50,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:50,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:50,475 INFO L87 Difference]: Start difference. First operand 8936 states and 50334 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:51,581 INFO L93 Difference]: Finished difference Result 10618 states and 57510 transitions. [2021-10-07 15:23:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:23:51,582 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:51,624 INFO L225 Difference]: With dead ends: 10618 [2021-10-07 15:23:51,624 INFO L226 Difference]: Without dead ends: 10512 [2021-10-07 15:23:51,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 282.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:51,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10512 states. [2021-10-07 15:23:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10512 to 9212. [2021-10-07 15:23:51,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9212 states, 9211 states have (on average 5.654434914775812) internal successors, (52083), 9211 states have internal predecessors, (52083), 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) [2021-10-07 15:23:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9212 states to 9212 states and 52083 transitions. [2021-10-07 15:23:52,136 INFO L78 Accepts]: Start accepts. Automaton has 9212 states and 52083 transitions. Word has length 25 [2021-10-07 15:23:52,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:52,137 INFO L470 AbstractCegarLoop]: Abstraction has 9212 states and 52083 transitions. [2021-10-07 15:23:52,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 9212 states and 52083 transitions. [2021-10-07 15:23:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:52,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:52,165 INFO L512 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] [2021-10-07 15:23:52,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:52,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:52,366 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:52,367 INFO L82 PathProgramCache]: Analyzing trace with hash 380130693, now seen corresponding path program 6 times [2021-10-07 15:23:52,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:52,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149254653] [2021-10-07 15:23:52,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:23:52,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:52,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:52,370 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:52,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 15:23:53,264 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:23:53,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:53,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:53,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:53,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:54,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:54,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149254653] [2021-10-07 15:23:54,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149254653] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:54,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:54,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:54,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873844304] [2021-10-07 15:23:54,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:54,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:54,184 INFO L87 Difference]: Start difference. First operand 9212 states and 52083 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:54,722 INFO L93 Difference]: Finished difference Result 10088 states and 55705 transitions. [2021-10-07 15:23:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:23:54,723 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:54,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:54,764 INFO L225 Difference]: With dead ends: 10088 [2021-10-07 15:23:54,764 INFO L226 Difference]: Without dead ends: 9990 [2021-10-07 15:23:54,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 277.3ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9990 states. [2021-10-07 15:23:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9990 to 9450. [2021-10-07 15:23:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9450 states, 9449 states have (on average 5.655201608635834) internal successors, (53436), 9449 states have internal predecessors, (53436), 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) [2021-10-07 15:23:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9450 states to 9450 states and 53436 transitions. [2021-10-07 15:23:55,264 INFO L78 Accepts]: Start accepts. Automaton has 9450 states and 53436 transitions. Word has length 25 [2021-10-07 15:23:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:55,264 INFO L470 AbstractCegarLoop]: Abstraction has 9450 states and 53436 transitions. [2021-10-07 15:23:55,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 9450 states and 53436 transitions. [2021-10-07 15:23:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:55,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:55,294 INFO L512 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] [2021-10-07 15:23:55,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:55,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:55,495 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:55,496 INFO L82 PathProgramCache]: Analyzing trace with hash -575490017, now seen corresponding path program 7 times [2021-10-07 15:23:55,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:55,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799303518] [2021-10-07 15:23:55,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:23:55,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:55,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:55,499 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:55,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 15:23:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:56,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:56,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:56,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:57,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:57,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799303518] [2021-10-07 15:23:57,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799303518] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:57,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:57,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:57,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342833645] [2021-10-07 15:23:57,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:57,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:57,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:57,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:57,185 INFO L87 Difference]: Start difference. First operand 9450 states and 53436 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:57,952 INFO L93 Difference]: Finished difference Result 10664 states and 58444 transitions. [2021-10-07 15:23:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:57,953 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:23:57,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:58,005 INFO L225 Difference]: With dead ends: 10664 [2021-10-07 15:23:58,006 INFO L226 Difference]: Without dead ends: 10578 [2021-10-07 15:23:58,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 290.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2021-10-07 15:23:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 9662. [2021-10-07 15:23:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9662 states, 9661 states have (on average 5.673636269537315) internal successors, (54813), 9661 states have internal predecessors, (54813), 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) [2021-10-07 15:23:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9662 states to 9662 states and 54813 transitions. [2021-10-07 15:23:58,377 INFO L78 Accepts]: Start accepts. Automaton has 9662 states and 54813 transitions. Word has length 25 [2021-10-07 15:23:58,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:58,377 INFO L470 AbstractCegarLoop]: Abstraction has 9662 states and 54813 transitions. [2021-10-07 15:23:58,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:23:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 9662 states and 54813 transitions. [2021-10-07 15:23:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:58,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:58,409 INFO L512 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] [2021-10-07 15:23:58,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:58,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:58,610 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash -565463457, now seen corresponding path program 8 times [2021-10-07 15:23:58,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:58,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720196880] [2021-10-07 15:23:58,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:58,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:58,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:58,614 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:58,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-07 15:23:59,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:59,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:59,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:59,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:00,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:00,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:00,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720196880] [2021-10-07 15:24:00,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720196880] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:00,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:00,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:00,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672336683] [2021-10-07 15:24:00,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:00,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:00,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:00,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:00,750 INFO L87 Difference]: Start difference. First operand 9662 states and 54813 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:02,054 INFO L93 Difference]: Finished difference Result 10990 states and 60290 transitions. [2021-10-07 15:24:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:24:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:02,222 INFO L225 Difference]: With dead ends: 10990 [2021-10-07 15:24:02,222 INFO L226 Difference]: Without dead ends: 10900 [2021-10-07 15:24:02,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 328.1ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:02,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10900 states. [2021-10-07 15:24:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10900 to 9850. [2021-10-07 15:24:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9850 states, 9849 states have (on average 5.694588283074424) internal successors, (56086), 9849 states have internal predecessors, (56086), 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) [2021-10-07 15:24:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 56086 transitions. [2021-10-07 15:24:02,525 INFO L78 Accepts]: Start accepts. Automaton has 9850 states and 56086 transitions. Word has length 25 [2021-10-07 15:24:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:02,525 INFO L470 AbstractCegarLoop]: Abstraction has 9850 states and 56086 transitions. [2021-10-07 15:24:02,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9850 states and 56086 transitions. [2021-10-07 15:24:02,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:02,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:02,555 INFO L512 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] [2021-10-07 15:24:02,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:02,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:02,756 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:02,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:02,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1969494405, now seen corresponding path program 9 times [2021-10-07 15:24:02,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:02,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057937731] [2021-10-07 15:24:02,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:24:02,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:02,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:02,760 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:02,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-07 15:24:03,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:24:03,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:03,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:03,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:04,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:04,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:04,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057937731] [2021-10-07 15:24:04,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057937731] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:04,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:04,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:04,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468693860] [2021-10-07 15:24:04,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:04,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:04,757 INFO L87 Difference]: Start difference. First operand 9850 states and 56086 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:05,442 INFO L93 Difference]: Finished difference Result 11472 states and 62910 transitions. [2021-10-07 15:24:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:24:05,442 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:05,489 INFO L225 Difference]: With dead ends: 11472 [2021-10-07 15:24:05,489 INFO L226 Difference]: Without dead ends: 11378 [2021-10-07 15:24:05,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 275.0ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:05,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11378 states. [2021-10-07 15:24:05,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11378 to 10060. [2021-10-07 15:24:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10060 states, 10059 states have (on average 5.714385127746297) internal successors, (57481), 10059 states have internal predecessors, (57481), 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) [2021-10-07 15:24:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10060 states to 10060 states and 57481 transitions. [2021-10-07 15:24:05,884 INFO L78 Accepts]: Start accepts. Automaton has 10060 states and 57481 transitions. Word has length 25 [2021-10-07 15:24:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:05,885 INFO L470 AbstractCegarLoop]: Abstraction has 10060 states and 57481 transitions. [2021-10-07 15:24:05,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 10060 states and 57481 transitions. [2021-10-07 15:24:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:05,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:05,912 INFO L512 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] [2021-10-07 15:24:05,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:06,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:06,113 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:06,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:06,114 INFO L82 PathProgramCache]: Analyzing trace with hash -2136701371, now seen corresponding path program 10 times [2021-10-07 15:24:06,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:06,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764953596] [2021-10-07 15:24:06,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:24:06,115 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:06,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:06,116 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:06,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-07 15:24:06,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:24:06,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:06,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:06,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:07,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:07,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:07,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764953596] [2021-10-07 15:24:07,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764953596] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:07,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:07,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:07,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804030228] [2021-10-07 15:24:07,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:07,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:07,982 INFO L87 Difference]: Start difference. First operand 10060 states and 57481 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:08,686 INFO L93 Difference]: Finished difference Result 10934 states and 60967 transitions. [2021-10-07 15:24:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:24:08,686 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:08,740 INFO L225 Difference]: With dead ends: 10934 [2021-10-07 15:24:08,740 INFO L226 Difference]: Without dead ends: 10816 [2021-10-07 15:24:08,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 275.3ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10816 states. [2021-10-07 15:24:09,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10816 to 10344. [2021-10-07 15:24:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 10343 states have (on average 5.705694672725515) internal successors, (59014), 10343 states have internal predecessors, (59014), 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) [2021-10-07 15:24:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 59014 transitions. [2021-10-07 15:24:09,292 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 59014 transitions. Word has length 25 [2021-10-07 15:24:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:09,292 INFO L470 AbstractCegarLoop]: Abstraction has 10344 states and 59014 transitions. [2021-10-07 15:24:09,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 59014 transitions. [2021-10-07 15:24:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:09,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:09,325 INFO L512 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] [2021-10-07 15:24:09,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:09,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:09,526 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:09,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:09,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1970873659, now seen corresponding path program 11 times [2021-10-07 15:24:09,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:09,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506942121] [2021-10-07 15:24:09,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:24:09,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:09,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:09,530 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:09,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-07 15:24:10,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:24:10,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:10,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:10,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:10,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:11,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:11,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506942121] [2021-10-07 15:24:11,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506942121] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:11,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:11,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:11,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132454699] [2021-10-07 15:24:11,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:11,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:11,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:11,280 INFO L87 Difference]: Start difference. First operand 10344 states and 59014 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:12,025 INFO L93 Difference]: Finished difference Result 12084 states and 66286 transitions. [2021-10-07 15:24:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:24:12,025 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:12,078 INFO L225 Difference]: With dead ends: 12084 [2021-10-07 15:24:12,078 INFO L226 Difference]: Without dead ends: 11978 [2021-10-07 15:24:12,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 270.4ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:12,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11978 states. [2021-10-07 15:24:12,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11978 to 10584. [2021-10-07 15:24:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10584 states, 10583 states have (on average 5.7212510630256075) internal successors, (60548), 10583 states have internal predecessors, (60548), 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) [2021-10-07 15:24:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10584 states to 10584 states and 60548 transitions. [2021-10-07 15:24:12,581 INFO L78 Accepts]: Start accepts. Automaton has 10584 states and 60548 transitions. Word has length 25 [2021-10-07 15:24:12,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:12,581 INFO L470 AbstractCegarLoop]: Abstraction has 10584 states and 60548 transitions. [2021-10-07 15:24:12,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 10584 states and 60548 transitions. [2021-10-07 15:24:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:12,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:12,622 INFO L512 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] [2021-10-07 15:24:12,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:12,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:12,837 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:12,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1166199173, now seen corresponding path program 12 times [2021-10-07 15:24:12,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:12,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368891779] [2021-10-07 15:24:12,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:24:12,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:12,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:12,840 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:12,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-07 15:24:13,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:24:13,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:14,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:14,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:14,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:14,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:14,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368891779] [2021-10-07 15:24:14,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368891779] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:14,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:14,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:14,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923194142] [2021-10-07 15:24:14,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:14,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:14,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:14,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:14,951 INFO L87 Difference]: Start difference. First operand 10584 states and 60548 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:15,575 INFO L93 Difference]: Finished difference Result 11552 states and 64411 transitions. [2021-10-07 15:24:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:24:15,575 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:15,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:15,625 INFO L225 Difference]: With dead ends: 11552 [2021-10-07 15:24:15,625 INFO L226 Difference]: Without dead ends: 11438 [2021-10-07 15:24:15,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 275.0ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11438 states. [2021-10-07 15:24:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11438 to 10812. [2021-10-07 15:24:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10812 states, 10811 states have (on average 5.717509943575988) internal successors, (61812), 10811 states have internal predecessors, (61812), 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) [2021-10-07 15:24:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10812 states to 10812 states and 61812 transitions. [2021-10-07 15:24:16,017 INFO L78 Accepts]: Start accepts. Automaton has 10812 states and 61812 transitions. Word has length 25 [2021-10-07 15:24:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:16,018 INFO L470 AbstractCegarLoop]: Abstraction has 10812 states and 61812 transitions. [2021-10-07 15:24:16,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 10812 states and 61812 transitions. [2021-10-07 15:24:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:16,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:16,049 INFO L512 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] [2021-10-07 15:24:16,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:16,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:16,258 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash 653062405, now seen corresponding path program 13 times [2021-10-07 15:24:16,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:16,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035769250] [2021-10-07 15:24:16,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:24:16,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:16,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:16,261 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:16,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-07 15:24:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:17,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:17,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:17,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:18,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:18,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035769250] [2021-10-07 15:24:18,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035769250] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:18,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:18,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:18,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717523681] [2021-10-07 15:24:18,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:18,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:18,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:18,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:18,315 INFO L87 Difference]: Start difference. First operand 10812 states and 61812 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:18,958 INFO L93 Difference]: Finished difference Result 12764 states and 70504 transitions. [2021-10-07 15:24:18,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:24:18,959 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:18,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:19,031 INFO L225 Difference]: With dead ends: 12764 [2021-10-07 15:24:19,031 INFO L226 Difference]: Without dead ends: 12656 [2021-10-07 15:24:19,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 271.2ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12656 states. [2021-10-07 15:24:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12656 to 10998. [2021-10-07 15:24:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10998 states, 10997 states have (on average 5.7412021460398295) internal successors, (63136), 10997 states have internal predecessors, (63136), 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) [2021-10-07 15:24:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10998 states to 10998 states and 63136 transitions. [2021-10-07 15:24:19,649 INFO L78 Accepts]: Start accepts. Automaton has 10998 states and 63136 transitions. Word has length 25 [2021-10-07 15:24:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:19,650 INFO L470 AbstractCegarLoop]: Abstraction has 10998 states and 63136 transitions. [2021-10-07 15:24:19,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10998 states and 63136 transitions. [2021-10-07 15:24:19,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:19,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:19,682 INFO L512 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] [2021-10-07 15:24:19,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:19,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:19,888 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1824903941, now seen corresponding path program 14 times [2021-10-07 15:24:19,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:19,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496878534] [2021-10-07 15:24:19,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:24:19,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:19,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:19,891 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:19,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-07 15:24:20,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:24:20,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:21,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:21,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:21,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:21,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:21,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496878534] [2021-10-07 15:24:21,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496878534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:21,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:21,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:21,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045999484] [2021-10-07 15:24:21,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:21,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:21,925 INFO L87 Difference]: Start difference. First operand 10998 states and 63136 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:22,697 INFO L93 Difference]: Finished difference Result 12966 states and 71682 transitions. [2021-10-07 15:24:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:24:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:22,756 INFO L225 Difference]: With dead ends: 12966 [2021-10-07 15:24:22,756 INFO L226 Difference]: Without dead ends: 12840 [2021-10-07 15:24:22,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 275.5ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12840 states. [2021-10-07 15:24:23,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12840 to 11112. [2021-10-07 15:24:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11112 states, 11111 states have (on average 5.769327693276932) internal successors, (64103), 11111 states have internal predecessors, (64103), 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) [2021-10-07 15:24:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 64103 transitions. [2021-10-07 15:24:23,218 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 64103 transitions. Word has length 25 [2021-10-07 15:24:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:23,218 INFO L470 AbstractCegarLoop]: Abstraction has 11112 states and 64103 transitions. [2021-10-07 15:24:23,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 64103 transitions. [2021-10-07 15:24:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:23,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:23,249 INFO L512 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] [2021-10-07 15:24:23,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-07 15:24:23,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:23,450 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2120507973, now seen corresponding path program 15 times [2021-10-07 15:24:23,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:23,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873325677] [2021-10-07 15:24:23,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:24:23,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:23,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:23,454 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:23,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-07 15:24:24,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:24:24,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:24,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:24,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:25,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:25,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:25,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873325677] [2021-10-07 15:24:25,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873325677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:25,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:25,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:25,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279569993] [2021-10-07 15:24:25,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:25,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:25,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:25,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:25,653 INFO L87 Difference]: Start difference. First operand 11112 states and 64103 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:26,536 INFO L93 Difference]: Finished difference Result 13332 states and 73924 transitions. [2021-10-07 15:24:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:24:26,537 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:26,595 INFO L225 Difference]: With dead ends: 13332 [2021-10-07 15:24:26,595 INFO L226 Difference]: Without dead ends: 13222 [2021-10-07 15:24:26,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 411.8ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:26,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13222 states. [2021-10-07 15:24:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13222 to 11376. [2021-10-07 15:24:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11376 states, 11375 states have (on average 5.790065934065934) internal successors, (65862), 11375 states have internal predecessors, (65862), 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) [2021-10-07 15:24:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11376 states to 11376 states and 65862 transitions. [2021-10-07 15:24:27,148 INFO L78 Accepts]: Start accepts. Automaton has 11376 states and 65862 transitions. Word has length 25 [2021-10-07 15:24:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:27,149 INFO L470 AbstractCegarLoop]: Abstraction has 11376 states and 65862 transitions. [2021-10-07 15:24:27,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 11376 states and 65862 transitions. [2021-10-07 15:24:27,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:27,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:27,187 INFO L512 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] [2021-10-07 15:24:27,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-07 15:24:27,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:27,388 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:27,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:27,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1050767685, now seen corresponding path program 16 times [2021-10-07 15:24:27,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:27,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039813143] [2021-10-07 15:24:27,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:24:27,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:27,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:27,393 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:27,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-07 15:24:28,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:24:28,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:28,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:28,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:29,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:29,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:29,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039813143] [2021-10-07 15:24:29,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039813143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:29,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:29,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:29,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877869737] [2021-10-07 15:24:29,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:29,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:29,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:29,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:29,419 INFO L87 Difference]: Start difference. First operand 11376 states and 65862 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:30,505 INFO L93 Difference]: Finished difference Result 13612 states and 75478 transitions. [2021-10-07 15:24:30,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:24:30,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:24:30,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:30,565 INFO L225 Difference]: With dead ends: 13612 [2021-10-07 15:24:30,565 INFO L226 Difference]: Without dead ends: 13484 [2021-10-07 15:24:30,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 294.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13484 states. [2021-10-07 15:24:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13484 to 11532. [2021-10-07 15:24:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 11531 states have (on average 5.8214378631515045) internal successors, (67127), 11531 states have internal predecessors, (67127), 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) [2021-10-07 15:24:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 67127 transitions. [2021-10-07 15:24:31,059 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 67127 transitions. Word has length 25 [2021-10-07 15:24:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:31,060 INFO L470 AbstractCegarLoop]: Abstraction has 11532 states and 67127 transitions. [2021-10-07 15:24:31,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 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) [2021-10-07 15:24:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 67127 transitions. [2021-10-07 15:24:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:24:31,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:31,095 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:31,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:31,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:31,296 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:31,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:31,297 INFO L82 PathProgramCache]: Analyzing trace with hash -357013505, now seen corresponding path program 14 times [2021-10-07 15:24:31,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:31,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469354074] [2021-10-07 15:24:31,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:24:31,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:31,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:31,300 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:31,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-07 15:24:32,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:24:32,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:32,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:24:32,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:32,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:33,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:33,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469354074] [2021-10-07 15:24:33,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469354074] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:33,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:33,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-07 15:24:33,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570936891] [2021-10-07 15:24:33,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:24:33,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:24:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:24:33,365 INFO L87 Difference]: Start difference. First operand 11532 states and 67127 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:36,176 INFO L93 Difference]: Finished difference Result 14798 states and 81253 transitions. [2021-10-07 15:24:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:24:36,177 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:24:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:36,250 INFO L225 Difference]: With dead ends: 14798 [2021-10-07 15:24:36,250 INFO L226 Difference]: Without dead ends: 14762 [2021-10-07 15:24:36,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1511.1ms TimeCoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:24:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14762 states. [2021-10-07 15:24:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14762 to 12312. [2021-10-07 15:24:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12312 states, 12311 states have (on average 5.773292177727236) internal successors, (71075), 12311 states have internal predecessors, (71075), 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) [2021-10-07 15:24:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12312 states to 12312 states and 71075 transitions. [2021-10-07 15:24:36,841 INFO L78 Accepts]: Start accepts. Automaton has 12312 states and 71075 transitions. Word has length 26 [2021-10-07 15:24:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:36,841 INFO L470 AbstractCegarLoop]: Abstraction has 12312 states and 71075 transitions. [2021-10-07 15:24:36,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12312 states and 71075 transitions. [2021-10-07 15:24:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:24:36,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:36,879 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:36,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-07 15:24:37,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:37,080 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:37,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:37,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1153781041, now seen corresponding path program 15 times [2021-10-07 15:24:37,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:37,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109979194] [2021-10-07 15:24:37,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:24:37,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:37,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:37,083 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:37,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-07 15:24:38,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:24:38,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:38,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:24:38,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:38,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:39,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:39,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109979194] [2021-10-07 15:24:39,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109979194] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:39,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:39,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-07 15:24:39,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693733398] [2021-10-07 15:24:39,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:24:39,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:24:39,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:24:39,261 INFO L87 Difference]: Start difference. First operand 12312 states and 71075 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:52,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:52,324 INFO L93 Difference]: Finished difference Result 17470 states and 94275 transitions. [2021-10-07 15:24:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:24:52,324 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:24:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:52,401 INFO L225 Difference]: With dead ends: 17470 [2021-10-07 15:24:52,401 INFO L226 Difference]: Without dead ends: 17446 [2021-10-07 15:24:52,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2695.4ms TimeCoverageRelationStatistics Valid=259, Invalid=1633, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:24:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17446 states. [2021-10-07 15:24:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17446 to 13092. [2021-10-07 15:24:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13092 states, 13091 states have (on average 5.786418149873959) internal successors, (75750), 13091 states have internal predecessors, (75750), 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) [2021-10-07 15:24:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13092 states to 13092 states and 75750 transitions. [2021-10-07 15:24:53,013 INFO L78 Accepts]: Start accepts. Automaton has 13092 states and 75750 transitions. Word has length 26 [2021-10-07 15:24:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:53,013 INFO L470 AbstractCegarLoop]: Abstraction has 13092 states and 75750 transitions. [2021-10-07 15:24:53,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13092 states and 75750 transitions. [2021-10-07 15:24:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:24:53,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:53,227 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:53,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:53,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:53,428 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:53,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1591463423, now seen corresponding path program 16 times [2021-10-07 15:24:53,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:53,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196927386] [2021-10-07 15:24:53,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:24:53,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:53,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:53,431 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:53,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-07 15:24:54,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:24:54,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:54,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:24:54,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:54,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:55,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:55,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196927386] [2021-10-07 15:24:55,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196927386] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:55,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:55,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-07 15:24:55,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186757532] [2021-10-07 15:24:55,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:24:55,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:24:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:24:55,426 INFO L87 Difference]: Start difference. First operand 13092 states and 75750 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:00,846 INFO L93 Difference]: Finished difference Result 19398 states and 103768 transitions. [2021-10-07 15:25:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:25:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:25:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:00,932 INFO L225 Difference]: With dead ends: 19398 [2021-10-07 15:25:00,932 INFO L226 Difference]: Without dead ends: 19372 [2021-10-07 15:25:00,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 2627.4ms TimeCoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:25:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19372 states. [2021-10-07 15:25:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19372 to 13830. [2021-10-07 15:25:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13830 states, 13829 states have (on average 5.798828548702003) internal successors, (80192), 13829 states have internal predecessors, (80192), 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) [2021-10-07 15:25:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13830 states to 13830 states and 80192 transitions. [2021-10-07 15:25:01,593 INFO L78 Accepts]: Start accepts. Automaton has 13830 states and 80192 transitions. Word has length 26 [2021-10-07 15:25:01,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:01,593 INFO L470 AbstractCegarLoop]: Abstraction has 13830 states and 80192 transitions. [2021-10-07 15:25:01,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 13830 states and 80192 transitions. [2021-10-07 15:25:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:25:01,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:01,633 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:01,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:01,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:25:01,843 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:01,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:01,843 INFO L82 PathProgramCache]: Analyzing trace with hash 571641039, now seen corresponding path program 17 times [2021-10-07 15:25:01,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:01,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476692162] [2021-10-07 15:25:01,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:25:01,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:01,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:01,846 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:25:01,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-07 15:25:03,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:25:03,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:03,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:25:03,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:03,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:03,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:03,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476692162] [2021-10-07 15:25:03,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476692162] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:03,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:03,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:25:03,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920637808] [2021-10-07 15:25:03,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:25:03,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:25:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:25:03,956 INFO L87 Difference]: Start difference. First operand 13830 states and 80192 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:06,598 INFO L93 Difference]: Finished difference Result 19938 states and 106787 transitions. [2021-10-07 15:25:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:25:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:25:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:06,691 INFO L225 Difference]: With dead ends: 19938 [2021-10-07 15:25:06,691 INFO L226 Difference]: Without dead ends: 19938 [2021-10-07 15:25:06,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1348.1ms TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:25:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19938 states. [2021-10-07 15:25:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19938 to 14148. [2021-10-07 15:25:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14148 states, 14147 states have (on average 5.810207111048279) internal successors, (82197), 14147 states have internal predecessors, (82197), 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) [2021-10-07 15:25:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14148 states to 14148 states and 82197 transitions. [2021-10-07 15:25:07,448 INFO L78 Accepts]: Start accepts. Automaton has 14148 states and 82197 transitions. Word has length 26 [2021-10-07 15:25:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:07,448 INFO L470 AbstractCegarLoop]: Abstraction has 14148 states and 82197 transitions. [2021-10-07 15:25:07,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14148 states and 82197 transitions. [2021-10-07 15:25:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:25:07,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:07,507 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:07,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:07,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:25:07,715 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:07,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:07,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1989619348, now seen corresponding path program 18 times [2021-10-07 15:25:07,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:07,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689639411] [2021-10-07 15:25:07,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:25:07,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:07,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:07,718 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:25:07,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-07 15:25:09,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:25:09,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:09,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:25:09,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:09,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:10,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:10,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689639411] [2021-10-07 15:25:10,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689639411] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:10,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:10,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:25:10,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205134057] [2021-10-07 15:25:10,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:25:10,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:10,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:25:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:25:10,170 INFO L87 Difference]: Start difference. First operand 14148 states and 82197 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:13,988 INFO L93 Difference]: Finished difference Result 21948 states and 116796 transitions. [2021-10-07 15:25:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:25:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:25:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:14,091 INFO L225 Difference]: With dead ends: 21948 [2021-10-07 15:25:14,091 INFO L226 Difference]: Without dead ends: 21948 [2021-10-07 15:25:14,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1935.9ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:25:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21948 states. [2021-10-07 15:25:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21948 to 14886. [2021-10-07 15:25:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14886 states, 14885 states have (on average 5.8249244205576085) internal successors, (86704), 14885 states have internal predecessors, (86704), 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) [2021-10-07 15:25:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14886 states to 14886 states and 86704 transitions. [2021-10-07 15:25:14,897 INFO L78 Accepts]: Start accepts. Automaton has 14886 states and 86704 transitions. Word has length 26 [2021-10-07 15:25:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:14,897 INFO L470 AbstractCegarLoop]: Abstraction has 14886 states and 86704 transitions. [2021-10-07 15:25:14,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 14886 states and 86704 transitions. [2021-10-07 15:25:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:25:15,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:15,152 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:15,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:15,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:25:15,353 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:15,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1039170369, now seen corresponding path program 19 times [2021-10-07 15:25:15,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:15,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100182745] [2021-10-07 15:25:15,357 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:25:15,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:15,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:15,359 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:25:15,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-07 15:25:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:16,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:25:16,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:18,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:19,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:19,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100182745] [2021-10-07 15:25:19,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100182745] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:19,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:19,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-07 15:25:19,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435757455] [2021-10-07 15:25:19,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:25:19,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:19,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:25:19,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=216, Unknown=1, NotChecked=0, Total=272 [2021-10-07 15:25:19,393 INFO L87 Difference]: Start difference. First operand 14886 states and 86704 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:39,768 INFO L93 Difference]: Finished difference Result 20588 states and 113642 transitions. [2021-10-07 15:25:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:25:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:25:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:39,966 INFO L225 Difference]: With dead ends: 20588 [2021-10-07 15:25:39,966 INFO L226 Difference]: Without dead ends: 20534 [2021-10-07 15:25:39,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 11773.9ms TimeCoverageRelationStatistics Valid=230, Invalid=1028, Unknown=2, NotChecked=0, Total=1260 [2021-10-07 15:25:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20534 states. [2021-10-07 15:25:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20534 to 16196. [2021-10-07 15:25:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16196 states, 16195 states have (on average 5.869712874343933) internal successors, (95060), 16195 states have internal predecessors, (95060), 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) [2021-10-07 15:25:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16196 states to 16196 states and 95060 transitions. [2021-10-07 15:25:40,766 INFO L78 Accepts]: Start accepts. Automaton has 16196 states and 95060 transitions. Word has length 26 [2021-10-07 15:25:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:40,766 INFO L470 AbstractCegarLoop]: Abstraction has 16196 states and 95060 transitions. [2021-10-07 15:25:40,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 16196 states and 95060 transitions. [2021-10-07 15:25:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:25:40,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:40,835 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:40,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:41,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:25:41,042 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:41,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2058992753, now seen corresponding path program 20 times [2021-10-07 15:25:41,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:41,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412081822] [2021-10-07 15:25:41,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:25:41,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:41,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:41,045 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:25:41,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-07 15:25:42,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:25:42,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:42,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:25:42,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:44,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:45,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:45,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412081822] [2021-10-07 15:25:45,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412081822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:45,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:45,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-07 15:25:45,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655084448] [2021-10-07 15:25:45,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:25:45,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:25:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=216, Unknown=1, NotChecked=0, Total=272 [2021-10-07 15:25:45,399 INFO L87 Difference]: Start difference. First operand 16196 states and 95060 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:03,367 INFO L93 Difference]: Finished difference Result 22658 states and 122638 transitions. [2021-10-07 15:26:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:26:03,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:26:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:03,475 INFO L225 Difference]: With dead ends: 22658 [2021-10-07 15:26:03,475 INFO L226 Difference]: Without dead ends: 22644 [2021-10-07 15:26:03,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 12525.0ms TimeCoverageRelationStatistics Valid=263, Invalid=1217, Unknown=2, NotChecked=0, Total=1482 [2021-10-07 15:26:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22644 states. [2021-10-07 15:26:04,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22644 to 16208. [2021-10-07 15:26:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16208 states, 16207 states have (on average 5.874251866477448) internal successors, (95204), 16207 states have internal predecessors, (95204), 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) [2021-10-07 15:26:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16208 states to 16208 states and 95204 transitions. [2021-10-07 15:26:04,210 INFO L78 Accepts]: Start accepts. Automaton has 16208 states and 95204 transitions. Word has length 26 [2021-10-07 15:26:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:04,210 INFO L470 AbstractCegarLoop]: Abstraction has 16208 states and 95204 transitions. [2021-10-07 15:26:04,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 16208 states and 95204 transitions. [2021-10-07 15:26:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:26:04,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:04,260 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:04,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-07 15:26:04,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:26:04,471 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:26:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:04,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1069311435, now seen corresponding path program 21 times [2021-10-07 15:26:04,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:04,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770726552] [2021-10-07 15:26:04,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:26:04,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:04,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:04,474 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:26:04,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-07 15:26:06,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:26:06,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:26:06,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:26:06,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:06,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:06,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:06,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770726552] [2021-10-07 15:26:06,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770726552] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:26:06,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:26:06,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:26:06,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557122806] [2021-10-07 15:26:06,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:26:06,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:26:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:26:06,577 INFO L87 Difference]: Start difference. First operand 16208 states and 95204 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:13,493 INFO L93 Difference]: Finished difference Result 21024 states and 117150 transitions. [2021-10-07 15:26:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:26:13,494 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:26:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:13,594 INFO L225 Difference]: With dead ends: 21024 [2021-10-07 15:26:13,594 INFO L226 Difference]: Without dead ends: 21024 [2021-10-07 15:26:13,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 610.3ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:26:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21024 states. [2021-10-07 15:26:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21024 to 15418. [2021-10-07 15:26:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15418 states, 15417 states have (on average 5.8659272231951745) internal successors, (90435), 15417 states have internal predecessors, (90435), 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) [2021-10-07 15:26:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15418 states to 15418 states and 90435 transitions. [2021-10-07 15:26:14,291 INFO L78 Accepts]: Start accepts. Automaton has 15418 states and 90435 transitions. Word has length 26 [2021-10-07 15:26:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:14,291 INFO L470 AbstractCegarLoop]: Abstraction has 15418 states and 90435 transitions. [2021-10-07 15:26:14,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:14,292 INFO L276 IsEmpty]: Start isEmpty. Operand 15418 states and 90435 transitions. [2021-10-07 15:26:14,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:26:14,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:14,339 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:14,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2021-10-07 15:26:14,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:26:14,540 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:26:14,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:14,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1099049969, now seen corresponding path program 22 times [2021-10-07 15:26:14,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:14,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225577600] [2021-10-07 15:26:14,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:26:14,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:14,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:14,544 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:26:14,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-07 15:26:15,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:26:15,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:26:15,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:26:15,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:16,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:16,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:16,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225577600] [2021-10-07 15:26:16,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225577600] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:26:16,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:26:16,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-07 15:26:16,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655099451] [2021-10-07 15:26:16,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:26:16,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:16,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:26:16,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:26:16,844 INFO L87 Difference]: Start difference. First operand 15418 states and 90435 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:31,282 INFO L93 Difference]: Finished difference Result 20600 states and 114105 transitions. [2021-10-07 15:26:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:26:31,283 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:26:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:31,377 INFO L225 Difference]: With dead ends: 20600 [2021-10-07 15:26:31,377 INFO L226 Difference]: Without dead ends: 20564 [2021-10-07 15:26:31,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3686.4ms TimeCoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:26:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20564 states. [2021-10-07 15:26:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20564 to 16334. [2021-10-07 15:26:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16334 states, 16333 states have (on average 5.9019163656401155) internal successors, (96396), 16333 states have internal predecessors, (96396), 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) [2021-10-07 15:26:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16334 states to 16334 states and 96396 transitions. [2021-10-07 15:26:32,091 INFO L78 Accepts]: Start accepts. Automaton has 16334 states and 96396 transitions. Word has length 26 [2021-10-07 15:26:32,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:32,091 INFO L470 AbstractCegarLoop]: Abstraction has 16334 states and 96396 transitions. [2021-10-07 15:26:32,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 16334 states and 96396 transitions. [2021-10-07 15:26:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:26:32,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:32,138 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:32,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-07 15:26:32,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:26:32,339 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:26:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:32,340 INFO L82 PathProgramCache]: Analyzing trace with hash 626372111, now seen corresponding path program 23 times [2021-10-07 15:26:32,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:32,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665646239] [2021-10-07 15:26:32,341 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:26:32,342 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:32,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:32,342 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:26:32,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-07 15:26:33,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:26:33,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:26:33,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:26:33,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:35,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:36,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:36,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665646239] [2021-10-07 15:26:36,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665646239] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:26:36,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:26:36,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:26:36,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522764269] [2021-10-07 15:26:36,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:26:36,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:26:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:26:36,190 INFO L87 Difference]: Start difference. First operand 16334 states and 96396 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:46,170 INFO L93 Difference]: Finished difference Result 21860 states and 119585 transitions. [2021-10-07 15:26:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:26:46,171 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:26:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:46,416 INFO L225 Difference]: With dead ends: 21860 [2021-10-07 15:26:46,417 INFO L226 Difference]: Without dead ends: 21860 [2021-10-07 15:26:46,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6693.7ms TimeCoverageRelationStatistics Valid=105, Invalid=445, Unknown=2, NotChecked=0, Total=552 [2021-10-07 15:26:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21860 states. [2021-10-07 15:26:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21860 to 16042. [2021-10-07 15:26:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 16041 states have (on average 5.883548407206534) internal successors, (94378), 16041 states have internal predecessors, (94378), 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) [2021-10-07 15:26:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 94378 transitions. [2021-10-07 15:26:47,040 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 94378 transitions. Word has length 26 [2021-10-07 15:26:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:47,040 INFO L470 AbstractCegarLoop]: Abstraction has 16042 states and 94378 transitions. [2021-10-07 15:26:47,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 94378 transitions. [2021-10-07 15:26:47,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:26:47,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:47,088 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:47,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-07 15:26:47,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:26:47,289 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:26:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 85026522, now seen corresponding path program 24 times [2021-10-07 15:26:47,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:47,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746088369] [2021-10-07 15:26:47,291 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:26:47,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:47,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:47,293 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:26:47,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-07 15:26:48,830 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:26:48,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:26:48,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:26:48,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:51,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:51,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:51,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746088369] [2021-10-07 15:26:51,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746088369] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:26:51,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:26:51,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:26:51,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113341511] [2021-10-07 15:26:51,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:26:51,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:26:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=240, Unknown=1, NotChecked=0, Total=306 [2021-10-07 15:26:51,871 INFO L87 Difference]: Start difference. First operand 16042 states and 94378 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:19,339 INFO L93 Difference]: Finished difference Result 24508 states and 132606 transitions. [2021-10-07 15:27:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:27:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:27:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:19,452 INFO L225 Difference]: With dead ends: 24508 [2021-10-07 15:27:19,452 INFO L226 Difference]: Without dead ends: 24508 [2021-10-07 15:27:19,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 7818.0ms TimeCoverageRelationStatistics Valid=207, Invalid=847, Unknown=2, NotChecked=0, Total=1056 [2021-10-07 15:27:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24508 states. [2021-10-07 15:27:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24508 to 16960. [2021-10-07 15:27:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16960 states, 16959 states have (on average 5.905890677516363) internal successors, (100158), 16959 states have internal predecessors, (100158), 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) [2021-10-07 15:27:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16960 states to 16960 states and 100158 transitions. [2021-10-07 15:27:20,247 INFO L78 Accepts]: Start accepts. Automaton has 16960 states and 100158 transitions. Word has length 26 [2021-10-07 15:27:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:20,247 INFO L470 AbstractCegarLoop]: Abstraction has 16960 states and 100158 transitions. [2021-10-07 15:27:20,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16960 states and 100158 transitions. [2021-10-07 15:27:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:27:20,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:20,482 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:20,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-07 15:27:20,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:27:20,696 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:27:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1038824971, now seen corresponding path program 25 times [2021-10-07 15:27:20,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:20,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284518119] [2021-10-07 15:27:20,698 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:27:20,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:20,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:20,700 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:27:20,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-07 15:27:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:27:21,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:27:21,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:22,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:23,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:23,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284518119] [2021-10-07 15:27:23,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284518119] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:23,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:23,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:27:23,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365813723] [2021-10-07 15:27:23,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:27:23,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:23,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:27:23,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:27:23,142 INFO L87 Difference]: Start difference. First operand 16960 states and 100158 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:36,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:36,364 INFO L93 Difference]: Finished difference Result 25450 states and 138189 transitions. [2021-10-07 15:27:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:27:36,365 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:27:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:36,484 INFO L225 Difference]: With dead ends: 25450 [2021-10-07 15:27:36,484 INFO L226 Difference]: Without dead ends: 25450 [2021-10-07 15:27:36,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2095.3ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:27:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25450 states. [2021-10-07 15:27:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25450 to 17228. [2021-10-07 15:27:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17228 states, 17227 states have (on average 5.887618273640216) internal successors, (101426), 17227 states have internal predecessors, (101426), 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) [2021-10-07 15:27:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17228 states to 17228 states and 101426 transitions. [2021-10-07 15:27:37,282 INFO L78 Accepts]: Start accepts. Automaton has 17228 states and 101426 transitions. Word has length 26 [2021-10-07 15:27:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:37,282 INFO L470 AbstractCegarLoop]: Abstraction has 17228 states and 101426 transitions. [2021-10-07 15:27:37,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 17228 states and 101426 transitions. [2021-10-07 15:27:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:27:37,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:37,335 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:37,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2021-10-07 15:27:37,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:27:37,536 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:27:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:37,536 INFO L82 PathProgramCache]: Analyzing trace with hash -984439297, now seen corresponding path program 26 times [2021-10-07 15:27:37,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:37,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490594330] [2021-10-07 15:27:37,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:27:37,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:37,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:37,539 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:27:37,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-07 15:27:39,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:27:39,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:27:39,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:27:39,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:39,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:40,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:40,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490594330] [2021-10-07 15:27:40,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490594330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:40,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:40,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-07 15:27:40,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067015263] [2021-10-07 15:27:40,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:27:40,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:40,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:27:40,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:27:40,106 INFO L87 Difference]: Start difference. First operand 17228 states and 101426 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:50,803 INFO L93 Difference]: Finished difference Result 23152 states and 128399 transitions. [2021-10-07 15:27:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:27:50,804 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:27:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:51,019 INFO L225 Difference]: With dead ends: 23152 [2021-10-07 15:27:51,019 INFO L226 Difference]: Without dead ends: 23050 [2021-10-07 15:27:51,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 4465.4ms TimeCoverageRelationStatistics Valid=307, Invalid=1253, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:27:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23050 states. [2021-10-07 15:27:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23050 to 18450. [2021-10-07 15:27:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18450 states, 18449 states have (on average 5.887473575803567) internal successors, (108618), 18449 states have internal predecessors, (108618), 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) [2021-10-07 15:27:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18450 states to 18450 states and 108618 transitions. [2021-10-07 15:27:51,942 INFO L78 Accepts]: Start accepts. Automaton has 18450 states and 108618 transitions. Word has length 26 [2021-10-07 15:27:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:51,942 INFO L470 AbstractCegarLoop]: Abstraction has 18450 states and 108618 transitions. [2021-10-07 15:27:51,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 18450 states and 108618 transitions. [2021-10-07 15:27:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:27:52,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:52,007 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:52,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-07 15:27:52,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:27:52,214 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:27:52,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:52,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2004261681, now seen corresponding path program 27 times [2021-10-07 15:27:52,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:52,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877511747] [2021-10-07 15:27:52,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:27:52,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:52,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:52,217 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:27:52,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-07 15:27:53,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:27:53,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:27:53,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:27:53,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:54,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:54,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:54,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877511747] [2021-10-07 15:27:54,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877511747] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:54,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:54,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:27:54,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282776326] [2021-10-07 15:27:54,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:27:54,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:27:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:27:54,377 INFO L87 Difference]: Start difference. First operand 18450 states and 108618 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:03,955 INFO L93 Difference]: Finished difference Result 23506 states and 130010 transitions. [2021-10-07 15:28:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:28:03,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:28:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:04,072 INFO L225 Difference]: With dead ends: 23506 [2021-10-07 15:28:04,072 INFO L226 Difference]: Without dead ends: 23492 [2021-10-07 15:28:04,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1025.9ms TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:28:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23492 states. [2021-10-07 15:28:05,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23492 to 18382. [2021-10-07 15:28:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18382 states, 18381 states have (on average 5.8661661498286275) internal successors, (107826), 18381 states have internal predecessors, (107826), 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) [2021-10-07 15:28:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18382 states to 18382 states and 107826 transitions. [2021-10-07 15:28:05,250 INFO L78 Accepts]: Start accepts. Automaton has 18382 states and 107826 transitions. Word has length 26 [2021-10-07 15:28:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:05,251 INFO L470 AbstractCegarLoop]: Abstraction has 18382 states and 107826 transitions. [2021-10-07 15:28:05,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 18382 states and 107826 transitions. [2021-10-07 15:28:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:05,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:05,570 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:05,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:05,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:28:05,785 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:05,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1708203265, now seen corresponding path program 28 times [2021-10-07 15:28:05,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:05,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514550656] [2021-10-07 15:28:05,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:28:05,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:05,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:05,788 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:28:05,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-07 15:28:07,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:28:07,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:07,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:28:07,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:07,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:08,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:08,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514550656] [2021-10-07 15:28:08,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514550656] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:08,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:08,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:28:08,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767244044] [2021-10-07 15:28:08,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:28:08,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:28:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:28:08,105 INFO L87 Difference]: Start difference. First operand 18382 states and 107826 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:25,376 INFO L93 Difference]: Finished difference Result 28778 states and 156009 transitions. [2021-10-07 15:28:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:28:25,377 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:28:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:25,559 INFO L225 Difference]: With dead ends: 28778 [2021-10-07 15:28:25,559 INFO L226 Difference]: Without dead ends: 28778 [2021-10-07 15:28:25,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2982.2ms TimeCoverageRelationStatistics Valid=311, Invalid=1411, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:28:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28778 states. [2021-10-07 15:28:26,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28778 to 19366. [2021-10-07 15:28:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19366 states, 19365 states have (on average 5.878079008520527) internal successors, (113829), 19365 states have internal predecessors, (113829), 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) [2021-10-07 15:28:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19366 states to 19366 states and 113829 transitions. [2021-10-07 15:28:26,793 INFO L78 Accepts]: Start accepts. Automaton has 19366 states and 113829 transitions. Word has length 26 [2021-10-07 15:28:26,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:26,794 INFO L470 AbstractCegarLoop]: Abstraction has 19366 states and 113829 transitions. [2021-10-07 15:28:26,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 19366 states and 113829 transitions. [2021-10-07 15:28:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:26,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:26,872 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:26,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:27,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:28:27,073 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:27,074 INFO L82 PathProgramCache]: Analyzing trace with hash -837212991, now seen corresponding path program 29 times [2021-10-07 15:28:27,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:27,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651900974] [2021-10-07 15:28:27,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:28:27,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:27,076 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:28:27,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-07 15:28:28,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:28:28,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:28,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:28:28,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:29,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:29,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:29,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651900974] [2021-10-07 15:28:29,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651900974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:29,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:29,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:28:29,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723341786] [2021-10-07 15:28:29,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:28:29,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:28:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:28:29,883 INFO L87 Difference]: Start difference. First operand 19366 states and 113829 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:36,704 INFO L93 Difference]: Finished difference Result 29214 states and 160252 transitions. [2021-10-07 15:28:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:28:36,705 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:28:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:37,003 INFO L225 Difference]: With dead ends: 29214 [2021-10-07 15:28:37,003 INFO L226 Difference]: Without dead ends: 29214 [2021-10-07 15:28:37,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 3660.2ms TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:28:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29214 states. [2021-10-07 15:28:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29214 to 21956. [2021-10-07 15:28:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21956 states, 21955 states have (on average 5.907128216807106) internal successors, (129691), 21955 states have internal predecessors, (129691), 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) [2021-10-07 15:28:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21956 states to 21956 states and 129691 transitions. [2021-10-07 15:28:38,310 INFO L78 Accepts]: Start accepts. Automaton has 21956 states and 129691 transitions. Word has length 26 [2021-10-07 15:28:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:38,310 INFO L470 AbstractCegarLoop]: Abstraction has 21956 states and 129691 transitions. [2021-10-07 15:28:38,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21956 states and 129691 transitions. [2021-10-07 15:28:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:38,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:38,398 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:38,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:38,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:28:38,599 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:38,600 INFO L82 PathProgramCache]: Analyzing trace with hash -345945332, now seen corresponding path program 13 times [2021-10-07 15:28:38,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:38,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250355872] [2021-10-07 15:28:38,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:28:38,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:38,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:38,603 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:28:38,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-07 15:28:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:28:39,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:28:39,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:40,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:40,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:40,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250355872] [2021-10-07 15:28:40,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250355872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:40,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:40,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:28:40,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409299753] [2021-10-07 15:28:40,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:28:40,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:40,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:28:40,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:28:40,796 INFO L87 Difference]: Start difference. First operand 21956 states and 129691 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:47,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:47,649 INFO L93 Difference]: Finished difference Result 49922 states and 268582 transitions. [2021-10-07 15:28:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:28:47,650 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:28:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:48,024 INFO L225 Difference]: With dead ends: 49922 [2021-10-07 15:28:48,024 INFO L226 Difference]: Without dead ends: 49914 [2021-10-07 15:28:48,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1222.8ms TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:28:48,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49914 states. [2021-10-07 15:28:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49914 to 25088. [2021-10-07 15:28:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25088 states, 25087 states have (on average 5.980308526328377) internal successors, (150028), 25087 states have internal predecessors, (150028), 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) [2021-10-07 15:28:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25088 states to 25088 states and 150028 transitions. [2021-10-07 15:28:49,946 INFO L78 Accepts]: Start accepts. Automaton has 25088 states and 150028 transitions. Word has length 26 [2021-10-07 15:28:49,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:49,947 INFO L470 AbstractCegarLoop]: Abstraction has 25088 states and 150028 transitions. [2021-10-07 15:28:49,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:49,947 INFO L276 IsEmpty]: Start isEmpty. Operand 25088 states and 150028 transitions. [2021-10-07 15:28:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:50,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:50,035 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:50,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:50,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:28:50,236 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash 323199046, now seen corresponding path program 14 times [2021-10-07 15:28:50,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:50,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425693728] [2021-10-07 15:28:50,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:28:50,238 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:50,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:50,239 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:28:50,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-07 15:28:51,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:28:51,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:51,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:28:51,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:52,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:53,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:53,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425693728] [2021-10-07 15:28:53,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425693728] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:53,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:53,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 15:28:53,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288686880] [2021-10-07 15:28:53,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:28:53,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:53,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:28:53,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:28:53,208 INFO L87 Difference]: Start difference. First operand 25088 states and 150028 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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) [2021-10-07 15:29:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:06,545 INFO L93 Difference]: Finished difference Result 28361 states and 161860 transitions. [2021-10-07 15:29:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:29:06,546 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:29:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:06,770 INFO L225 Difference]: With dead ends: 28361 [2021-10-07 15:29:06,770 INFO L226 Difference]: Without dead ends: 28214 [2021-10-07 15:29:06,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 3088.9ms TimeCoverageRelationStatistics Valid=319, Invalid=1163, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:29:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28214 states. [2021-10-07 15:29:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28214 to 25348. [2021-10-07 15:29:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25348 states, 25347 states have (on average 5.974908273168422) internal successors, (151446), 25347 states have internal predecessors, (151446), 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) [2021-10-07 15:29:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25348 states to 25348 states and 151446 transitions. [2021-10-07 15:29:08,195 INFO L78 Accepts]: Start accepts. Automaton has 25348 states and 151446 transitions. Word has length 26 [2021-10-07 15:29:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:08,195 INFO L470 AbstractCegarLoop]: Abstraction has 25348 states and 151446 transitions. [2021-10-07 15:29:08,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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) [2021-10-07 15:29:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 25348 states and 151446 transitions. [2021-10-07 15:29:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:29:08,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:08,281 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:08,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:08,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:29:08,482 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:29:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1459985036, now seen corresponding path program 15 times [2021-10-07 15:29:08,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:08,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926323198] [2021-10-07 15:29:08,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:29:08,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:08,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:08,485 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:29:08,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-07 15:29:10,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:29:10,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:29:10,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:29:10,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:12,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:13,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:13,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926323198] [2021-10-07 15:29:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926323198] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:13,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:13,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:29:13,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434162259] [2021-10-07 15:29:13,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:29:13,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:29:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:29:13,002 INFO L87 Difference]: Start difference. First operand 25348 states and 151446 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:32,641 INFO L93 Difference]: Finished difference Result 49648 states and 273804 transitions. [2021-10-07 15:29:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:29:32,641 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:29:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:33,125 INFO L225 Difference]: With dead ends: 49648 [2021-10-07 15:29:33,125 INFO L226 Difference]: Without dead ends: 49592 [2021-10-07 15:29:33,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 8946.9ms TimeCoverageRelationStatistics Valid=127, Invalid=521, Unknown=2, NotChecked=0, Total=650 [2021-10-07 15:29:33,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49592 states. [2021-10-07 15:29:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49592 to 26976. [2021-10-07 15:29:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26976 states, 26975 states have (on average 6.0156811862835955) internal successors, (162273), 26975 states have internal predecessors, (162273), 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) [2021-10-07 15:29:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26976 states to 26976 states and 162273 transitions. [2021-10-07 15:29:35,042 INFO L78 Accepts]: Start accepts. Automaton has 26976 states and 162273 transitions. Word has length 26 [2021-10-07 15:29:35,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:35,043 INFO L470 AbstractCegarLoop]: Abstraction has 26976 states and 162273 transitions. [2021-10-07 15:29:35,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 26976 states and 162273 transitions. [2021-10-07 15:29:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:29:35,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:35,135 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:35,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:35,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:29:35,341 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:29:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash 510311128, now seen corresponding path program 16 times [2021-10-07 15:29:35,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:35,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138543239] [2021-10-07 15:29:35,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:29:35,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:35,344 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:29:35,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-07 15:29:36,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:29:36,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:29:36,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:29:36,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:39,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:39,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:39,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138543239] [2021-10-07 15:29:39,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138543239] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:39,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:39,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:29:39,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287700587] [2021-10-07 15:29:39,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:29:39,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:29:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=192, Unknown=1, NotChecked=0, Total=240 [2021-10-07 15:29:39,741 INFO L87 Difference]: Start difference. First operand 26976 states and 162273 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:55,390 INFO L93 Difference]: Finished difference Result 51546 states and 281050 transitions. [2021-10-07 15:29:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:29:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:29:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:55,899 INFO L225 Difference]: With dead ends: 51546 [2021-10-07 15:29:55,900 INFO L226 Difference]: Without dead ends: 50934 [2021-10-07 15:29:55,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 6952.9ms TimeCoverageRelationStatistics Valid=108, Invalid=442, Unknown=2, NotChecked=0, Total=552 [2021-10-07 15:29:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50934 states. [2021-10-07 15:29:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50934 to 28988. [2021-10-07 15:29:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28988 states, 28987 states have (on average 6.079725394142201) internal successors, (176233), 28987 states have internal predecessors, (176233), 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) [2021-10-07 15:29:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28988 states to 28988 states and 176233 transitions. [2021-10-07 15:29:58,176 INFO L78 Accepts]: Start accepts. Automaton has 28988 states and 176233 transitions. Word has length 26 [2021-10-07 15:29:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:58,176 INFO L470 AbstractCegarLoop]: Abstraction has 28988 states and 176233 transitions. [2021-10-07 15:29:58,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 28988 states and 176233 transitions. [2021-10-07 15:29:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:29:58,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:58,323 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:58,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:58,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:29:58,538 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:29:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:58,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1364609833, now seen corresponding path program 17 times [2021-10-07 15:29:58,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:58,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797581353] [2021-10-07 15:29:58,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:29:58,540 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:58,541 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:29:58,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-07 15:29:59,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:29:59,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:29:59,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:29:59,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:00,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:00,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:00,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797581353] [2021-10-07 15:30:00,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797581353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:00,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:00,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:30:00,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401126485] [2021-10-07 15:30:00,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:30:00,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:30:00,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:30:00,741 INFO L87 Difference]: Start difference. First operand 28988 states and 176233 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:12,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:12,997 INFO L93 Difference]: Finished difference Result 54474 states and 299876 transitions. [2021-10-07 15:30:12,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:30:12,998 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:30:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:13,612 INFO L225 Difference]: With dead ends: 54474 [2021-10-07 15:30:13,612 INFO L226 Difference]: Without dead ends: 54396 [2021-10-07 15:30:13,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1046.0ms TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:30:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54396 states. [2021-10-07 15:30:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54396 to 32800. [2021-10-07 15:30:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32800 states, 32799 states have (on average 6.172840635385225) internal successors, (202463), 32799 states have internal predecessors, (202463), 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) [2021-10-07 15:30:15,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32800 states to 32800 states and 202463 transitions. [2021-10-07 15:30:15,725 INFO L78 Accepts]: Start accepts. Automaton has 32800 states and 202463 transitions. Word has length 26 [2021-10-07 15:30:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:15,726 INFO L470 AbstractCegarLoop]: Abstraction has 32800 states and 202463 transitions. [2021-10-07 15:30:15,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 32800 states and 202463 transitions. [2021-10-07 15:30:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:30:16,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:16,189 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:16,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:16,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:30:16,404 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:30:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:16,405 INFO L82 PathProgramCache]: Analyzing trace with hash -791372249, now seen corresponding path program 18 times [2021-10-07 15:30:16,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:16,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314509138] [2021-10-07 15:30:16,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:30:16,405 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:16,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:16,406 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:30:16,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-07 15:30:18,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:30:18,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:30:18,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:30:18,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:20,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:20,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:20,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314509138] [2021-10-07 15:30:20,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314509138] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:20,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:20,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:30:20,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105032286] [2021-10-07 15:30:20,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:30:20,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:20,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:30:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2021-10-07 15:30:20,844 INFO L87 Difference]: Start difference. First operand 32800 states and 202463 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:34,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:34,168 INFO L93 Difference]: Finished difference Result 69136 states and 381283 transitions. [2021-10-07 15:30:34,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:30:34,169 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:30:34,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:34,710 INFO L225 Difference]: With dead ends: 69136 [2021-10-07 15:30:34,710 INFO L226 Difference]: Without dead ends: 69136 [2021-10-07 15:30:34,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7162.2ms TimeCoverageRelationStatistics Valid=131, Invalid=569, Unknown=2, NotChecked=0, Total=702 [2021-10-07 15:30:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69136 states. [2021-10-07 15:30:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69136 to 35716. [2021-10-07 15:30:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35716 states, 35715 states have (on average 6.235111297774044) internal successors, (222687), 35715 states have internal predecessors, (222687), 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) [2021-10-07 15:30:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35716 states to 35716 states and 222687 transitions. [2021-10-07 15:30:37,412 INFO L78 Accepts]: Start accepts. Automaton has 35716 states and 222687 transitions. Word has length 26 [2021-10-07 15:30:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:37,413 INFO L470 AbstractCegarLoop]: Abstraction has 35716 states and 222687 transitions. [2021-10-07 15:30:37,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 35716 states and 222687 transitions. [2021-10-07 15:30:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:30:37,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:37,539 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:37,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:37,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:30:37,739 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:30:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:38,004 INFO L82 PathProgramCache]: Analyzing trace with hash 87825402, now seen corresponding path program 19 times [2021-10-07 15:30:38,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:38,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741473627] [2021-10-07 15:30:38,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:30:38,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:38,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:38,006 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:30:38,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-07 15:30:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:30:39,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:30:39,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:41,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:42,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:42,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741473627] [2021-10-07 15:30:42,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741473627] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:42,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:42,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:30:42,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531997941] [2021-10-07 15:30:42,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:30:42,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:30:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=192, Unknown=1, NotChecked=0, Total=240 [2021-10-07 15:30:42,182 INFO L87 Difference]: Start difference. First operand 35716 states and 222687 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:54,081 INFO L93 Difference]: Finished difference Result 58834 states and 329530 transitions. [2021-10-07 15:30:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:30:54,081 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:30:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:54,549 INFO L225 Difference]: With dead ends: 58834 [2021-10-07 15:30:54,549 INFO L226 Difference]: Without dead ends: 58820 [2021-10-07 15:30:54,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 11168.5ms TimeCoverageRelationStatistics Valid=125, Invalid=523, Unknown=2, NotChecked=0, Total=650 [2021-10-07 15:30:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58820 states. [2021-10-07 15:30:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58820 to 36074. [2021-10-07 15:30:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36074 states, 36073 states have (on average 6.246943697502287) internal successors, (225346), 36073 states have internal predecessors, (225346), 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) [2021-10-07 15:30:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36074 states to 36074 states and 225346 transitions. [2021-10-07 15:30:57,308 INFO L78 Accepts]: Start accepts. Automaton has 36074 states and 225346 transitions. Word has length 26 [2021-10-07 15:30:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:57,310 INFO L470 AbstractCegarLoop]: Abstraction has 36074 states and 225346 transitions. [2021-10-07 15:30:57,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 36074 states and 225346 transitions. [2021-10-07 15:30:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:30:57,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:57,484 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:57,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:57,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:30:57,685 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:30:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:57,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1224687930, now seen corresponding path program 20 times [2021-10-07 15:30:57,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:57,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892204104] [2021-10-07 15:30:57,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:30:57,687 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:57,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:57,688 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:30:57,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-07 15:30:59,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:30:59,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:30:59,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:30:59,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:00,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:00,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:00,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892204104] [2021-10-07 15:31:00,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892204104] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:00,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:00,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:31:00,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648924088] [2021-10-07 15:31:00,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:31:00,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:31:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:31:00,918 INFO L87 Difference]: Start difference. First operand 36074 states and 225346 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 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) [2021-10-07 15:31:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:09,308 INFO L93 Difference]: Finished difference Result 39948 states and 239127 transitions. [2021-10-07 15:31:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:31:09,309 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:31:09,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:09,781 INFO L225 Difference]: With dead ends: 39948 [2021-10-07 15:31:09,781 INFO L226 Difference]: Without dead ends: 39782 [2021-10-07 15:31:09,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 3557.6ms TimeCoverageRelationStatistics Valid=385, Invalid=1421, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:31:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39782 states. [2021-10-07 15:31:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39782 to 36348. [2021-10-07 15:31:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36348 states, 36347 states have (on average 6.240267422345723) internal successors, (226815), 36347 states have internal predecessors, (226815), 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) [2021-10-07 15:31:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36348 states to 36348 states and 226815 transitions. [2021-10-07 15:31:11,895 INFO L78 Accepts]: Start accepts. Automaton has 36348 states and 226815 transitions. Word has length 26 [2021-10-07 15:31:11,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:11,895 INFO L470 AbstractCegarLoop]: Abstraction has 36348 states and 226815 transitions. [2021-10-07 15:31:11,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 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) [2021-10-07 15:31:11,895 INFO L276 IsEmpty]: Start isEmpty. Operand 36348 states and 226815 transitions. [2021-10-07 15:31:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:31:12,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:12,419 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:12,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-07 15:31:12,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:31:12,634 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:31:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1954354938, now seen corresponding path program 21 times [2021-10-07 15:31:12,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:12,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133206948] [2021-10-07 15:31:12,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:31:12,636 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:12,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:12,636 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:31:12,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-07 15:31:14,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:31:14,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:31:14,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:31:14,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:14,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:15,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:15,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133206948] [2021-10-07 15:31:15,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133206948] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:15,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:15,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:31:15,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067012067] [2021-10-07 15:31:15,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:31:15,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:15,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:31:15,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:31:15,143 INFO L87 Difference]: Start difference. First operand 36348 states and 226815 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:21,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:21,181 INFO L93 Difference]: Finished difference Result 57814 states and 329740 transitions. [2021-10-07 15:31:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:31:21,182 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:31:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:21,609 INFO L225 Difference]: With dead ends: 57814 [2021-10-07 15:31:21,609 INFO L226 Difference]: Without dead ends: 57798 [2021-10-07 15:31:21,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3429.2ms TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:31:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57798 states. [2021-10-07 15:31:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57798 to 37314. [2021-10-07 15:31:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37314 states, 37313 states have (on average 6.246991665103315) internal successors, (233094), 37313 states have internal predecessors, (233094), 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) [2021-10-07 15:31:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37314 states to 37314 states and 233094 transitions. [2021-10-07 15:31:24,145 INFO L78 Accepts]: Start accepts. Automaton has 37314 states and 233094 transitions. Word has length 26 [2021-10-07 15:31:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:24,145 INFO L470 AbstractCegarLoop]: Abstraction has 37314 states and 233094 transitions. [2021-10-07 15:31:24,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 37314 states and 233094 transitions. [2021-10-07 15:31:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:31:24,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:24,273 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:24,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-07 15:31:24,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:31:24,474 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:31:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash 659577688, now seen corresponding path program 22 times [2021-10-07 15:31:24,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:24,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347115842] [2021-10-07 15:31:24,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:31:24,477 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:24,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:24,478 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:31:24,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-07 15:31:26,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:31:26,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:31:26,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:31:26,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:28,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:29,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:29,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347115842] [2021-10-07 15:31:29,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347115842] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:29,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:29,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:31:29,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792259265] [2021-10-07 15:31:29,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:31:29,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:29,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:31:29,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2021-10-07 15:31:29,261 INFO L87 Difference]: Start difference. First operand 37314 states and 233094 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:41,805 INFO L93 Difference]: Finished difference Result 76028 states and 422901 transitions. [2021-10-07 15:31:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:31:41,805 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:31:41,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:42,425 INFO L225 Difference]: With dead ends: 76028 [2021-10-07 15:31:42,425 INFO L226 Difference]: Without dead ends: 76028 [2021-10-07 15:31:42,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7313.7ms TimeCoverageRelationStatistics Valid=131, Invalid=569, Unknown=2, NotChecked=0, Total=702 [2021-10-07 15:31:42,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76028 states. [2021-10-07 15:31:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76028 to 40894. [2021-10-07 15:31:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40894 states, 40893 states have (on average 6.324065243440198) internal successors, (258610), 40893 states have internal predecessors, (258610), 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) [2021-10-07 15:31:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40894 states to 40894 states and 258610 transitions. [2021-10-07 15:31:45,848 INFO L78 Accepts]: Start accepts. Automaton has 40894 states and 258610 transitions. Word has length 26 [2021-10-07 15:31:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:45,848 INFO L470 AbstractCegarLoop]: Abstraction has 40894 states and 258610 transitions. [2021-10-07 15:31:45,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 40894 states and 258610 transitions. [2021-10-07 15:31:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:31:46,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:46,058 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:46,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2021-10-07 15:31:46,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:31:46,274 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:31:46,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:46,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1204504089, now seen corresponding path program 23 times [2021-10-07 15:31:46,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:46,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723238630] [2021-10-07 15:31:46,276 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:31:46,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:46,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:46,277 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:31:46,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-07 15:31:47,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:31:47,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:31:47,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:31:47,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:50,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:50,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:50,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723238630] [2021-10-07 15:31:50,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723238630] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:50,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:50,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:31:50,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986421098] [2021-10-07 15:31:50,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:31:50,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:31:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:31:50,350 INFO L87 Difference]: Start difference. First operand 40894 states and 258610 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:05,256 INFO L93 Difference]: Finished difference Result 59478 states and 344424 transitions. [2021-10-07 15:32:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:32:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:32:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:05,719 INFO L225 Difference]: With dead ends: 59478 [2021-10-07 15:32:05,720 INFO L226 Difference]: Without dead ends: 59422 [2021-10-07 15:32:05,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 6910.2ms TimeCoverageRelationStatistics Valid=110, Invalid=350, Unknown=2, NotChecked=0, Total=462 [2021-10-07 15:32:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59422 states. [2021-10-07 15:32:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59422 to 41898. [2021-10-07 15:32:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41898 states, 41897 states have (on average 6.342578227558059) internal successors, (265735), 41897 states have internal predecessors, (265735), 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) [2021-10-07 15:32:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41898 states to 41898 states and 265735 transitions. [2021-10-07 15:32:08,472 INFO L78 Accepts]: Start accepts. Automaton has 41898 states and 265735 transitions. Word has length 26 [2021-10-07 15:32:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:08,472 INFO L470 AbstractCegarLoop]: Abstraction has 41898 states and 265735 transitions. [2021-10-07 15:32:08,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:08,474 INFO L276 IsEmpty]: Start isEmpty. Operand 41898 states and 265735 transitions. [2021-10-07 15:32:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:32:08,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:08,646 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:08,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:08,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:32:08,847 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:32:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2034043321, now seen corresponding path program 24 times [2021-10-07 15:32:08,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:08,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313504250] [2021-10-07 15:32:08,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:32:08,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:08,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:08,851 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:32:08,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-07 15:32:10,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:32:10,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:32:10,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:32:10,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:13,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:13,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:13,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313504250] [2021-10-07 15:32:13,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313504250] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:13,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:13,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:32:13,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014789188] [2021-10-07 15:32:13,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:32:13,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:13,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:32:13,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:32:13,392 INFO L87 Difference]: Start difference. First operand 41898 states and 265735 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:23,375 INFO L93 Difference]: Finished difference Result 56794 states and 334900 transitions. [2021-10-07 15:32:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:32:23,376 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:32:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:23,817 INFO L225 Difference]: With dead ends: 56794 [2021-10-07 15:32:23,817 INFO L226 Difference]: Without dead ends: 56794 [2021-10-07 15:32:23,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 6427.8ms TimeCoverageRelationStatistics Valid=56, Invalid=214, Unknown=2, NotChecked=0, Total=272 [2021-10-07 15:32:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56794 states. [2021-10-07 15:32:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56794 to 41912. [2021-10-07 15:32:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41912 states, 41911 states have (on average 6.333540120732027) internal successors, (265445), 41911 states have internal predecessors, (265445), 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) [2021-10-07 15:32:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41912 states to 41912 states and 265445 transitions. [2021-10-07 15:32:26,642 INFO L78 Accepts]: Start accepts. Automaton has 41912 states and 265445 transitions. Word has length 26 [2021-10-07 15:32:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:26,643 INFO L470 AbstractCegarLoop]: Abstraction has 41912 states and 265445 transitions. [2021-10-07 15:32:26,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 41912 states and 265445 transitions. [2021-10-07 15:32:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:32:26,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:26,815 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:26,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-07 15:32:27,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:32:27,016 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:32:27,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:27,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1075421370, now seen corresponding path program 25 times [2021-10-07 15:32:27,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:27,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091878005] [2021-10-07 15:32:27,018 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:32:27,018 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:27,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:27,019 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:32:27,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-07 15:32:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:32:28,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:32:28,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:29,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:29,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:29,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091878005] [2021-10-07 15:32:29,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091878005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:29,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:29,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:32:29,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184461977] [2021-10-07 15:32:29,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:32:29,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:32:29,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:32:29,813 INFO L87 Difference]: Start difference. First operand 41912 states and 265445 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 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) [2021-10-07 15:32:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:38,459 INFO L93 Difference]: Finished difference Result 68778 states and 395503 transitions. [2021-10-07 15:32:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:32:38,460 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:32:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:39,335 INFO L225 Difference]: With dead ends: 68778 [2021-10-07 15:32:39,336 INFO L226 Difference]: Without dead ends: 68778 [2021-10-07 15:32:39,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1520.2ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:32:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68778 states. [2021-10-07 15:32:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68778 to 42596. [2021-10-07 15:32:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42596 states, 42595 states have (on average 6.34457095903275) internal successors, (270247), 42595 states have internal predecessors, (270247), 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) [2021-10-07 15:32:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42596 states to 42596 states and 270247 transitions. [2021-10-07 15:32:42,662 INFO L78 Accepts]: Start accepts. Automaton has 42596 states and 270247 transitions. Word has length 26 [2021-10-07 15:32:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:42,663 INFO L470 AbstractCegarLoop]: Abstraction has 42596 states and 270247 transitions. [2021-10-07 15:32:42,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 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) [2021-10-07 15:32:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 42596 states and 270247 transitions. [2021-10-07 15:32:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:32:42,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:42,879 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:42,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:43,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:32:43,093 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:32:43,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash -327830203, now seen corresponding path program 26 times [2021-10-07 15:32:43,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:43,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369115090] [2021-10-07 15:32:43,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:32:43,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:43,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:43,096 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:32:43,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-07 15:32:44,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:32:44,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:32:44,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:32:44,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:45,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:46,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:46,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369115090] [2021-10-07 15:32:46,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369115090] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:46,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:46,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 15:32:46,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455706277] [2021-10-07 15:32:46,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:32:46,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:46,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:32:46,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:32:46,097 INFO L87 Difference]: Start difference. First operand 42596 states and 270247 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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) [2021-10-07 15:32:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:56,111 INFO L93 Difference]: Finished difference Result 49454 states and 299037 transitions. [2021-10-07 15:32:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 15:32:56,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:32:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:56,495 INFO L225 Difference]: With dead ends: 49454 [2021-10-07 15:32:56,495 INFO L226 Difference]: Without dead ends: 49362 [2021-10-07 15:32:56,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3547.6ms TimeCoverageRelationStatistics Valid=355, Invalid=1625, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:32:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49362 states. [2021-10-07 15:32:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49362 to 42816. [2021-10-07 15:32:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42816 states, 42815 states have (on average 6.334859278290319) internal successors, (271227), 42815 states have internal predecessors, (271227), 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) [2021-10-07 15:32:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42816 states to 42816 states and 271227 transitions. [2021-10-07 15:32:59,031 INFO L78 Accepts]: Start accepts. Automaton has 42816 states and 271227 transitions. Word has length 26 [2021-10-07 15:32:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:59,031 INFO L470 AbstractCegarLoop]: Abstraction has 42816 states and 271227 transitions. [2021-10-07 15:32:59,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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) [2021-10-07 15:32:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 42816 states and 271227 transitions. [2021-10-07 15:32:59,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:32:59,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:59,179 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:59,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:59,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:32:59,385 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:32:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1301720775, now seen corresponding path program 27 times [2021-10-07 15:32:59,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:59,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754076018] [2021-10-07 15:32:59,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:32:59,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:59,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:59,387 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:32:59,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-07 15:33:01,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:33:01,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:01,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:33:01,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:02,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:02,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:02,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754076018] [2021-10-07 15:33:02,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754076018] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:02,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:02,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 15:33:02,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631066550] [2021-10-07 15:33:02,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:33:02,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:33:02,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:33:02,909 INFO L87 Difference]: Start difference. First operand 42816 states and 271227 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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) [2021-10-07 15:33:14,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:14,351 INFO L93 Difference]: Finished difference Result 50984 states and 304760 transitions. [2021-10-07 15:33:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-07 15:33:14,351 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:33:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:14,774 INFO L225 Difference]: With dead ends: 50984 [2021-10-07 15:33:14,774 INFO L226 Difference]: Without dead ends: 50906 [2021-10-07 15:33:14,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 6150.6ms TimeCoverageRelationStatistics Valid=696, Invalid=2964, Unknown=0, NotChecked=0, Total=3660 [2021-10-07 15:33:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50906 states. [2021-10-07 15:33:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50906 to 42962. [2021-10-07 15:33:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42962 states, 42961 states have (on average 6.332673820441796) internal successors, (272058), 42961 states have internal predecessors, (272058), 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) [2021-10-07 15:33:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42962 states to 42962 states and 272058 transitions. [2021-10-07 15:33:17,279 INFO L78 Accepts]: Start accepts. Automaton has 42962 states and 272058 transitions. Word has length 26 [2021-10-07 15:33:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:17,279 INFO L470 AbstractCegarLoop]: Abstraction has 42962 states and 272058 transitions. [2021-10-07 15:33:17,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 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) [2021-10-07 15:33:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 42962 states and 272058 transitions. [2021-10-07 15:33:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:33:17,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:17,434 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:17,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:17,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:33:17,635 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:33:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash 974610252, now seen corresponding path program 28 times [2021-10-07 15:33:17,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:17,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785883946] [2021-10-07 15:33:17,636 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:33:17,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:17,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:17,638 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:33:17,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-07 15:33:19,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:33:19,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:19,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:33:19,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:19,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:20,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:20,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785883946] [2021-10-07 15:33:20,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785883946] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:20,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:20,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:33:20,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963267918] [2021-10-07 15:33:20,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:33:20,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:20,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:33:20,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:33:20,411 INFO L87 Difference]: Start difference. First operand 42962 states and 272058 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:31,111 INFO L93 Difference]: Finished difference Result 70856 states and 409405 transitions. [2021-10-07 15:33:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:33:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:33:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:32,052 INFO L225 Difference]: With dead ends: 70856 [2021-10-07 15:33:32,052 INFO L226 Difference]: Without dead ends: 70764 [2021-10-07 15:33:32,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1110.6ms TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:33:32,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70764 states. [2021-10-07 15:33:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70764 to 47186. [2021-10-07 15:33:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47186 states, 47185 states have (on average 6.356765921373317) internal successors, (299944), 47185 states have internal predecessors, (299944), 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) [2021-10-07 15:33:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47186 states to 47186 states and 299944 transitions. [2021-10-07 15:33:35,407 INFO L78 Accepts]: Start accepts. Automaton has 47186 states and 299944 transitions. Word has length 26 [2021-10-07 15:33:35,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:35,407 INFO L470 AbstractCegarLoop]: Abstraction has 47186 states and 299944 transitions. [2021-10-07 15:33:35,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 47186 states and 299944 transitions. [2021-10-07 15:33:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:33:35,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:35,633 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:35,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2021-10-07 15:33:35,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:33:35,850 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:33:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:35,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1298283762, now seen corresponding path program 29 times [2021-10-07 15:33:35,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:35,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73279292] [2021-10-07 15:33:35,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:33:35,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:35,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:35,853 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:33:35,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-07 15:33:37,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:33:37,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:37,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:33:37,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:39,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:39,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:39,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73279292] [2021-10-07 15:33:39,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73279292] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:39,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:39,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:33:39,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731512036] [2021-10-07 15:33:39,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:33:39,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:33:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:33:39,961 INFO L87 Difference]: Start difference. First operand 47186 states and 299944 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:50,684 INFO L93 Difference]: Finished difference Result 64362 states and 376714 transitions. [2021-10-07 15:33:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:33:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:33:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:51,267 INFO L225 Difference]: With dead ends: 64362 [2021-10-07 15:33:51,267 INFO L226 Difference]: Without dead ends: 64320 [2021-10-07 15:33:51,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 8703.3ms TimeCoverageRelationStatistics Valid=110, Invalid=350, Unknown=2, NotChecked=0, Total=462 [2021-10-07 15:33:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64320 states. [2021-10-07 15:33:53,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64320 to 47790. Received shutdown request... [2021-10-07 15:33:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47790 states, 47789 states have (on average 6.370838477473896) internal successors, (304456), 47789 states have internal predecessors, (304456), 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) [2021-10-07 15:33:53,630 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:33:53,645 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:33:53,645 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:33:53,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:53,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:33:53,845 WARN L594 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2021-10-07 15:33:53,848 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:33:53,848 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:33:53,848 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:33:53,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:33:53,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:33:53,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:33:53,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:33:53,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:33:53,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:33:53,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:33:53,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:33:53,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:33:53,851 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-07 15:33:53,855 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:33:53,855 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:33:53,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:33:53 BasicIcfg [2021-10-07 15:33:53,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:33:53,858 INFO L168 Benchmark]: Toolchain (without parser) took 775004.38 ms. Allocated memory was 151.0 MB in the beginning and 6.8 GB in the end (delta: 6.7 GB). Free memory was 125.6 MB in the beginning and 5.5 GB in the end (delta: -5.3 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. [2021-10-07 15:33:53,858 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:33:53,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 114.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:33:53,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.55 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:33:53,860 INFO L168 Benchmark]: Boogie Preprocessor took 75.89 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 110.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:33:53,860 INFO L168 Benchmark]: RCFGBuilder took 734.04 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 95.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:33:53,860 INFO L168 Benchmark]: TraceAbstraction took 773625.11 ms. Allocated memory was 151.0 MB in the beginning and 6.8 GB in the end (delta: 6.7 GB). Free memory was 95.1 MB in the beginning and 5.5 GB in the end (delta: -5.4 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. [2021-10-07 15:33:53,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 466.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 114.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 82.55 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.89 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 110.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 734.04 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 95.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 773625.11 ms. Allocated memory was 151.0 MB in the beginning and 6.8 GB in the end (delta: 6.7 GB). Free memory was 95.1 MB in the beginning and 5.5 GB in the end (delta: -5.4 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17184.7ms, 152 PlacesBefore, 56 PlacesAfterwards, 149 TransitionsBefore, 47 TransitionsAfterwards, 2736 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 144 TotalNumberOfCompositions, 3172 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3172, positive: 3172, positive conditional: 0, positive unconditional: 3172, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1802, positive: 1802, positive conditional: 0, positive unconditional: 1802, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1802, positive: 1802, positive conditional: 0, positive unconditional: 1802, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3172, positive: 1370, positive conditional: 0, positive unconditional: 1370, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1802, unknown conditional: 0, unknown unconditional: 1802] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 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 - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 176 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 773433.1ms, OverallIterations: 91, TraceHistogramMax: 3, EmptinessCheckTime: 5809.1ms, AutomataDifference: 475762.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17262.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6888 SDtfs, 20637 SDslu, 42216 SDs, 0 SdLazy, 37370 SolverSat, 1760 SolverUnsat, 80 SolverUnknown, 0 SolverNotchecked, 289987.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4716 GetRequests, 3090 SyntacticMatches, 0 SemanticMatches, 1626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7245 ImplicationChecksByTransitivity, 200313.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47186occurred in iteration=90, InterpolantAutomatonStates: 1520, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68295.8ms AutomataMinimizationTime, 91 MinimizatonAttempts, 458500 StatesRemovedByMinimization, 80 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 822.8ms SsaConstructionTime, 14034.3ms SatisfiabilityAnalysisTime, 108695.3ms InterpolantComputationTime, 2089 NumberOfCodeBlocks, 2089 NumberOfCodeBlocksAsserted, 169 NumberOfCheckSat, 3996 ConstructedInterpolants, 480 QuantifiedInterpolants, 41537 SizeOfPredicates, 437 NumberOfNonLiveVariables, 10165 ConjunctsInSsa, 846 ConjunctsInUnsatCore, 182 InterpolantComputations, 25 PerfectInterpolantSequences, 139/970 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown