/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/popl20/difference-det.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:25:54,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:25:54,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:25:54,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:25:54,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:25:54,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:25:54,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:25:54,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:25:54,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:25:54,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:25:54,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:25:54,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:25:54,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:25:54,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:25:54,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:25:54,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:25:54,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 21:25:54,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:25:54,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:25:54,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:25:54,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:25:54,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:25:54,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:25:54,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:25:54,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:25:54,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:25:54,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:25:54,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:25:54,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:25:54,535 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:25:54,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:25:54,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:25:54,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:25:54,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:25:54,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:25:54,539 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:25:54,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:25:54,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:25:54,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:25:54,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:25:54,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:25:54,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:25:54,541 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:25:54,541 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:25:54,541 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:25:54,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:25:54,542 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:25:54,542 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:25:54,542 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:25:54,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:25:54,543 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:25:54,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:25:54,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:25:54,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:25:54,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:25:54,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:25:54,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:25:54,545 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:25:54,545 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:25:54,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:25:54,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:25:54,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:25:54,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:25:54,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:25:54,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:25:54,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:25:54,993 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:25:54,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/difference-det.wvr.c [2021-10-06 21:25:55,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b30aacc39/313989d934bc4d13abd1b89ef0aefc6e/FLAG99971c70a [2021-10-06 21:25:55,672 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:25:55,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/difference-det.wvr.c [2021-10-06 21:25:55,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b30aacc39/313989d934bc4d13abd1b89ef0aefc6e/FLAG99971c70a [2021-10-06 21:25:55,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b30aacc39/313989d934bc4d13abd1b89ef0aefc6e [2021-10-06 21:25:55,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:25:56,004 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:25:56,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:25:56,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:25:56,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:25:56,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:25:55" (1/1) ... [2021-10-06 21:25:56,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e546d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56, skipping insertion in model container [2021-10-06 21:25:56,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:25:55" (1/1) ... [2021-10-06 21:25:56,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:25:56,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:25:56,236 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/popl20/difference-det.wvr.c[2441,2454] [2021-10-06 21:25:56,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:25:56,256 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:25:56,283 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/popl20/difference-det.wvr.c[2441,2454] [2021-10-06 21:25:56,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:25:56,302 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:25:56,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56 WrapperNode [2021-10-06 21:25:56,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:25:56,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:25:56,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:25:56,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:25:56,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:25:56,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:25:56,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:25:56,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:25:56,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:25:56,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:25:56,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:25:56,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:25:56,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (1/1) ... [2021-10-06 21:25:56,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:25:56,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:25:56,453 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) [2021-10-06 21:25:56,456 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 [2021-10-06 21:25:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:25:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:25:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:25:56,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:25:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:25:56,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:25:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:25:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 21:25:56,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 21:25:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:25:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:25:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:25:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:25:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:25:56,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:25:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:25:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:25:56,523 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:25:57,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:25:57,236 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-06 21:25:57,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:25:57 BoogieIcfgContainer [2021-10-06 21:25:57,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:25:57,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:25:57,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:25:57,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:25:57,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:25:55" (1/3) ... [2021-10-06 21:25:57,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25abb08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:25:57, skipping insertion in model container [2021-10-06 21:25:57,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:25:56" (2/3) ... [2021-10-06 21:25:57,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25abb08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:25:57, skipping insertion in model container [2021-10-06 21:25:57,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:25:57" (3/3) ... [2021-10-06 21:25:57,253 INFO L111 eAbstractionObserver]: Analyzing ICFG difference-det.wvr.c [2021-10-06 21:25:57,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:25:57,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-06 21:25:57,260 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:25:57,334 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,335 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,335 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,335 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,336 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,336 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,336 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,336 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,337 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,337 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,337 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,337 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,338 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,338 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,338 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,338 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,338 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,339 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,339 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,340 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,340 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,340 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,341 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,341 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,342 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,344 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,345 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,345 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,345 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,346 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,346 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,347 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,347 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,347 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,347 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,347 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,348 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,348 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,348 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,349 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,349 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,349 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,349 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,350 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,350 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,351 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,352 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,352 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,352 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,353 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,354 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,354 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,354 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,355 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,356 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,356 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,356 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,356 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,356 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,359 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,359 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,359 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,361 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,362 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,362 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,362 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,363 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,363 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,363 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,363 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,364 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,364 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,370 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,374 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,377 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,378 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,379 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,379 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,381 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,382 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,382 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,382 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,382 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,382 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,383 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:25:57,392 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-06 21:25:57,446 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:25:57,454 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 [2021-10-06 21:25:57,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-06 21:25:57,473 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:25:57,486 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 133 transitions, 298 flow [2021-10-06 21:25:57,489 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 133 transitions, 298 flow [2021-10-06 21:25:57,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 133 transitions, 298 flow [2021-10-06 21:25:57,554 INFO L129 PetriNetUnfolder]: 9/129 cut-off events. [2021-10-06 21:25:57,554 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-06 21:25:57,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 129 events. 9/129 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2021-10-06 21:25:57,565 INFO L116 LiptonReduction]: Number of co-enabled transitions 2736 [2021-10-06 21:26:09,661 INFO L131 LiptonReduction]: Checked pairs total: 3105 [2021-10-06 21:26:09,661 INFO L133 LiptonReduction]: Total number of compositions: 125 [2021-10-06 21:26:09,673 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 51 transitions, 134 flow [2021-10-06 21:26:09,736 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:26:09,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:09,749 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:26:09,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:09,756 INFO L82 PathProgramCache]: Analyzing trace with hash 548, now seen corresponding path program 1 times [2021-10-06 21:26:09,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:09,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452450096] [2021-10-06 21:26:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:09,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:09,778 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) [2021-10-06 21:26:09,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:26:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:09,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:26:09,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:09,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:09,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:09,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452450096] [2021-10-06 21:26:09,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452450096] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:09,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:09,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:26:09,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155058676] [2021-10-06 21:26:09,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:26:09,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:26:09,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:26:09,901 INFO L87 Difference]: Start difference. First operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 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) [2021-10-06 21:26:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:09,956 INFO L93 Difference]: Finished difference Result 640 states and 2671 transitions. [2021-10-06 21:26:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:26:09,957 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 [2021-10-06 21:26:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:09,986 INFO L225 Difference]: With dead ends: 640 [2021-10-06 21:26:09,987 INFO L226 Difference]: Without dead ends: 640 [2021-10-06 21:26:09,988 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 [2021-10-06 21:26:10,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-06 21:26:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-10-06 21:26:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 625 states have (on average 4.2736) internal successors, (2671), 639 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2671 transitions. [2021-10-06 21:26:10,123 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2671 transitions. Word has length 1 [2021-10-06 21:26:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:10,124 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2671 transitions. [2021-10-06 21:26:10,124 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) [2021-10-06 21:26:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2671 transitions. [2021-10-06 21:26:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:26:10,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:10,125 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:26:10,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:10,336 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 [2021-10-06 21:26:10,337 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:10,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash 540989, now seen corresponding path program 1 times [2021-10-06 21:26:10,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:10,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842231050] [2021-10-06 21:26:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:10,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:10,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:10,347 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) [2021-10-06 21:26:10,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:26:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:10,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:10,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:10,854 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-06 21:26:10,855 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 45 treesize of output 77 [2021-10-06 21:26:10,873 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 219 treesize of output 217 [2021-10-06 21:26:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:11,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:11,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:11,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842231050] [2021-10-06 21:26:11,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842231050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:11,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:11,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:11,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85740666] [2021-10-06 21:26:11,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:11,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:11,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:11,999 INFO L87 Difference]: Start difference. First operand 640 states and 2671 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) [2021-10-06 21:26:12,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:12,097 INFO L93 Difference]: Finished difference Result 610 states and 2557 transitions. [2021-10-06 21:26:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:12,103 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 [2021-10-06 21:26:12,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:12,115 INFO L225 Difference]: With dead ends: 610 [2021-10-06 21:26:12,115 INFO L226 Difference]: Without dead ends: 610 [2021-10-06 21:26:12,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-06 21:26:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-10-06 21:26:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 597 states have (on average 4.283082077051926) internal successors, (2557), 609 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2557 transitions. [2021-10-06 21:26:12,205 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2557 transitions. Word has length 3 [2021-10-06 21:26:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:12,206 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 2557 transitions. [2021-10-06 21:26:12,209 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) [2021-10-06 21:26:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2557 transitions. [2021-10-06 21:26:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:26:12,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:12,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:26:12,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:12,421 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 [2021-10-06 21:26:12,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:12,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:12,424 INFO L82 PathProgramCache]: Analyzing trace with hash 540990, now seen corresponding path program 1 times [2021-10-06 21:26:12,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:12,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040182247] [2021-10-06 21:26:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:12,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:12,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:12,427 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) [2021-10-06 21:26:12,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:26:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:12,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:26:12,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:12,773 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:26:12,774 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 290 treesize of output 319 [2021-10-06 21:26:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:16,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:16,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:16,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040182247] [2021-10-06 21:26:16,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040182247] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:16,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:16,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:16,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561614583] [2021-10-06 21:26:16,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:16,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:16,864 INFO L87 Difference]: Start difference. First operand 610 states and 2557 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) [2021-10-06 21:26:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:16,936 INFO L93 Difference]: Finished difference Result 580 states and 2443 transitions. [2021-10-06 21:26:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:16,936 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 [2021-10-06 21:26:16,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:16,943 INFO L225 Difference]: With dead ends: 580 [2021-10-06 21:26:16,943 INFO L226 Difference]: Without dead ends: 580 [2021-10-06 21:26:16,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-06 21:26:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-10-06 21:26:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 569 states have (on average 4.293497363796134) internal successors, (2443), 579 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 2443 transitions. [2021-10-06 21:26:16,974 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 2443 transitions. Word has length 3 [2021-10-06 21:26:16,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:16,974 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 2443 transitions. [2021-10-06 21:26:16,974 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) [2021-10-06 21:26:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 2443 transitions. [2021-10-06 21:26:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:26:16,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:16,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:26:16,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:17,187 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 [2021-10-06 21:26:17,191 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 519902016, now seen corresponding path program 1 times [2021-10-06 21:26:17,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:17,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763040429] [2021-10-06 21:26:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:17,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:17,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:17,198 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) [2021-10-06 21:26:17,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:26:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:17,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:26:17,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:17,516 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 21:26:17,516 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 [2021-10-06 21:26:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:17,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:17,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:17,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763040429] [2021-10-06 21:26:17,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763040429] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:17,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:17,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:17,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636616565] [2021-10-06 21:26:17,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:17,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:17,662 INFO L87 Difference]: Start difference. First operand 580 states and 2443 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) [2021-10-06 21:26:17,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:17,723 INFO L93 Difference]: Finished difference Result 562 states and 2389 transitions. [2021-10-06 21:26:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:17,724 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 [2021-10-06 21:26:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:17,731 INFO L225 Difference]: With dead ends: 562 [2021-10-06 21:26:17,731 INFO L226 Difference]: Without dead ends: 562 [2021-10-06 21:26:17,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-06 21:26:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-10-06 21:26:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 553 states have (on average 4.320072332730561) internal successors, (2389), 561 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 2389 transitions. [2021-10-06 21:26:17,763 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 2389 transitions. Word has length 5 [2021-10-06 21:26:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:17,764 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 2389 transitions. [2021-10-06 21:26:17,764 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) [2021-10-06 21:26:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 2389 transitions. [2021-10-06 21:26:17,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:26:17,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:17,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:26:17,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:17,977 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 [2021-10-06 21:26:17,978 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:17,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:17,979 INFO L82 PathProgramCache]: Analyzing trace with hash 519902017, now seen corresponding path program 1 times [2021-10-06 21:26:17,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:17,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647662540] [2021-10-06 21:26:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:17,981 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:17,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:17,982 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) [2021-10-06 21:26:17,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:26:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:18,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:26:18,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:18,251 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:26:18,252 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 [2021-10-06 21:26:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:18,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:18,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:18,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647662540] [2021-10-06 21:26:18,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647662540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:18,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:18,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:26:18,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502324650] [2021-10-06 21:26:18,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:26:18,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:26:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:18,808 INFO L87 Difference]: Start difference. First operand 562 states and 2389 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) [2021-10-06 21:26:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:18,855 INFO L93 Difference]: Finished difference Result 544 states and 2335 transitions. [2021-10-06 21:26:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:18,856 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 [2021-10-06 21:26:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:18,862 INFO L225 Difference]: With dead ends: 544 [2021-10-06 21:26:18,863 INFO L226 Difference]: Without dead ends: 544 [2021-10-06 21:26:18,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-06 21:26:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-10-06 21:26:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 537 states have (on average 4.348230912476723) internal successors, (2335), 543 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 2335 transitions. [2021-10-06 21:26:18,891 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 2335 transitions. Word has length 5 [2021-10-06 21:26:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:18,891 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 2335 transitions. [2021-10-06 21:26:18,892 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) [2021-10-06 21:26:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 2335 transitions. [2021-10-06 21:26:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:26:18,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:18,893 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:18,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:19,106 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 [2021-10-06 21:26:19,107 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:19,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1409642574, now seen corresponding path program 1 times [2021-10-06 21:26:19,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:19,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060233712] [2021-10-06 21:26:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:19,109 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:19,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:19,110 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) [2021-10-06 21:26:19,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:26:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:19,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:26:19,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:19,380 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:26:19,381 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 [2021-10-06 21:26:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:19,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:19,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:19,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060233712] [2021-10-06 21:26:19,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060233712] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:19,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:19,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:26:19,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314808043] [2021-10-06 21:26:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:26:19,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:26:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:19,953 INFO L87 Difference]: Start difference. First operand 544 states and 2335 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) [2021-10-06 21:26:19,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:19,996 INFO L93 Difference]: Finished difference Result 514 states and 2221 transitions. [2021-10-06 21:26:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:19,996 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 [2021-10-06 21:26:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:20,003 INFO L225 Difference]: With dead ends: 514 [2021-10-06 21:26:20,003 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 21:26:20,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:20,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 21:26:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2021-10-06 21:26:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 509 states have (on average 4.363457760314342) internal successors, (2221), 513 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 2221 transitions. [2021-10-06 21:26:20,029 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 2221 transitions. Word has length 7 [2021-10-06 21:26:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:20,030 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 2221 transitions. [2021-10-06 21:26:20,030 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) [2021-10-06 21:26:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 2221 transitions. [2021-10-06 21:26:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:26:20,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:20,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:20,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:20,251 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 [2021-10-06 21:26:20,252 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:20,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:20,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1409642575, now seen corresponding path program 1 times [2021-10-06 21:26:20,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:20,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594435881] [2021-10-06 21:26:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:20,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:20,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:20,256 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) [2021-10-06 21:26:20,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:26:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:20,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:26:20,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:20,494 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 21:26:20,494 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 [2021-10-06 21:26:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:20,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:20,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:20,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594435881] [2021-10-06 21:26:20,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594435881] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:20,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:20,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:20,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41928175] [2021-10-06 21:26:20,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:20,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:20,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:20,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:20,688 INFO L87 Difference]: Start difference. First operand 514 states and 2221 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) [2021-10-06 21:26:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:20,737 INFO L93 Difference]: Finished difference Result 484 states and 2107 transitions. [2021-10-06 21:26:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:20,738 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 [2021-10-06 21:26:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:20,744 INFO L225 Difference]: With dead ends: 484 [2021-10-06 21:26:20,744 INFO L226 Difference]: Without dead ends: 484 [2021-10-06 21:26:20,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:20,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-06 21:26:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-06 21:26:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 4.38045738045738) internal successors, (2107), 483 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 2107 transitions. [2021-10-06 21:26:20,771 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 2107 transitions. Word has length 7 [2021-10-06 21:26:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:20,771 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 2107 transitions. [2021-10-06 21:26:20,771 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) [2021-10-06 21:26:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 2107 transitions. [2021-10-06 21:26:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:26:20,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:20,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:20,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-06 21:26:20,985 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 [2021-10-06 21:26:20,985 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:20,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:20,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1751827016, now seen corresponding path program 1 times [2021-10-06 21:26:20,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:20,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074864810] [2021-10-06 21:26:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:20,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:20,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:20,988 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) [2021-10-06 21:26:21,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:26:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:21,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:21,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:21,274 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-06 21:26:21,275 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 42 treesize of output 74 [2021-10-06 21:26:21,279 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 212 treesize of output 204 [2021-10-06 21:26:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:22,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:22,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:22,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074864810] [2021-10-06 21:26:22,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074864810] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:22,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:22,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:22,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123561238] [2021-10-06 21:26:22,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:22,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:22,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:22,437 INFO L87 Difference]: Start difference. First operand 484 states and 2107 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-06 21:26:22,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:22,474 INFO L93 Difference]: Finished difference Result 403 states and 1702 transitions. [2021-10-06 21:26:22,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:22,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 [2021-10-06 21:26:22,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:22,480 INFO L225 Difference]: With dead ends: 403 [2021-10-06 21:26:22,480 INFO L226 Difference]: Without dead ends: 403 [2021-10-06 21:26:22,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-06 21:26:22,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-06 21:26:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 4.2443890274314215) internal successors, (1702), 402 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1702 transitions. [2021-10-06 21:26:22,500 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1702 transitions. Word has length 9 [2021-10-06 21:26:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:22,501 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 1702 transitions. [2021-10-06 21:26:22,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-06 21:26:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1702 transitions. [2021-10-06 21:26:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:26:22,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:22,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:22,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:22,715 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 [2021-10-06 21:26:22,715 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:26:22,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:22,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1751827017, now seen corresponding path program 1 times [2021-10-06 21:26:22,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:22,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163275037] [2021-10-06 21:26:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:22,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:22,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:22,718 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) [2021-10-06 21:26:22,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:26:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:22,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:22,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:23,019 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:26:23,020 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 [2021-10-06 21:26:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:23,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:23,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:23,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163275037] [2021-10-06 21:26:23,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163275037] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:23,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:23,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:26:23,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270805114] [2021-10-06 21:26:23,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:26:23,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:23,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:26:23,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:23,539 INFO L87 Difference]: Start difference. First operand 403 states and 1702 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) [2021-10-06 21:26:23,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:23,577 INFO L93 Difference]: Finished difference Result 322 states and 1297 transitions. [2021-10-06 21:26:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:23,577 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 [2021-10-06 21:26:23,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:23,581 INFO L225 Difference]: With dead ends: 322 [2021-10-06 21:26:23,581 INFO L226 Difference]: Without dead ends: 322 [2021-10-06 21:26:23,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-06 21:26:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-06 21:26:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1297 transitions. [2021-10-06 21:26:23,596 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1297 transitions. Word has length 9 [2021-10-06 21:26:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:23,596 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1297 transitions. [2021-10-06 21:26:23,596 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) [2021-10-06 21:26:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1297 transitions. [2021-10-06 21:26:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:26:23,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:23,600 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] [2021-10-06 21:26:23,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:23,812 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 [2021-10-06 21:26:23,813 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)] === [2021-10-06 21:26:23,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:23,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1496412105, now seen corresponding path program 1 times [2021-10-06 21:26:23,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:23,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588161548] [2021-10-06 21:26:23,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:23,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:23,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:23,816 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) [2021-10-06 21:26:23,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:26:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:23,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:26:23,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:24,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:24,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:24,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588161548] [2021-10-06 21:26:24,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588161548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:24,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:24,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:24,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643472837] [2021-10-06 21:26:24,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:24,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:24,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:24,165 INFO L87 Difference]: Start difference. First operand 322 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2021-10-06 21:26:24,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:24,191 INFO L93 Difference]: Finished difference Result 609 states and 2288 transitions. [2021-10-06 21:26:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:24,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 [2021-10-06 21:26:24,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:24,198 INFO L225 Difference]: With dead ends: 609 [2021-10-06 21:26:24,198 INFO L226 Difference]: Without dead ends: 554 [2021-10-06 21:26:24,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-06 21:26:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2021-10-06 21:26:24,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 3.815551537070524) internal successors, (2110), 553 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2110 transitions. [2021-10-06 21:26:24,226 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2110 transitions. Word has length 25 [2021-10-06 21:26:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:24,227 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 2110 transitions. [2021-10-06 21:26:24,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2021-10-06 21:26:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2110 transitions. [2021-10-06 21:26:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:24,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:24,230 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, 1] [2021-10-06 21:26:24,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:24,443 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 [2021-10-06 21:26:24,444 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)] === [2021-10-06 21:26:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:24,444 INFO L82 PathProgramCache]: Analyzing trace with hash 444267518, now seen corresponding path program 1 times [2021-10-06 21:26:24,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:24,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141875405] [2021-10-06 21:26:24,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:24,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:24,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:24,447 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) [2021-10-06 21:26:24,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:26:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:24,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:24,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:24,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:24,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:24,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141875405] [2021-10-06 21:26:24,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141875405] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:24,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:24,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:26:24,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440381366] [2021-10-06 21:26:24,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:26:24,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:24,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:26:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:24,802 INFO L87 Difference]: Start difference. First operand 554 states and 2110 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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) [2021-10-06 21:26:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:25,096 INFO L93 Difference]: Finished difference Result 1138 states and 4453 transitions. [2021-10-06 21:26:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:25,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 26 [2021-10-06 21:26:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:25,109 INFO L225 Difference]: With dead ends: 1138 [2021-10-06 21:26:25,109 INFO L226 Difference]: Without dead ends: 1138 [2021-10-06 21:26:25,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-10-06 21:26:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 614. [2021-10-06 21:26:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 3.895595432300163) internal successors, (2388), 613 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 2388 transitions. [2021-10-06 21:26:25,149 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 2388 transitions. Word has length 26 [2021-10-06 21:26:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:25,150 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 2388 transitions. [2021-10-06 21:26:25,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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) [2021-10-06 21:26:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 2388 transitions. [2021-10-06 21:26:25,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:25,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:25,153 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, 1] [2021-10-06 21:26:25,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:25,366 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 [2021-10-06 21:26:25,367 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)] === [2021-10-06 21:26:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:25,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2052716272, now seen corresponding path program 1 times [2021-10-06 21:26:25,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:25,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173234389] [2021-10-06 21:26:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:25,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:25,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:25,371 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) [2021-10-06 21:26:25,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:26:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:25,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:25,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:25,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:25,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:25,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173234389] [2021-10-06 21:26:25,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173234389] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:25,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:25,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-06 21:26:25,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582966755] [2021-10-06 21:26:25,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:26:25,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:26:25,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:25,649 INFO L87 Difference]: Start difference. First operand 614 states and 2388 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:25,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:25,809 INFO L93 Difference]: Finished difference Result 826 states and 3119 transitions. [2021-10-06 21:26:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:26:25,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-10-06 21:26:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:25,818 INFO L225 Difference]: With dead ends: 826 [2021-10-06 21:26:25,818 INFO L226 Difference]: Without dead ends: 722 [2021-10-06 21:26:25,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 62.5ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:26:25,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-10-06 21:26:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 564. [2021-10-06 21:26:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 3.9289520426287745) internal successors, (2212), 563 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 2212 transitions. [2021-10-06 21:26:25,845 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 2212 transitions. Word has length 26 [2021-10-06 21:26:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:25,846 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 2212 transitions. [2021-10-06 21:26:25,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 2212 transitions. [2021-10-06 21:26:25,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:25,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:25,849 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, 1, 1, 1] [2021-10-06 21:26:25,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:26,063 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 [2021-10-06 21:26:26,063 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)] === [2021-10-06 21:26:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:26,064 INFO L82 PathProgramCache]: Analyzing trace with hash 642903934, now seen corresponding path program 2 times [2021-10-06 21:26:26,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:26,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330961285] [2021-10-06 21:26:26,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:26,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:26,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:26,066 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) [2021-10-06 21:26:26,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:26:26,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:26,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:26,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:26,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:26,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:26,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:26,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330961285] [2021-10-06 21:26:26,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330961285] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:26,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:26,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:26:26,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492723950] [2021-10-06 21:26:26,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:26:26,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:26:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:26:26,483 INFO L87 Difference]: Start difference. First operand 564 states and 2212 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:26,772 INFO L93 Difference]: Finished difference Result 1074 states and 4060 transitions. [2021-10-06 21:26:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:26:26,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-10-06 21:26:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:26,787 INFO L225 Difference]: With dead ends: 1074 [2021-10-06 21:26:26,787 INFO L226 Difference]: Without dead ends: 1002 [2021-10-06 21:26:26,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-10-06 21:26:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 636. [2021-10-06 21:26:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 3.995275590551181) internal successors, (2537), 635 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 2537 transitions. [2021-10-06 21:26:26,820 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 2537 transitions. Word has length 26 [2021-10-06 21:26:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:26,821 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 2537 transitions. [2021-10-06 21:26:26,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 2537 transitions. [2021-10-06 21:26:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:26,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:26,824 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, 1] [2021-10-06 21:26:26,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:27,040 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 [2021-10-06 21:26:27,041 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)] === [2021-10-06 21:26:27,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2062591746, now seen corresponding path program 3 times [2021-10-06 21:26:27,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:27,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795108092] [2021-10-06 21:26:27,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:27,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:27,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:27,044 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) [2021-10-06 21:26:27,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:26:27,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:27,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:27,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:27,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:27,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:27,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:27,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795108092] [2021-10-06 21:26:27,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795108092] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:26:27,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:26:27,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-10-06 21:26:27,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70097660] [2021-10-06 21:26:27,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:26:27,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:26:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:26:27,434 INFO L87 Difference]: Start difference. First operand 636 states and 2537 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:27,515 INFO L93 Difference]: Finished difference Result 866 states and 3462 transitions. [2021-10-06 21:26:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:26:27,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2021-10-06 21:26:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:27,526 INFO L225 Difference]: With dead ends: 866 [2021-10-06 21:26:27,526 INFO L226 Difference]: Without dead ends: 866 [2021-10-06 21:26:27,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:26:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-10-06 21:26:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 660. [2021-10-06 21:26:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 4.045523520485585) internal successors, (2666), 659 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2666 transitions. [2021-10-06 21:26:27,563 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2666 transitions. Word has length 26 [2021-10-06 21:26:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:27,563 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2666 transitions. [2021-10-06 21:26:27,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2666 transitions. [2021-10-06 21:26:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:27,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:27,569 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, 1] [2021-10-06 21:26:27,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-06 21:26:27,782 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 [2021-10-06 21:26:27,783 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)] === [2021-10-06 21:26:27,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:27,783 INFO L82 PathProgramCache]: Analyzing trace with hash -129181816, now seen corresponding path program 2 times [2021-10-06 21:26:27,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:27,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524863955] [2021-10-06 21:26:27,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:27,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:27,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:27,787 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) [2021-10-06 21:26:27,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:26:27,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:27,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:27,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:27,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:28,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:28,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:28,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524863955] [2021-10-06 21:26:28,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524863955] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:28,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:28,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:26:28,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754463303] [2021-10-06 21:26:28,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:26:28,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:28,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:26:28,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:28,199 INFO L87 Difference]: Start difference. First operand 660 states and 2666 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:28,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:28,481 INFO L93 Difference]: Finished difference Result 1266 states and 5062 transitions. [2021-10-06 21:26:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:28,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:26:28,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:28,496 INFO L225 Difference]: With dead ends: 1266 [2021-10-06 21:26:28,496 INFO L226 Difference]: Without dead ends: 1266 [2021-10-06 21:26:28,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-10-06 21:26:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 754. [2021-10-06 21:26:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 4.189907038512616) internal successors, (3155), 753 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 3155 transitions. [2021-10-06 21:26:28,537 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 3155 transitions. Word has length 26 [2021-10-06 21:26:28,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:28,537 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 3155 transitions. [2021-10-06 21:26:28,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:28,538 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 3155 transitions. [2021-10-06 21:26:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:28,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:28,542 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, 1] [2021-10-06 21:26:28,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:28,755 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 [2021-10-06 21:26:28,756 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)] === [2021-10-06 21:26:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1853857420, now seen corresponding path program 4 times [2021-10-06 21:26:28,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:28,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727323982] [2021-10-06 21:26:28,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:28,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:28,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:28,759 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) [2021-10-06 21:26:28,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:26:28,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:28,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:28,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:28,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:28,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:29,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:29,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727323982] [2021-10-06 21:26:29,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727323982] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:29,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:29,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-06 21:26:29,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164144270] [2021-10-06 21:26:29,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:26:29,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:29,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:26:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:29,050 INFO L87 Difference]: Start difference. First operand 754 states and 3155 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:29,202 INFO L93 Difference]: Finished difference Result 932 states and 3815 transitions. [2021-10-06 21:26:29,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:26:29,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-10-06 21:26:29,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:29,213 INFO L225 Difference]: With dead ends: 932 [2021-10-06 21:26:29,213 INFO L226 Difference]: Without dead ends: 884 [2021-10-06 21:26:29,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:26:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-10-06 21:26:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 730. [2021-10-06 21:26:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 4.203017832647462) internal successors, (3064), 729 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 3064 transitions. [2021-10-06 21:26:29,244 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 3064 transitions. Word has length 26 [2021-10-06 21:26:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:29,244 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 3064 transitions. [2021-10-06 21:26:29,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 3064 transitions. [2021-10-06 21:26:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:29,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:29,249 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, 1] [2021-10-06 21:26:29,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:29,459 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 [2021-10-06 21:26:29,460 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)] === [2021-10-06 21:26:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash -235365796, now seen corresponding path program 3 times [2021-10-06 21:26:29,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:29,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341110571] [2021-10-06 21:26:29,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:29,462 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:29,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:29,464 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) [2021-10-06 21:26:29,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:26:29,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:29,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:29,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:29,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:29,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:29,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:29,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341110571] [2021-10-06 21:26:29,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341110571] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:29,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:29,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:26:29,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611322221] [2021-10-06 21:26:29,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:26:29,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:26:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:29,878 INFO L87 Difference]: Start difference. First operand 730 states and 3064 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:30,167 INFO L93 Difference]: Finished difference Result 1228 states and 5087 transitions. [2021-10-06 21:26:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:30,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:26:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:30,180 INFO L225 Difference]: With dead ends: 1228 [2021-10-06 21:26:30,180 INFO L226 Difference]: Without dead ends: 1228 [2021-10-06 21:26:30,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 187.5ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:30,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-10-06 21:26:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 730. [2021-10-06 21:26:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 4.203017832647462) internal successors, (3064), 729 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 3064 transitions. [2021-10-06 21:26:30,215 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 3064 transitions. Word has length 26 [2021-10-06 21:26:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:30,216 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 3064 transitions. [2021-10-06 21:26:30,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 3064 transitions. [2021-10-06 21:26:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:30,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:30,219 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, 1] [2021-10-06 21:26:30,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:30,437 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 [2021-10-06 21:26:30,438 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)] === [2021-10-06 21:26:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1628095458, now seen corresponding path program 5 times [2021-10-06 21:26:30,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:30,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512317118] [2021-10-06 21:26:30,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:30,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:30,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:30,441 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) [2021-10-06 21:26:30,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:26:30,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:30,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:30,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:30,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:30,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:30,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:30,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512317118] [2021-10-06 21:26:30,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512317118] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:30,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:30,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:26:30,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10743035] [2021-10-06 21:26:30,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:26:30,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:26:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:26:30,747 INFO L87 Difference]: Start difference. First operand 730 states and 3064 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:30,976 INFO L93 Difference]: Finished difference Result 1098 states and 4308 transitions. [2021-10-06 21:26:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:30,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-10-06 21:26:30,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:30,983 INFO L225 Difference]: With dead ends: 1098 [2021-10-06 21:26:30,984 INFO L226 Difference]: Without dead ends: 1026 [2021-10-06 21:26:30,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:30,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-10-06 21:26:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 666. [2021-10-06 21:26:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 4.2406015037593985) internal successors, (2820), 665 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2820 transitions. [2021-10-06 21:26:31,016 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2820 transitions. Word has length 26 [2021-10-06 21:26:31,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:31,016 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2820 transitions. [2021-10-06 21:26:31,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2820 transitions. [2021-10-06 21:26:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:31,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:31,019 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, 1] [2021-10-06 21:26:31,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:31,232 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 [2021-10-06 21:26:31,233 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)] === [2021-10-06 21:26:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:31,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1247184026, now seen corresponding path program 6 times [2021-10-06 21:26:31,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:31,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121778283] [2021-10-06 21:26:31,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:31,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:31,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:31,236 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) [2021-10-06 21:26:31,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:26:31,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:26:31,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:31,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:31,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:31,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:31,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:31,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121778283] [2021-10-06 21:26:31,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121778283] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:26:31,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:26:31,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-10-06 21:26:31,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083488113] [2021-10-06 21:26:31,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:26:31,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:26:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:26:31,671 INFO L87 Difference]: Start difference. First operand 666 states and 2820 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:31,723 INFO L93 Difference]: Finished difference Result 842 states and 3476 transitions. [2021-10-06 21:26:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:26:31,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2021-10-06 21:26:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:31,730 INFO L225 Difference]: With dead ends: 842 [2021-10-06 21:26:31,730 INFO L226 Difference]: Without dead ends: 842 [2021-10-06 21:26:31,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:26:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-10-06 21:26:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 666. [2021-10-06 21:26:31,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 4.2406015037593985) internal successors, (2820), 665 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2820 transitions. [2021-10-06 21:26:31,765 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2820 transitions. Word has length 26 [2021-10-06 21:26:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:31,766 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2820 transitions. [2021-10-06 21:26:31,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2820 transitions. [2021-10-06 21:26:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:26:31,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:31,770 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, 1] [2021-10-06 21:26:31,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:31,983 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 [2021-10-06 21:26:31,984 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)] === [2021-10-06 21:26:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:31,985 INFO L82 PathProgramCache]: Analyzing trace with hash 856009708, now seen corresponding path program 4 times [2021-10-06 21:26:31,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:31,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331050493] [2021-10-06 21:26:31,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:31,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:31,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:31,988 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) [2021-10-06 21:26:31,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:26:32,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:32,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:32,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:32,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:32,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:32,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:32,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331050493] [2021-10-06 21:26:32,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331050493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:32,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:32,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:26:32,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807077989] [2021-10-06 21:26:32,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:26:32,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:32,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:26:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:32,389 INFO L87 Difference]: Start difference. First operand 666 states and 2820 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:32,679 INFO L93 Difference]: Finished difference Result 1290 states and 5286 transitions. [2021-10-06 21:26:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:32,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:26:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:32,688 INFO L225 Difference]: With dead ends: 1290 [2021-10-06 21:26:32,688 INFO L226 Difference]: Without dead ends: 1290 [2021-10-06 21:26:32,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 145.8ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-10-06 21:26:32,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 642. [2021-10-06 21:26:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 4.257410296411856) internal successors, (2729), 641 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2729 transitions. [2021-10-06 21:26:32,718 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2729 transitions. Word has length 26 [2021-10-06 21:26:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:32,719 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2729 transitions. [2021-10-06 21:26:32,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2729 transitions. [2021-10-06 21:26:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 21:26:32,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:32,722 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, 1, 1] [2021-10-06 21:26:32,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:32,935 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 [2021-10-06 21:26:32,936 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)] === [2021-10-06 21:26:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:32,936 INFO L82 PathProgramCache]: Analyzing trace with hash 2084242441, now seen corresponding path program 1 times [2021-10-06 21:26:32,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:32,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644246674] [2021-10-06 21:26:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:32,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:32,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:32,940 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) [2021-10-06 21:26:32,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:26:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:33,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:26:33,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:33,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:33,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:33,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644246674] [2021-10-06 21:26:33,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644246674] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:33,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:33,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-06 21:26:33,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727321544] [2021-10-06 21:26:33,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:26:33,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:26:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:33,427 INFO L87 Difference]: Start difference. First operand 642 states and 2729 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:33,552 INFO L93 Difference]: Finished difference Result 1651 states and 6560 transitions. [2021-10-06 21:26:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:26:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 27 [2021-10-06 21:26:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:33,559 INFO L225 Difference]: With dead ends: 1651 [2021-10-06 21:26:33,560 INFO L226 Difference]: Without dead ends: 1576 [2021-10-06 21:26:33,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-10-06 21:26:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1410. [2021-10-06 21:26:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 4.159687721788503) internal successors, (5861), 1409 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 5861 transitions. [2021-10-06 21:26:33,613 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 5861 transitions. Word has length 27 [2021-10-06 21:26:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:33,613 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 5861 transitions. [2021-10-06 21:26:33,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 5861 transitions. [2021-10-06 21:26:33,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 21:26:33,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:33,620 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, 1, 1, 1] [2021-10-06 21:26:33,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:33,832 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 [2021-10-06 21:26:33,833 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)] === [2021-10-06 21:26:33,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:33,834 INFO L82 PathProgramCache]: Analyzing trace with hash 830311757, now seen corresponding path program 7 times [2021-10-06 21:26:33,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:33,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660493803] [2021-10-06 21:26:33,835 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:26:33,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:33,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:33,836 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) [2021-10-06 21:26:33,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:26:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:34,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:34,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:34,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:34,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:34,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660493803] [2021-10-06 21:26:34,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660493803] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:34,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:34,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:26:34,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128152212] [2021-10-06 21:26:34,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:26:34,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:34,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:26:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:34,289 INFO L87 Difference]: Start difference. First operand 1410 states and 5861 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:34,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:34,838 INFO L93 Difference]: Finished difference Result 3774 states and 14914 transitions. [2021-10-06 21:26:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:26:34,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 27 [2021-10-06 21:26:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:34,859 INFO L225 Difference]: With dead ends: 3774 [2021-10-06 21:26:34,859 INFO L226 Difference]: Without dead ends: 3774 [2021-10-06 21:26:34,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 336.1ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:26:34,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2021-10-06 21:26:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 1872. [2021-10-06 21:26:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 4.296632816675575) internal successors, (8039), 1871 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 8039 transitions. [2021-10-06 21:26:34,966 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 8039 transitions. Word has length 27 [2021-10-06 21:26:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:34,966 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 8039 transitions. [2021-10-06 21:26:34,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 8039 transitions. [2021-10-06 21:26:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 21:26:34,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:34,975 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, 1, 1] [2021-10-06 21:26:34,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:35,190 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 [2021-10-06 21:26:35,190 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)] === [2021-10-06 21:26:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:35,191 INFO L82 PathProgramCache]: Analyzing trace with hash 185120259, now seen corresponding path program 2 times [2021-10-06 21:26:35,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:35,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873172884] [2021-10-06 21:26:35,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:35,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:35,193 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) [2021-10-06 21:26:35,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:26:35,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:35,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:35,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:26:35,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:35,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:35,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:35,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873172884] [2021-10-06 21:26:35,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873172884] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:35,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:35,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-06 21:26:35,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109398026] [2021-10-06 21:26:35,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:26:35,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:26:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:35,753 INFO L87 Difference]: Start difference. First operand 1872 states and 8039 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:35,893 INFO L93 Difference]: Finished difference Result 2935 states and 12338 transitions. [2021-10-06 21:26:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:26:35,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 27 [2021-10-06 21:26:35,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:35,909 INFO L225 Difference]: With dead ends: 2935 [2021-10-06 21:26:35,910 INFO L226 Difference]: Without dead ends: 2892 [2021-10-06 21:26:35,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2021-10-06 21:26:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2634. [2021-10-06 21:26:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 4.385871629320167) internal successors, (11548), 2633 states have internal predecessors, (11548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 11548 transitions. [2021-10-06 21:26:36,018 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 11548 transitions. Word has length 27 [2021-10-06 21:26:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:36,019 INFO L470 AbstractCegarLoop]: Abstraction has 2634 states and 11548 transitions. [2021-10-06 21:26:36,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 11548 transitions. [2021-10-06 21:26:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 21:26:36,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:36,031 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, 1, 1, 1] [2021-10-06 21:26:36,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:36,244 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 [2021-10-06 21:26:36,245 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)] === [2021-10-06 21:26:36,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:36,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1306477929, now seen corresponding path program 8 times [2021-10-06 21:26:36,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:36,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761351537] [2021-10-06 21:26:36,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:36,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:36,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:36,247 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) [2021-10-06 21:26:36,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:26:36,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:36,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:36,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:26:36,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:36,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:36,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:36,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761351537] [2021-10-06 21:26:36,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761351537] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:36,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:36,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-06 21:26:36,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327602874] [2021-10-06 21:26:36,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:26:36,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:36,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:26:36,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:26:36,741 INFO L87 Difference]: Start difference. First operand 2634 states and 11548 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:37,382 INFO L93 Difference]: Finished difference Result 6156 states and 25370 transitions. [2021-10-06 21:26:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:26:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 27 [2021-10-06 21:26:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:37,412 INFO L225 Difference]: With dead ends: 6156 [2021-10-06 21:26:37,413 INFO L226 Difference]: Without dead ends: 6156 [2021-10-06 21:26:37,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 353.1ms TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2021-10-06 21:26:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 2726. [2021-10-06 21:26:37,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2725 states have (on average 4.450642201834863) internal successors, (12128), 2725 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 12128 transitions. [2021-10-06 21:26:37,584 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 12128 transitions. Word has length 27 [2021-10-06 21:26:37,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:37,585 INFO L470 AbstractCegarLoop]: Abstraction has 2726 states and 12128 transitions. [2021-10-06 21:26:37,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 12128 transitions. [2021-10-06 21:26:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:37,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:37,597 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, 1, 1, 1, 1] [2021-10-06 21:26:37,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:37,810 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 [2021-10-06 21:26:37,810 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)] === [2021-10-06 21:26:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:37,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1233413616, now seen corresponding path program 3 times [2021-10-06 21:26:37,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:37,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251340259] [2021-10-06 21:26:37,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:37,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:37,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:37,814 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) [2021-10-06 21:26:37,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:26:38,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:38,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:38,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:38,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:38,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:38,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:38,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251340259] [2021-10-06 21:26:38,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251340259] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:38,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:38,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:26:38,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118098176] [2021-10-06 21:26:38,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:38,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:38,535 INFO L87 Difference]: Start difference. First operand 2726 states and 12128 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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) [2021-10-06 21:26:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:39,863 INFO L93 Difference]: Finished difference Result 10830 states and 45534 transitions. [2021-10-06 21:26:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:26:39,863 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 28 [2021-10-06 21:26:39,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:39,912 INFO L225 Difference]: With dead ends: 10830 [2021-10-06 21:26:39,912 INFO L226 Difference]: Without dead ends: 10830 [2021-10-06 21:26:39,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 995.0ms TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:26:39,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10830 states. [2021-10-06 21:26:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10830 to 3302. [2021-10-06 21:26:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 3301 states have (on average 4.334141169342623) internal successors, (14307), 3301 states have internal predecessors, (14307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 14307 transitions. [2021-10-06 21:26:40,191 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 14307 transitions. Word has length 28 [2021-10-06 21:26:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:40,191 INFO L470 AbstractCegarLoop]: Abstraction has 3302 states and 14307 transitions. [2021-10-06 21:26:40,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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) [2021-10-06 21:26:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 14307 transitions. [2021-10-06 21:26:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:40,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:40,205 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, 1, 1, 1, 1] [2021-10-06 21:26:40,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:40,418 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 [2021-10-06 21:26:40,419 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)] === [2021-10-06 21:26:40,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:40,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1383857502, now seen corresponding path program 4 times [2021-10-06 21:26:40,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:40,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379457647] [2021-10-06 21:26:40,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:40,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:40,422 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) [2021-10-06 21:26:40,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:26:40,653 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:40,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:40,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:26:40,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:40,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:40,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:40,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379457647] [2021-10-06 21:26:40,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379457647] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:40,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:40,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:26:40,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077889206] [2021-10-06 21:26:40,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:40,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:40,950 INFO L87 Difference]: Start difference. First operand 3302 states and 14307 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:41,291 INFO L93 Difference]: Finished difference Result 4464 states and 18750 transitions. [2021-10-06 21:26:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:26:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 28 [2021-10-06 21:26:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:41,305 INFO L225 Difference]: With dead ends: 4464 [2021-10-06 21:26:41,305 INFO L226 Difference]: Without dead ends: 4432 [2021-10-06 21:26:41,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 206.4ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:26:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2021-10-06 21:26:41,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3476. [2021-10-06 21:26:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 4.2779856115107915) internal successors, (14866), 3475 states have internal predecessors, (14866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 14866 transitions. [2021-10-06 21:26:41,442 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 14866 transitions. Word has length 28 [2021-10-06 21:26:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:41,443 INFO L470 AbstractCegarLoop]: Abstraction has 3476 states and 14866 transitions. [2021-10-06 21:26:41,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 14866 transitions. [2021-10-06 21:26:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:41,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:41,465 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, 1, 1, 1, 1] [2021-10-06 21:26:41,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:41,679 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 [2021-10-06 21:26:41,679 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)] === [2021-10-06 21:26:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1096629670, now seen corresponding path program 5 times [2021-10-06 21:26:41,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:41,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794335983] [2021-10-06 21:26:41,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:41,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:41,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:41,682 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) [2021-10-06 21:26:41,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:26:41,925 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:41,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:41,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:41,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:42,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:42,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:42,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794335983] [2021-10-06 21:26:42,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794335983] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:42,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:42,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:26:42,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78740257] [2021-10-06 21:26:42,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:42,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:42,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:42,422 INFO L87 Difference]: Start difference. First operand 3476 states and 14866 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:44,489 INFO L93 Difference]: Finished difference Result 10646 states and 44255 transitions. [2021-10-06 21:26:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:26:44,490 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 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 28 [2021-10-06 21:26:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:44,542 INFO L225 Difference]: With dead ends: 10646 [2021-10-06 21:26:44,542 INFO L226 Difference]: Without dead ends: 10646 [2021-10-06 21:26:44,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1540.8ms TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:26:44,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10646 states. [2021-10-06 21:26:44,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10646 to 3822. [2021-10-06 21:26:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3821 states have (on average 4.353834074849516) internal successors, (16636), 3821 states have internal predecessors, (16636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 16636 transitions. [2021-10-06 21:26:44,810 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 16636 transitions. Word has length 28 [2021-10-06 21:26:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 3822 states and 16636 transitions. [2021-10-06 21:26:44,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 16636 transitions. [2021-10-06 21:26:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:44,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:44,825 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, 1, 1, 1, 1] [2021-10-06 21:26:44,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:45,038 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 [2021-10-06 21:26:45,038 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)] === [2021-10-06 21:26:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:45,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2041660008, now seen corresponding path program 6 times [2021-10-06 21:26:45,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:45,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878431779] [2021-10-06 21:26:45,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:45,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:45,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:45,043 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) [2021-10-06 21:26:45,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:26:45,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:26:45,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:45,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:26:45,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:45,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:45,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:45,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878431779] [2021-10-06 21:26:45,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878431779] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:45,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:45,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:26:45,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639506849] [2021-10-06 21:26:45,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:45,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:45,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:45,869 INFO L87 Difference]: Start difference. First operand 3822 states and 16636 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-10-06 21:26:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:46,499 INFO L93 Difference]: Finished difference Result 5468 states and 23051 transitions. [2021-10-06 21:26:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:26:46,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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 28 [2021-10-06 21:26:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:46,518 INFO L225 Difference]: With dead ends: 5468 [2021-10-06 21:26:46,518 INFO L226 Difference]: Without dead ends: 5318 [2021-10-06 21:26:46,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 399.4ms TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:26:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2021-10-06 21:26:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 3942. [2021-10-06 21:26:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3941 states have (on average 4.381121542755646) internal successors, (17266), 3941 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 17266 transitions. [2021-10-06 21:26:46,774 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 17266 transitions. Word has length 28 [2021-10-06 21:26:46,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:46,774 INFO L470 AbstractCegarLoop]: Abstraction has 3942 states and 17266 transitions. [2021-10-06 21:26:46,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-10-06 21:26:46,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 17266 transitions. [2021-10-06 21:26:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:46,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:46,789 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, 1, 1, 1, 1] [2021-10-06 21:26:46,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-06 21:26:47,002 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 [2021-10-06 21:26:47,003 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)] === [2021-10-06 21:26:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1162431498, now seen corresponding path program 7 times [2021-10-06 21:26:47,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:47,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965161530] [2021-10-06 21:26:47,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:26:47,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:47,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:47,007 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) [2021-10-06 21:26:47,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:26:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:47,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:26:47,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:47,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:47,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:47,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965161530] [2021-10-06 21:26:47,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965161530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:47,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:47,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:26:47,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577564961] [2021-10-06 21:26:47,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:47,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:47,547 INFO L87 Difference]: Start difference. First operand 3942 states and 17266 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:26:47,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:47,987 INFO L93 Difference]: Finished difference Result 5388 states and 23380 transitions. [2021-10-06 21:26:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:26:47,988 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:26:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:48,010 INFO L225 Difference]: With dead ends: 5388 [2021-10-06 21:26:48,010 INFO L226 Difference]: Without dead ends: 5372 [2021-10-06 21:26:48,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 314.3ms TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-10-06 21:26:48,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 4198. [2021-10-06 21:26:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4198 states, 4197 states have (on average 4.433166547533953) internal successors, (18606), 4197 states have internal predecessors, (18606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:48,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 18606 transitions. [2021-10-06 21:26:48,198 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 18606 transitions. Word has length 28 [2021-10-06 21:26:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:48,198 INFO L470 AbstractCegarLoop]: Abstraction has 4198 states and 18606 transitions. [2021-10-06 21:26:48,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:26:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 18606 transitions. [2021-10-06 21:26:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:48,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:48,215 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, 1, 1, 1, 1] [2021-10-06 21:26:48,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-06 21:26:48,428 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 [2021-10-06 21:26:48,428 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)] === [2021-10-06 21:26:48,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:48,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1712847986, now seen corresponding path program 8 times [2021-10-06 21:26:48,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:48,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997237832] [2021-10-06 21:26:48,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:48,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:48,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:48,431 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) [2021-10-06 21:26:48,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:26:48,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:48,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:48,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:48,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:48,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:49,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:49,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997237832] [2021-10-06 21:26:49,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997237832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:49,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:49,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-06 21:26:49,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623955356] [2021-10-06 21:26:49,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:26:49,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:26:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:49,112 INFO L87 Difference]: Start difference. First operand 4198 states and 18606 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-10-06 21:26:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:51,086 INFO L93 Difference]: Finished difference Result 13412 states and 55310 transitions. [2021-10-06 21:26:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:26:51,087 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 28 [2021-10-06 21:26:51,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:51,203 INFO L225 Difference]: With dead ends: 13412 [2021-10-06 21:26:51,203 INFO L226 Difference]: Without dead ends: 13300 [2021-10-06 21:26:51,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1517.5ms TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:26:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13300 states. [2021-10-06 21:26:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13300 to 4568. [2021-10-06 21:26:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4567 states have (on average 4.530545215677688) internal successors, (20691), 4567 states have internal predecessors, (20691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 20691 transitions. [2021-10-06 21:26:51,500 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 20691 transitions. Word has length 28 [2021-10-06 21:26:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:51,500 INFO L470 AbstractCegarLoop]: Abstraction has 4568 states and 20691 transitions. [2021-10-06 21:26:51,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-10-06 21:26:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 20691 transitions. [2021-10-06 21:26:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:51,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:51,516 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, 1, 1, 1, 1] [2021-10-06 21:26:51,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:51,716 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 [2021-10-06 21:26:51,717 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)] === [2021-10-06 21:26:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1518374774, now seen corresponding path program 9 times [2021-10-06 21:26:51,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:51,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211626865] [2021-10-06 21:26:51,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:51,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:51,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:51,720 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) [2021-10-06 21:26:51,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:26:52,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:52,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:52,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:26:52,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:52,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:52,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:52,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211626865] [2021-10-06 21:26:52,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211626865] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:52,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:52,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:26:52,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094751577] [2021-10-06 21:26:52,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:52,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:52,462 INFO L87 Difference]: Start difference. First operand 4568 states and 20691 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-10-06 21:26:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:54,476 INFO L93 Difference]: Finished difference Result 7456 states and 32590 transitions. [2021-10-06 21:26:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:26:54,477 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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 28 [2021-10-06 21:26:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:54,575 INFO L225 Difference]: With dead ends: 7456 [2021-10-06 21:26:54,576 INFO L226 Difference]: Without dead ends: 7390 [2021-10-06 21:26:54,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 976.1ms TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:26:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2021-10-06 21:26:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 5672. [2021-10-06 21:26:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5672 states, 5671 states have (on average 4.662317051666372) internal successors, (26440), 5671 states have internal predecessors, (26440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5672 states to 5672 states and 26440 transitions. [2021-10-06 21:26:54,822 INFO L78 Accepts]: Start accepts. Automaton has 5672 states and 26440 transitions. Word has length 28 [2021-10-06 21:26:54,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:54,822 INFO L470 AbstractCegarLoop]: Abstraction has 5672 states and 26440 transitions. [2021-10-06 21:26:54,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-10-06 21:26:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5672 states and 26440 transitions. [2021-10-06 21:26:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:54,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:54,845 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, 1, 1, 1, 1] [2021-10-06 21:26:54,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:55,058 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 [2021-10-06 21:26:55,059 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)] === [2021-10-06 21:26:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:55,060 INFO L82 PathProgramCache]: Analyzing trace with hash 639146264, now seen corresponding path program 10 times [2021-10-06 21:26:55,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:55,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308185929] [2021-10-06 21:26:55,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:55,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:55,063 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) [2021-10-06 21:26:55,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:26:55,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:55,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:55,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:26:55,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:55,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:55,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:55,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308185929] [2021-10-06 21:26:55,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308185929] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:55,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:55,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:26:55,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489590186] [2021-10-06 21:26:55,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:55,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:55,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:55,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:55,713 INFO L87 Difference]: Start difference. First operand 5672 states and 26440 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:26:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:56,699 INFO L93 Difference]: Finished difference Result 7580 states and 34108 transitions. [2021-10-06 21:26:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:26:56,710 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:26:56,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:56,754 INFO L225 Difference]: With dead ends: 7580 [2021-10-06 21:26:56,754 INFO L226 Difference]: Without dead ends: 7544 [2021-10-06 21:26:56,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 539.8ms TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:26:56,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7544 states. [2021-10-06 21:26:57,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7544 to 5868. [2021-10-06 21:26:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5868 states, 5867 states have (on average 4.706834838929606) internal successors, (27615), 5867 states have internal predecessors, (27615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5868 states to 5868 states and 27615 transitions. [2021-10-06 21:26:57,141 INFO L78 Accepts]: Start accepts. Automaton has 5868 states and 27615 transitions. Word has length 28 [2021-10-06 21:26:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:57,141 INFO L470 AbstractCegarLoop]: Abstraction has 5868 states and 27615 transitions. [2021-10-06 21:26:57,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:26:57,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5868 states and 27615 transitions. [2021-10-06 21:26:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:26:57,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:57,161 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, 1, 1, 1, 1] [2021-10-06 21:26:57,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:57,361 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 [2021-10-06 21:26:57,362 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)] === [2021-10-06 21:26:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:57,363 INFO L82 PathProgramCache]: Analyzing trace with hash -132939486, now seen corresponding path program 11 times [2021-10-06 21:26:57,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:57,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612992880] [2021-10-06 21:26:57,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:57,364 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:57,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:57,366 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) [2021-10-06 21:26:57,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:26:57,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:26:57,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:57,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:26:57,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:57,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:58,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:58,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612992880] [2021-10-06 21:26:58,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612992880] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:58,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:58,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:26:58,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775743008] [2021-10-06 21:26:58,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:58,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:58,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:58,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:58,241 INFO L87 Difference]: Start difference. First operand 5868 states and 27615 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:00,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:00,370 INFO L93 Difference]: Finished difference Result 11876 states and 52376 transitions. [2021-10-06 21:27:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:27:00,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 28 [2021-10-06 21:27:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:00,429 INFO L225 Difference]: With dead ends: 11876 [2021-10-06 21:27:00,429 INFO L226 Difference]: Without dead ends: 11876 [2021-10-06 21:27:00,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1690.7ms TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:27:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11876 states. [2021-10-06 21:27:00,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11876 to 6548. [2021-10-06 21:27:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6548 states, 6547 states have (on average 4.835497174278295) internal successors, (31658), 6547 states have internal predecessors, (31658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6548 states to 6548 states and 31658 transitions. [2021-10-06 21:27:00,809 INFO L78 Accepts]: Start accepts. Automaton has 6548 states and 31658 transitions. Word has length 28 [2021-10-06 21:27:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:00,809 INFO L470 AbstractCegarLoop]: Abstraction has 6548 states and 31658 transitions. [2021-10-06 21:27:00,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6548 states and 31658 transitions. [2021-10-06 21:27:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:00,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:00,828 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, 1, 1, 1, 1] [2021-10-06 21:27:00,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:01,029 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 [2021-10-06 21:27:01,029 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)] === [2021-10-06 21:27:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:01,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1338549992, now seen corresponding path program 12 times [2021-10-06 21:27:01,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:01,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306947107] [2021-10-06 21:27:01,032 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:01,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:01,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:01,033 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) [2021-10-06 21:27:01,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:27:01,393 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:27:01,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:01,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:27:01,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:01,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:01,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:01,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306947107] [2021-10-06 21:27:01,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306947107] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:01,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:01,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:27:01,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097129987] [2021-10-06 21:27:01,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:27:01,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:27:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:27:01,766 INFO L87 Difference]: Start difference. First operand 6548 states and 31658 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:03,317 INFO L93 Difference]: Finished difference Result 10002 states and 46278 transitions. [2021-10-06 21:27:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:27:03,318 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:27:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:03,354 INFO L225 Difference]: With dead ends: 10002 [2021-10-06 21:27:03,355 INFO L226 Difference]: Without dead ends: 9976 [2021-10-06 21:27:03,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 777.2ms TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9976 states. [2021-10-06 21:27:03,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9976 to 7520. [2021-10-06 21:27:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 7519 states have (on average 4.916345258678016) internal successors, (36966), 7519 states have internal predecessors, (36966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 36966 transitions. [2021-10-06 21:27:03,795 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 36966 transitions. Word has length 28 [2021-10-06 21:27:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:03,795 INFO L470 AbstractCegarLoop]: Abstraction has 7520 states and 36966 transitions. [2021-10-06 21:27:03,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 36966 transitions. [2021-10-06 21:27:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:03,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:03,819 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, 1, 1, 1, 1] [2021-10-06 21:27:03,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:04,019 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 [2021-10-06 21:27:04,020 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)] === [2021-10-06 21:27:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1895768092, now seen corresponding path program 13 times [2021-10-06 21:27:04,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:04,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48106046] [2021-10-06 21:27:04,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:27:04,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:04,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:04,023 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) [2021-10-06 21:27:04,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:27:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:04,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:27:04,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:04,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:04,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:04,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48106046] [2021-10-06 21:27:04,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48106046] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:04,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:04,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:27:04,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013477546] [2021-10-06 21:27:04,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:27:04,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:27:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:27:04,671 INFO L87 Difference]: Start difference. First operand 7520 states and 36966 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:05,796 INFO L93 Difference]: Finished difference Result 11176 states and 51769 transitions. [2021-10-06 21:27:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:27:05,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:27:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:05,841 INFO L225 Difference]: With dead ends: 11176 [2021-10-06 21:27:05,841 INFO L226 Difference]: Without dead ends: 11132 [2021-10-06 21:27:05,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 604.4ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:27:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11132 states. [2021-10-06 21:27:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11132 to 7742. [2021-10-06 21:27:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7742 states, 7741 states have (on average 4.941997157989924) internal successors, (38256), 7741 states have internal predecessors, (38256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7742 states to 7742 states and 38256 transitions. [2021-10-06 21:27:06,179 INFO L78 Accepts]: Start accepts. Automaton has 7742 states and 38256 transitions. Word has length 28 [2021-10-06 21:27:06,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:06,179 INFO L470 AbstractCegarLoop]: Abstraction has 7742 states and 38256 transitions. [2021-10-06 21:27:06,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 7742 states and 38256 transitions. [2021-10-06 21:27:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:06,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:06,204 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, 1, 1, 1, 1] [2021-10-06 21:27:06,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:06,404 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 [2021-10-06 21:27:06,405 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)] === [2021-10-06 21:27:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:06,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1121271778, now seen corresponding path program 14 times [2021-10-06 21:27:06,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:06,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418978747] [2021-10-06 21:27:06,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:06,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:06,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:06,409 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) [2021-10-06 21:27:06,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:27:06,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:06,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:06,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:27:06,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:06,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:07,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:07,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418978747] [2021-10-06 21:27:07,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418978747] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:07,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:07,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:27:07,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031510387] [2021-10-06 21:27:07,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:27:07,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:27:07,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:27:07,209 INFO L87 Difference]: Start difference. First operand 7742 states and 38256 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:09,163 INFO L93 Difference]: Finished difference Result 11938 states and 56479 transitions. [2021-10-06 21:27:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:27:09,164 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 28 [2021-10-06 21:27:09,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:09,203 INFO L225 Difference]: With dead ends: 11938 [2021-10-06 21:27:09,203 INFO L226 Difference]: Without dead ends: 11938 [2021-10-06 21:27:09,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1143.4ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:27:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11938 states. [2021-10-06 21:27:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11938 to 9154. [2021-10-06 21:27:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9154 states, 9153 states have (on average 5.027641210532066) internal successors, (46018), 9153 states have internal predecessors, (46018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 46018 transitions. [2021-10-06 21:27:09,488 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 46018 transitions. Word has length 28 [2021-10-06 21:27:09,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:09,488 INFO L470 AbstractCegarLoop]: Abstraction has 9154 states and 46018 transitions. [2021-10-06 21:27:09,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 46018 transitions. [2021-10-06 21:27:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:09,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:09,511 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, 1, 1, 1, 1] [2021-10-06 21:27:09,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:09,711 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 [2021-10-06 21:27:09,712 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)] === [2021-10-06 21:27:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:09,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1920006980, now seen corresponding path program 15 times [2021-10-06 21:27:09,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:09,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374368582] [2021-10-06 21:27:09,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:09,714 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:09,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:09,715 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) [2021-10-06 21:27:09,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:27:10,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:27:10,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:10,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:27:10,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:10,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:10,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:10,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374368582] [2021-10-06 21:27:10,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374368582] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:10,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:10,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-06 21:27:10,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032261483] [2021-10-06 21:27:10,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:27:10,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:10,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:27:10,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:27:10,339 INFO L87 Difference]: Start difference. First operand 9154 states and 46018 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) [2021-10-06 21:27:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:10,621 INFO L93 Difference]: Finished difference Result 10512 states and 50952 transitions. [2021-10-06 21:27:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:27:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 28 [2021-10-06 21:27:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:10,659 INFO L225 Difference]: With dead ends: 10512 [2021-10-06 21:27:10,659 INFO L226 Difference]: Without dead ends: 10500 [2021-10-06 21:27:10,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 178.3ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:27:10,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10500 states. [2021-10-06 21:27:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10500 to 9176. [2021-10-06 21:27:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9176 states, 9175 states have (on average 5.022234332425068) internal successors, (46079), 9175 states have internal predecessors, (46079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 46079 transitions. [2021-10-06 21:27:11,015 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 46079 transitions. Word has length 28 [2021-10-06 21:27:11,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:11,015 INFO L470 AbstractCegarLoop]: Abstraction has 9176 states and 46079 transitions. [2021-10-06 21:27:11,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) [2021-10-06 21:27:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 46079 transitions. [2021-10-06 21:27:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:11,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:11,039 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, 1, 1, 1, 1] [2021-10-06 21:27:11,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:11,240 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 [2021-10-06 21:27:11,240 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)] === [2021-10-06 21:27:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:11,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1008593108, now seen corresponding path program 16 times [2021-10-06 21:27:11,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:11,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743336478] [2021-10-06 21:27:11,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:11,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:11,244 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) [2021-10-06 21:27:11,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:27:11,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:11,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:11,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:27:11,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:11,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:11,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:11,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743336478] [2021-10-06 21:27:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743336478] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:11,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:11,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:27:11,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620334045] [2021-10-06 21:27:11,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:27:11,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:11,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:27:11,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:27:11,908 INFO L87 Difference]: Start difference. First operand 9176 states and 46079 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:12,555 INFO L93 Difference]: Finished difference Result 13364 states and 64331 transitions. [2021-10-06 21:27:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:27:12,556 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 28 [2021-10-06 21:27:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:12,608 INFO L225 Difference]: With dead ends: 13364 [2021-10-06 21:27:12,609 INFO L226 Difference]: Without dead ends: 13364 [2021-10-06 21:27:12,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 478.3ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:27:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13364 states. [2021-10-06 21:27:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13364 to 9230. [2021-10-06 21:27:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9230 states, 9229 states have (on average 5.0244880268718175) internal successors, (46371), 9229 states have internal predecessors, (46371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 46371 transitions. [2021-10-06 21:27:13,074 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 46371 transitions. Word has length 28 [2021-10-06 21:27:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:13,074 INFO L470 AbstractCegarLoop]: Abstraction has 9230 states and 46371 transitions. [2021-10-06 21:27:13,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 46371 transitions. [2021-10-06 21:27:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:13,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:13,099 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, 1, 1, 1, 1] [2021-10-06 21:27:13,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:13,299 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 [2021-10-06 21:27:13,300 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)] === [2021-10-06 21:27:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:13,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1353650162, now seen corresponding path program 17 times [2021-10-06 21:27:13,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:13,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175953418] [2021-10-06 21:27:13,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:13,302 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:13,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:13,303 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) [2021-10-06 21:27:13,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:27:13,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:13,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:13,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:27:13,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:13,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:13,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:13,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175953418] [2021-10-06 21:27:13,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175953418] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:13,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:13,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:27:13,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631893715] [2021-10-06 21:27:13,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:27:13,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:13,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:27:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:27:13,934 INFO L87 Difference]: Start difference. First operand 9230 states and 46371 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:14,626 INFO L93 Difference]: Finished difference Result 12050 states and 56628 transitions. [2021-10-06 21:27:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:27:14,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:27:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:14,667 INFO L225 Difference]: With dead ends: 12050 [2021-10-06 21:27:14,667 INFO L226 Difference]: Without dead ends: 12032 [2021-10-06 21:27:14,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 401.2ms TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:27:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12032 states. [2021-10-06 21:27:15,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12032 to 9262. [2021-10-06 21:27:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9262 states, 9261 states have (on average 5.024619371558147) internal successors, (46533), 9261 states have internal predecessors, (46533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9262 states to 9262 states and 46533 transitions. [2021-10-06 21:27:15,139 INFO L78 Accepts]: Start accepts. Automaton has 9262 states and 46533 transitions. Word has length 28 [2021-10-06 21:27:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:15,139 INFO L470 AbstractCegarLoop]: Abstraction has 9262 states and 46533 transitions. [2021-10-06 21:27:15,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9262 states and 46533 transitions. [2021-10-06 21:27:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:15,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:15,179 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, 1, 1, 1, 1] [2021-10-06 21:27:15,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-10-06 21:27:15,392 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 [2021-10-06 21:27:15,393 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)] === [2021-10-06 21:27:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash -293000950, now seen corresponding path program 18 times [2021-10-06 21:27:15,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:15,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018576627] [2021-10-06 21:27:15,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:15,395 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:15,397 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) [2021-10-06 21:27:15,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:27:15,832 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:27:15,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:15,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:27:15,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:15,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:16,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:16,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018576627] [2021-10-06 21:27:16,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018576627] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:16,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:16,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:27:16,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651137058] [2021-10-06 21:27:16,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:27:16,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:27:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:27:16,163 INFO L87 Difference]: Start difference. First operand 9262 states and 46533 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:16,634 INFO L93 Difference]: Finished difference Result 11664 states and 55962 transitions. [2021-10-06 21:27:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:27:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:27:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:16,683 INFO L225 Difference]: With dead ends: 11664 [2021-10-06 21:27:16,683 INFO L226 Difference]: Without dead ends: 11620 [2021-10-06 21:27:16,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 259.8ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:27:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-10-06 21:27:17,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 9390. [2021-10-06 21:27:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9390 states, 9389 states have (on average 5.04505272126957) internal successors, (47368), 9389 states have internal predecessors, (47368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9390 states to 9390 states and 47368 transitions. [2021-10-06 21:27:17,163 INFO L78 Accepts]: Start accepts. Automaton has 9390 states and 47368 transitions. Word has length 28 [2021-10-06 21:27:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:17,163 INFO L470 AbstractCegarLoop]: Abstraction has 9390 states and 47368 transitions. [2021-10-06 21:27:17,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 9390 states and 47368 transitions. [2021-10-06 21:27:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:17,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:17,187 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, 1, 1, 1, 1] [2021-10-06 21:27:17,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-06 21:27:17,388 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 [2021-10-06 21:27:17,388 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)] === [2021-10-06 21:27:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:17,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1065086700, now seen corresponding path program 19 times [2021-10-06 21:27:17,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:17,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671497811] [2021-10-06 21:27:17,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:27:17,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:17,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:17,391 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) [2021-10-06 21:27:17,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:27:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:17,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:27:17,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:17,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:18,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:18,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671497811] [2021-10-06 21:27:18,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671497811] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:18,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:18,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:27:18,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110493030] [2021-10-06 21:27:18,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:27:18,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:27:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:27:18,154 INFO L87 Difference]: Start difference. First operand 9390 states and 47368 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:19,407 INFO L93 Difference]: Finished difference Result 13338 states and 63009 transitions. [2021-10-06 21:27:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:27:19,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 28 [2021-10-06 21:27:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:19,458 INFO L225 Difference]: With dead ends: 13338 [2021-10-06 21:27:19,458 INFO L226 Difference]: Without dead ends: 13338 [2021-10-06 21:27:19,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1006.1ms TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:27:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13338 states. [2021-10-06 21:27:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13338 to 9606. [2021-10-06 21:27:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9606 states, 9605 states have (on average 5.061322228006246) internal successors, (48614), 9605 states have internal predecessors, (48614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 48614 transitions. [2021-10-06 21:27:19,950 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 48614 transitions. Word has length 28 [2021-10-06 21:27:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:19,950 INFO L470 AbstractCegarLoop]: Abstraction has 9606 states and 48614 transitions. [2021-10-06 21:27:19,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 48614 transitions. [2021-10-06 21:27:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:19,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:19,974 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, 1, 1, 1, 1] [2021-10-06 21:27:19,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:20,175 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 [2021-10-06 21:27:20,175 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)] === [2021-10-06 21:27:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:20,176 INFO L82 PathProgramCache]: Analyzing trace with hash 481495364, now seen corresponding path program 20 times [2021-10-06 21:27:20,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:20,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204810097] [2021-10-06 21:27:20,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:20,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:20,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:20,178 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) [2021-10-06 21:27:20,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:27:20,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:20,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:20,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:27:20,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:20,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:20,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:20,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204810097] [2021-10-06 21:27:20,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204810097] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:20,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:20,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:27:20,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793375105] [2021-10-06 21:27:20,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:27:20,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:27:20,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:27:20,934 INFO L87 Difference]: Start difference. First operand 9606 states and 48614 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:21,775 INFO L93 Difference]: Finished difference Result 14360 states and 69340 transitions. [2021-10-06 21:27:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:27:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 28 [2021-10-06 21:27:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:21,835 INFO L225 Difference]: With dead ends: 14360 [2021-10-06 21:27:21,835 INFO L226 Difference]: Without dead ends: 14360 [2021-10-06 21:27:21,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 538.3ms TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:27:21,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14360 states. [2021-10-06 21:27:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14360 to 9712. [2021-10-06 21:27:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 9711 states have (on average 5.063845124086088) internal successors, (49175), 9711 states have internal predecessors, (49175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 49175 transitions. [2021-10-06 21:27:22,397 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 49175 transitions. Word has length 28 [2021-10-06 21:27:22,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:22,397 INFO L470 AbstractCegarLoop]: Abstraction has 9712 states and 49175 transitions. [2021-10-06 21:27:22,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 49175 transitions. [2021-10-06 21:27:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:22,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:22,427 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, 1, 1, 1, 1] [2021-10-06 21:27:22,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:22,628 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 [2021-10-06 21:27:22,628 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)] === [2021-10-06 21:27:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash -900343078, now seen corresponding path program 21 times [2021-10-06 21:27:22,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:22,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697593760] [2021-10-06 21:27:22,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:22,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:22,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:22,632 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) [2021-10-06 21:27:22,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:27:23,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:27:23,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:23,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:27:23,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:23,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:23,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:23,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697593760] [2021-10-06 21:27:23,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697593760] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:23,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:23,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:27:23,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296124509] [2021-10-06 21:27:23,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:27:23,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:23,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:27:23,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:27:23,496 INFO L87 Difference]: Start difference. First operand 9712 states and 49175 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-10-06 21:27:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:25,141 INFO L93 Difference]: Finished difference Result 12880 states and 61648 transitions. [2021-10-06 21:27:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:27:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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 28 [2021-10-06 21:27:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:25,191 INFO L225 Difference]: With dead ends: 12880 [2021-10-06 21:27:25,192 INFO L226 Difference]: Without dead ends: 12814 [2021-10-06 21:27:25,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 756.5ms TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12814 states. [2021-10-06 21:27:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12814 to 9776. [2021-10-06 21:27:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9776 states, 9775 states have (on average 5.0774424552429664) internal successors, (49632), 9775 states have internal predecessors, (49632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9776 states to 9776 states and 49632 transitions. [2021-10-06 21:27:25,694 INFO L78 Accepts]: Start accepts. Automaton has 9776 states and 49632 transitions. Word has length 28 [2021-10-06 21:27:25,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:25,695 INFO L470 AbstractCegarLoop]: Abstraction has 9776 states and 49632 transitions. [2021-10-06 21:27:25,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-10-06 21:27:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 9776 states and 49632 transitions. [2021-10-06 21:27:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:25,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:25,722 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, 1, 1, 1, 1] [2021-10-06 21:27:25,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:25,922 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 [2021-10-06 21:27:25,923 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)] === [2021-10-06 21:27:25,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:25,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1779571588, now seen corresponding path program 22 times [2021-10-06 21:27:25,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:25,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436674690] [2021-10-06 21:27:25,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:25,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:25,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:25,927 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) [2021-10-06 21:27:25,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:27:26,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:26,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:26,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:27:26,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:26,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:26,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:26,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436674690] [2021-10-06 21:27:26,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436674690] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:26,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:26,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:27:26,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204891241] [2021-10-06 21:27:26,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:27:26,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:27:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:27:26,623 INFO L87 Difference]: Start difference. First operand 9776 states and 49632 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:27,218 INFO L93 Difference]: Finished difference Result 11802 states and 57375 transitions. [2021-10-06 21:27:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:27:27,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:27:27,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:27,261 INFO L225 Difference]: With dead ends: 11802 [2021-10-06 21:27:27,261 INFO L226 Difference]: Without dead ends: 11766 [2021-10-06 21:27:27,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 419.3ms TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:27:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11766 states. [2021-10-06 21:27:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11766 to 9996. [2021-10-06 21:27:27,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9996 states, 9995 states have (on average 5.101650825412706) internal successors, (50991), 9995 states have internal predecessors, (50991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 50991 transitions. [2021-10-06 21:27:27,678 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 50991 transitions. Word has length 28 [2021-10-06 21:27:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:27,679 INFO L470 AbstractCegarLoop]: Abstraction has 9996 states and 50991 transitions. [2021-10-06 21:27:27,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 50991 transitions. [2021-10-06 21:27:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:27,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:27,703 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, 1, 1, 1, 1] [2021-10-06 21:27:27,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-06 21:27:27,904 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 [2021-10-06 21:27:27,904 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)] === [2021-10-06 21:27:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1743309958, now seen corresponding path program 23 times [2021-10-06 21:27:27,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:27,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032324051] [2021-10-06 21:27:27,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:27,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:27,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:27,907 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) [2021-10-06 21:27:27,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:27:28,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:27:28,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:28,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:27:28,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:28,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:28,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:28,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032324051] [2021-10-06 21:27:28,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032324051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:28,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:28,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:27:28,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734205446] [2021-10-06 21:27:28,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:27:28,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:27:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:27:28,828 INFO L87 Difference]: Start difference. First operand 9996 states and 50991 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:30,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:30,784 INFO L93 Difference]: Finished difference Result 15474 states and 72654 transitions. [2021-10-06 21:27:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:27:30,785 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 28 [2021-10-06 21:27:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:30,892 INFO L225 Difference]: With dead ends: 15474 [2021-10-06 21:27:30,892 INFO L226 Difference]: Without dead ends: 15474 [2021-10-06 21:27:30,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1449.7ms TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:27:30,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15474 states. [2021-10-06 21:27:31,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15474 to 10666. [2021-10-06 21:27:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10666 states, 10665 states have (on average 5.1551804969526485) internal successors, (54980), 10665 states have internal predecessors, (54980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10666 states to 10666 states and 54980 transitions. [2021-10-06 21:27:31,542 INFO L78 Accepts]: Start accepts. Automaton has 10666 states and 54980 transitions. Word has length 28 [2021-10-06 21:27:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:31,542 INFO L470 AbstractCegarLoop]: Abstraction has 10666 states and 54980 transitions. [2021-10-06 21:27:31,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 10666 states and 54980 transitions. [2021-10-06 21:27:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:31,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:31,571 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, 1, 1, 1, 1] [2021-10-06 21:27:31,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:31,772 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 [2021-10-06 21:27:31,772 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)] === [2021-10-06 21:27:31,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:31,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1080167860, now seen corresponding path program 24 times [2021-10-06 21:27:31,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:31,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949972976] [2021-10-06 21:27:31,774 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:31,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:31,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:31,775 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) [2021-10-06 21:27:31,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:27:32,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:27:32,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:32,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:27:32,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:32,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:32,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:32,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949972976] [2021-10-06 21:27:32,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949972976] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:32,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:32,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:27:32,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3004148] [2021-10-06 21:27:32,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:27:32,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:32,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:27:32,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:27:32,599 INFO L87 Difference]: Start difference. First operand 10666 states and 54980 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:34,326 INFO L93 Difference]: Finished difference Result 14570 states and 70976 transitions. [2021-10-06 21:27:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:27:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:27:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:34,428 INFO L225 Difference]: With dead ends: 14570 [2021-10-06 21:27:34,428 INFO L226 Difference]: Without dead ends: 14544 [2021-10-06 21:27:34,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 833.9ms TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:27:34,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14544 states. [2021-10-06 21:27:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14544 to 10726. [2021-10-06 21:27:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10726 states, 10725 states have (on average 5.175198135198135) internal successors, (55504), 10725 states have internal predecessors, (55504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10726 states to 10726 states and 55504 transitions. [2021-10-06 21:27:35,017 INFO L78 Accepts]: Start accepts. Automaton has 10726 states and 55504 transitions. Word has length 28 [2021-10-06 21:27:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:35,017 INFO L470 AbstractCegarLoop]: Abstraction has 10726 states and 55504 transitions. [2021-10-06 21:27:35,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 10726 states and 55504 transitions. [2021-10-06 21:27:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:35,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:35,051 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, 1, 1, 1, 1] [2021-10-06 21:27:35,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:35,251 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 [2021-10-06 21:27:35,252 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)] === [2021-10-06 21:27:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:35,253 INFO L82 PathProgramCache]: Analyzing trace with hash -19518648, now seen corresponding path program 25 times [2021-10-06 21:27:35,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:35,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13840103] [2021-10-06 21:27:35,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:27:35,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:35,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:35,255 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) [2021-10-06 21:27:35,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:27:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:35,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:27:35,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:35,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:36,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:36,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13840103] [2021-10-06 21:27:36,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13840103] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:36,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:36,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:27:36,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921082076] [2021-10-06 21:27:36,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:27:36,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:27:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:27:36,014 INFO L87 Difference]: Start difference. First operand 10726 states and 55504 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:37,072 INFO L93 Difference]: Finished difference Result 13400 states and 65706 transitions. [2021-10-06 21:27:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:27:37,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 28 [2021-10-06 21:27:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:37,124 INFO L225 Difference]: With dead ends: 13400 [2021-10-06 21:27:37,124 INFO L226 Difference]: Without dead ends: 13356 [2021-10-06 21:27:37,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 590.9ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:27:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13356 states. [2021-10-06 21:27:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13356 to 10736. [2021-10-06 21:27:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10736 states, 10735 states have (on average 5.182766651141127) internal successors, (55637), 10735 states have internal predecessors, (55637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 55637 transitions. [2021-10-06 21:27:37,566 INFO L78 Accepts]: Start accepts. Automaton has 10736 states and 55637 transitions. Word has length 28 [2021-10-06 21:27:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:37,566 INFO L470 AbstractCegarLoop]: Abstraction has 10736 states and 55637 transitions. [2021-10-06 21:27:37,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-10-06 21:27:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand 10736 states and 55637 transitions. [2021-10-06 21:27:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:37,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:37,594 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, 1, 1, 1, 1] [2021-10-06 21:27:37,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:37,795 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 [2021-10-06 21:27:37,795 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)] === [2021-10-06 21:27:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash 754977666, now seen corresponding path program 26 times [2021-10-06 21:27:37,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:37,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870385143] [2021-10-06 21:27:37,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:37,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:37,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:37,799 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) [2021-10-06 21:27:37,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:27:38,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:38,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:38,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:27:38,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:38,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:38,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:38,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870385143] [2021-10-06 21:27:38,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870385143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:38,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:38,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:27:38,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242351522] [2021-10-06 21:27:38,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:27:38,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:27:38,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:27:38,818 INFO L87 Difference]: Start difference. First operand 10736 states and 55637 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:41,242 INFO L93 Difference]: Finished difference Result 17224 states and 83058 transitions. [2021-10-06 21:27:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:27:41,244 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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 28 [2021-10-06 21:27:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:41,320 INFO L225 Difference]: With dead ends: 17224 [2021-10-06 21:27:41,320 INFO L226 Difference]: Without dead ends: 17224 [2021-10-06 21:27:41,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 1690.6ms TimeCoverageRelationStatistics Valid=334, Invalid=1388, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:27:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17224 states. [2021-10-06 21:27:41,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17224 to 11338. [2021-10-06 21:27:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11338 states, 11337 states have (on average 5.210196701067302) internal successors, (59068), 11337 states have internal predecessors, (59068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11338 states to 11338 states and 59068 transitions. [2021-10-06 21:27:41,945 INFO L78 Accepts]: Start accepts. Automaton has 11338 states and 59068 transitions. Word has length 28 [2021-10-06 21:27:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:41,946 INFO L470 AbstractCegarLoop]: Abstraction has 11338 states and 59068 transitions. [2021-10-06 21:27:41,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 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) [2021-10-06 21:27:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 11338 states and 59068 transitions. [2021-10-06 21:27:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:41,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:41,981 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, 1, 1, 1] [2021-10-06 21:27:41,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:42,182 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 [2021-10-06 21:27:42,182 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)] === [2021-10-06 21:27:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash -579064743, now seen corresponding path program 1 times [2021-10-06 21:27:42,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:42,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751961238] [2021-10-06 21:27:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:27:42,185 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:42,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:42,186 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) [2021-10-06 21:27:42,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:27:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:42,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:27:42,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:42,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:42,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:42,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751961238] [2021-10-06 21:27:42,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751961238] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:42,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:42,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-06 21:27:42,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016672907] [2021-10-06 21:27:42,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:27:42,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:27:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:27:42,874 INFO L87 Difference]: Start difference. First operand 11338 states and 59068 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2021-10-06 21:27:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:43,322 INFO L93 Difference]: Finished difference Result 15898 states and 81616 transitions. [2021-10-06 21:27:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:27:43,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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 28 [2021-10-06 21:27:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:43,428 INFO L225 Difference]: With dead ends: 15898 [2021-10-06 21:27:43,429 INFO L226 Difference]: Without dead ends: 15760 [2021-10-06 21:27:43,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:27:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15760 states. [2021-10-06 21:27:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15760 to 12706. [2021-10-06 21:27:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12706 states, 12705 states have (on average 5.181345926800472) internal successors, (65829), 12705 states have internal predecessors, (65829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12706 states to 12706 states and 65829 transitions. [2021-10-06 21:27:44,086 INFO L78 Accepts]: Start accepts. Automaton has 12706 states and 65829 transitions. Word has length 28 [2021-10-06 21:27:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:44,087 INFO L470 AbstractCegarLoop]: Abstraction has 12706 states and 65829 transitions. [2021-10-06 21:27:44,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2021-10-06 21:27:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 12706 states and 65829 transitions. [2021-10-06 21:27:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:44,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:44,125 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, 1, 1, 1] [2021-10-06 21:27:44,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:44,326 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 [2021-10-06 21:27:44,326 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)] === [2021-10-06 21:27:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:44,327 INFO L82 PathProgramCache]: Analyzing trace with hash -419408341, now seen corresponding path program 2 times [2021-10-06 21:27:44,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:44,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827732384] [2021-10-06 21:27:44,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:44,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:44,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:44,329 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) [2021-10-06 21:27:44,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:27:44,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:44,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:44,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:27:44,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:44,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:45,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:45,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827732384] [2021-10-06 21:27:45,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827732384] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:45,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:45,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:27:45,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173664415] [2021-10-06 21:27:45,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:27:45,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:27:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:27:45,059 INFO L87 Difference]: Start difference. First operand 12706 states and 65829 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:45,497 INFO L93 Difference]: Finished difference Result 21216 states and 108306 transitions. [2021-10-06 21:27:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:27:45,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 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 28 [2021-10-06 21:27:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:45,587 INFO L225 Difference]: With dead ends: 21216 [2021-10-06 21:27:45,587 INFO L226 Difference]: Without dead ends: 21108 [2021-10-06 21:27:45,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:27:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21108 states. [2021-10-06 21:27:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21108 to 14394. [2021-10-06 21:27:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14394 states, 14393 states have (on average 5.29945112207323) internal successors, (76275), 14393 states have internal predecessors, (76275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14394 states to 14394 states and 76275 transitions. [2021-10-06 21:27:46,350 INFO L78 Accepts]: Start accepts. Automaton has 14394 states and 76275 transitions. Word has length 28 [2021-10-06 21:27:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:46,351 INFO L470 AbstractCegarLoop]: Abstraction has 14394 states and 76275 transitions. [2021-10-06 21:27:46,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 14394 states and 76275 transitions. [2021-10-06 21:27:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:46,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:46,391 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, 1, 1, 1] [2021-10-06 21:27:46,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:46,597 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 [2021-10-06 21:27:46,597 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)] === [2021-10-06 21:27:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:46,598 INFO L82 PathProgramCache]: Analyzing trace with hash -910771679, now seen corresponding path program 1 times [2021-10-06 21:27:46,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:46,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844429064] [2021-10-06 21:27:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:27:46,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:46,601 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) [2021-10-06 21:27:46,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:27:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:47,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:27:47,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:47,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:47,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:47,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844429064] [2021-10-06 21:27:47,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844429064] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:47,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:47,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:27:47,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498430327] [2021-10-06 21:27:47,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:27:47,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:47,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:27:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:27:47,426 INFO L87 Difference]: Start difference. First operand 14394 states and 76275 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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) [2021-10-06 21:27:47,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:47,852 INFO L93 Difference]: Finished difference Result 25824 states and 133296 transitions. [2021-10-06 21:27:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:27:47,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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 28 [2021-10-06 21:27:47,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:48,167 INFO L225 Difference]: With dead ends: 25824 [2021-10-06 21:27:48,168 INFO L226 Difference]: Without dead ends: 25338 [2021-10-06 21:27:48,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 164.9ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:27:48,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25338 states. [2021-10-06 21:27:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25338 to 17402. [2021-10-06 21:27:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17402 states, 17401 states have (on average 5.390437331187862) internal successors, (93799), 17401 states have internal predecessors, (93799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17402 states to 17402 states and 93799 transitions. [2021-10-06 21:27:49,047 INFO L78 Accepts]: Start accepts. Automaton has 17402 states and 93799 transitions. Word has length 28 [2021-10-06 21:27:49,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:49,047 INFO L470 AbstractCegarLoop]: Abstraction has 17402 states and 93799 transitions. [2021-10-06 21:27:49,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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) [2021-10-06 21:27:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 17402 states and 93799 transitions. [2021-10-06 21:27:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:49,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:49,105 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, 1, 1, 1] [2021-10-06 21:27:49,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:49,306 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 [2021-10-06 21:27:49,306 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)] === [2021-10-06 21:27:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1636214525, now seen corresponding path program 3 times [2021-10-06 21:27:49,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:49,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219417080] [2021-10-06 21:27:49,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:49,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:49,309 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) [2021-10-06 21:27:49,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:27:49,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:27:49,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:49,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:27:49,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:50,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:50,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:50,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219417080] [2021-10-06 21:27:50,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219417080] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:50,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:50,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:27:50,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171053290] [2021-10-06 21:27:50,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:27:50,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:27:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:27:50,164 INFO L87 Difference]: Start difference. First operand 17402 states and 93799 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 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) [2021-10-06 21:27:50,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:50,813 INFO L93 Difference]: Finished difference Result 26190 states and 136916 transitions. [2021-10-06 21:27:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:27:50,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 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 28 [2021-10-06 21:27:50,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:50,928 INFO L225 Difference]: With dead ends: 26190 [2021-10-06 21:27:50,928 INFO L226 Difference]: Without dead ends: 26150 [2021-10-06 21:27:50,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:27:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26150 states. [2021-10-06 21:27:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26150 to 18624. [2021-10-06 21:27:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 18623 states have (on average 5.38522257423616) internal successors, (100289), 18623 states have internal predecessors, (100289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 100289 transitions. [2021-10-06 21:27:51,874 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 100289 transitions. Word has length 28 [2021-10-06 21:27:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:51,875 INFO L470 AbstractCegarLoop]: Abstraction has 18624 states and 100289 transitions. [2021-10-06 21:27:51,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 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) [2021-10-06 21:27:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 100289 transitions. [2021-10-06 21:27:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:51,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:51,931 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, 1, 1, 1] [2021-10-06 21:27:51,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:52,132 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 [2021-10-06 21:27:52,132 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)] === [2021-10-06 21:27:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1218354449, now seen corresponding path program 2 times [2021-10-06 21:27:52,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:52,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646322193] [2021-10-06 21:27:52,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:52,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:52,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:52,135 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) [2021-10-06 21:27:52,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:27:52,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:52,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:52,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:27:52,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:52,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:53,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:53,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646322193] [2021-10-06 21:27:53,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646322193] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:53,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:53,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:27:53,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002728138] [2021-10-06 21:27:53,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:27:53,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:27:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:27:53,124 INFO L87 Difference]: Start difference. First operand 18624 states and 100289 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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) [2021-10-06 21:27:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:53,665 INFO L93 Difference]: Finished difference Result 31102 states and 164635 transitions. [2021-10-06 21:27:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:27:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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 28 [2021-10-06 21:27:53,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:53,826 INFO L225 Difference]: With dead ends: 31102 [2021-10-06 21:27:53,826 INFO L226 Difference]: Without dead ends: 31022 [2021-10-06 21:27:53,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 348.3ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31022 states. [2021-10-06 21:27:54,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31022 to 18398. [2021-10-06 21:27:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18398 states, 18397 states have (on average 5.369734195792792) internal successors, (98787), 18397 states have internal predecessors, (98787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18398 states to 18398 states and 98787 transitions. [2021-10-06 21:27:54,921 INFO L78 Accepts]: Start accepts. Automaton has 18398 states and 98787 transitions. Word has length 28 [2021-10-06 21:27:54,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:54,921 INFO L470 AbstractCegarLoop]: Abstraction has 18398 states and 98787 transitions. [2021-10-06 21:27:54,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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) [2021-10-06 21:27:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 18398 states and 98787 transitions. [2021-10-06 21:27:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:54,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:54,980 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, 1, 1, 1] [2021-10-06 21:27:54,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:55,188 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 [2021-10-06 21:27:55,189 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)] === [2021-10-06 21:27:55,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:55,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1786091641, now seen corresponding path program 3 times [2021-10-06 21:27:55,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:55,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470487640] [2021-10-06 21:27:55,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:55,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:55,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:55,192 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) [2021-10-06 21:27:55,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:27:55,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:27:55,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:55,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:27:55,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:56,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:56,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:56,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470487640] [2021-10-06 21:27:56,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470487640] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:56,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:56,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-06 21:27:56,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75501281] [2021-10-06 21:27:56,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:27:56,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:27:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:27:56,077 INFO L87 Difference]: Start difference. First operand 18398 states and 98787 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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) [2021-10-06 21:27:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:56,364 INFO L93 Difference]: Finished difference Result 23156 states and 122682 transitions. [2021-10-06 21:27:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:27:56,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-10-06 21:27:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:56,464 INFO L225 Difference]: With dead ends: 23156 [2021-10-06 21:27:56,464 INFO L226 Difference]: Without dead ends: 23080 [2021-10-06 21:27:56,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:27:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23080 states. [2021-10-06 21:27:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23080 to 18920. [2021-10-06 21:27:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18920 states, 18919 states have (on average 5.370315555790476) internal successors, (101601), 18919 states have internal predecessors, (101601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18920 states to 18920 states and 101601 transitions. [2021-10-06 21:27:57,595 INFO L78 Accepts]: Start accepts. Automaton has 18920 states and 101601 transitions. Word has length 28 [2021-10-06 21:27:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:57,595 INFO L470 AbstractCegarLoop]: Abstraction has 18920 states and 101601 transitions. [2021-10-06 21:27:57,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 18920 states and 101601 transitions. [2021-10-06 21:27:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:27:57,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:57,653 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, 1, 1, 1] [2021-10-06 21:27:57,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:57,854 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 [2021-10-06 21:27:57,854 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)] === [2021-10-06 21:27:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:57,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1603108391, now seen corresponding path program 4 times [2021-10-06 21:27:57,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:57,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755043250] [2021-10-06 21:27:57,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:57,856 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:57,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:57,857 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) [2021-10-06 21:27:57,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:27:58,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:58,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:58,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:27:58,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:58,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:27:58,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:58,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755043250] [2021-10-06 21:27:58,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755043250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:58,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:58,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:27:58,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128012021] [2021-10-06 21:27:58,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:27:58,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:27:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:27:58,540 INFO L87 Difference]: Start difference. First operand 18920 states and 101601 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2021-10-06 21:27:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:59,224 INFO L93 Difference]: Finished difference Result 27760 states and 145464 transitions. [2021-10-06 21:27:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:27:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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 28 [2021-10-06 21:27:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:59,369 INFO L225 Difference]: With dead ends: 27760 [2021-10-06 21:27:59,369 INFO L226 Difference]: Without dead ends: 27652 [2021-10-06 21:27:59,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:27:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27652 states. [2021-10-06 21:28:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27652 to 19946. [2021-10-06 21:28:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19945 states have (on average 5.454750564051141) internal successors, (108795), 19945 states have internal predecessors, (108795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 108795 transitions. [2021-10-06 21:28:00,217 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 108795 transitions. Word has length 28 [2021-10-06 21:28:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:00,218 INFO L470 AbstractCegarLoop]: Abstraction has 19946 states and 108795 transitions. [2021-10-06 21:28:00,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2021-10-06 21:28:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 108795 transitions. [2021-10-06 21:28:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:28:00,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:00,535 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, 1, 1, 1] [2021-10-06 21:28:00,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:00,749 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 [2021-10-06 21:28:00,750 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)] === [2021-10-06 21:28:00,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:00,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2094471729, now seen corresponding path program 4 times [2021-10-06 21:28:00,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:00,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356044301] [2021-10-06 21:28:00,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:00,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:00,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:00,754 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) [2021-10-06 21:28:00,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:28:01,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:01,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:01,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:28:01,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:28:01,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:28:01,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:01,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356044301] [2021-10-06 21:28:01,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356044301] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:01,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:01,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:28:01,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546082116] [2021-10-06 21:28:01,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:28:01,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:01,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:28:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:01,513 INFO L87 Difference]: Start difference. First operand 19946 states and 108795 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:02,036 INFO L93 Difference]: Finished difference Result 30252 states and 159425 transitions. [2021-10-06 21:28:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:28:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 28 [2021-10-06 21:28:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:02,195 INFO L225 Difference]: With dead ends: 30252 [2021-10-06 21:28:02,196 INFO L226 Difference]: Without dead ends: 29776 [2021-10-06 21:28:02,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:28:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29776 states. [2021-10-06 21:28:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29776 to 20070. [2021-10-06 21:28:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20070 states, 20069 states have (on average 5.491404653943894) internal successors, (110207), 20069 states have internal predecessors, (110207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20070 states to 20070 states and 110207 transitions. [2021-10-06 21:28:03,345 INFO L78 Accepts]: Start accepts. Automaton has 20070 states and 110207 transitions. Word has length 28 [2021-10-06 21:28:03,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:03,346 INFO L470 AbstractCegarLoop]: Abstraction has 20070 states and 110207 transitions. [2021-10-06 21:28:03,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:03,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20070 states and 110207 transitions. [2021-10-06 21:28:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:28:03,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:03,404 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, 1, 1, 1] [2021-10-06 21:28:03,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-06 21:28:03,604 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 [2021-10-06 21:28:03,605 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)] === [2021-10-06 21:28:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:03,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1475052721, now seen corresponding path program 5 times [2021-10-06 21:28:03,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:03,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324123550] [2021-10-06 21:28:03,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:03,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:03,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:03,608 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) [2021-10-06 21:28:03,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:28:04,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:04,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:04,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:28:04,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:28:04,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:28:04,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:04,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324123550] [2021-10-06 21:28:04,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324123550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:04,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:04,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:28:04,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024753011] [2021-10-06 21:28:04,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:28:04,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:28:04,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:04,333 INFO L87 Difference]: Start difference. First operand 20070 states and 110207 transitions. Second operand has 10 states, 10 states have (on average 4.1) 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) [2021-10-06 21:28:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:05,151 INFO L93 Difference]: Finished difference Result 29936 states and 158479 transitions. [2021-10-06 21:28:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:28:05,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) 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 28 [2021-10-06 21:28:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:05,324 INFO L225 Difference]: With dead ends: 29936 [2021-10-06 21:28:05,324 INFO L226 Difference]: Without dead ends: 29896 [2021-10-06 21:28:05,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 145.2ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:28:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29896 states. [2021-10-06 21:28:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29896 to 19086. [2021-10-06 21:28:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19086 states, 19085 states have (on average 5.442598899659418) internal successors, (103872), 19085 states have internal predecessors, (103872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19086 states to 19086 states and 103872 transitions. [2021-10-06 21:28:06,707 INFO L78 Accepts]: Start accepts. Automaton has 19086 states and 103872 transitions. Word has length 28 [2021-10-06 21:28:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:06,707 INFO L470 AbstractCegarLoop]: Abstraction has 19086 states and 103872 transitions. [2021-10-06 21:28:06,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) 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) [2021-10-06 21:28:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 19086 states and 103872 transitions. [2021-10-06 21:28:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 21:28:06,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:06,787 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, 1, 1, 1] [2021-10-06 21:28:06,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:07,000 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 [2021-10-06 21:28:07,001 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)] === [2021-10-06 21:28:07,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:07,001 INFO L82 PathProgramCache]: Analyzing trace with hash -479960609, now seen corresponding path program 6 times [2021-10-06 21:28:07,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:07,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563187515] [2021-10-06 21:28:07,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:07,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:07,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:07,003 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) [2021-10-06 21:28:07,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:28:07,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:28:07,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:07,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:28:07,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:28:07,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:28:07,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:07,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563187515] [2021-10-06 21:28:07,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563187515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:07,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:07,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:28:07,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766855351] [2021-10-06 21:28:07,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:28:07,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:07,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:28:07,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:07,841 INFO L87 Difference]: Start difference. First operand 19086 states and 103872 transitions. Second operand has 10 states, 10 states have (on average 4.1) 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) [2021-10-06 21:28:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:08,264 INFO L93 Difference]: Finished difference Result 27192 states and 144576 transitions. [2021-10-06 21:28:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:28:08,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) 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 28 [2021-10-06 21:28:08,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:08,380 INFO L225 Difference]: With dead ends: 27192 [2021-10-06 21:28:08,380 INFO L226 Difference]: Without dead ends: 27142 [2021-10-06 21:28:08,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 140.5ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27142 states. [2021-10-06 21:28:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27142 to 18056. [2021-10-06 21:28:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18056 states, 18055 states have (on average 5.397895319855995) internal successors, (97459), 18055 states have internal predecessors, (97459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18056 states to 18056 states and 97459 transitions. [2021-10-06 21:28:09,423 INFO L78 Accepts]: Start accepts. Automaton has 18056 states and 97459 transitions. Word has length 28 [2021-10-06 21:28:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:09,423 INFO L470 AbstractCegarLoop]: Abstraction has 18056 states and 97459 transitions. [2021-10-06 21:28:09,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) 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) [2021-10-06 21:28:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 18056 states and 97459 transitions. [2021-10-06 21:28:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:28:09,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:09,472 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, 1, 1, 1, 1] [2021-10-06 21:28:09,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:09,673 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 [2021-10-06 21:28:09,673 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)] === [2021-10-06 21:28:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:09,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1615734839, now seen corresponding path program 27 times [2021-10-06 21:28:09,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:09,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047028172] [2021-10-06 21:28:09,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:09,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:09,676 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) [2021-10-06 21:28:09,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:28:10,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:28:10,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:10,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:10,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:10,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:10,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:10,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047028172] [2021-10-06 21:28:10,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047028172] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:10,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:10,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-06 21:28:10,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939938963] [2021-10-06 21:28:10,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:28:10,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:28:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:10,587 INFO L87 Difference]: Start difference. First operand 18056 states and 97459 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:11,280 INFO L93 Difference]: Finished difference Result 25849 states and 134581 transitions. [2021-10-06 21:28:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:28:11,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 29 [2021-10-06 21:28:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:11,416 INFO L225 Difference]: With dead ends: 25849 [2021-10-06 21:28:11,416 INFO L226 Difference]: Without dead ends: 25684 [2021-10-06 21:28:11,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25684 states. [2021-10-06 21:28:12,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25684 to 21692. [2021-10-06 21:28:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21692 states, 21691 states have (on average 5.368355539163709) internal successors, (116445), 21691 states have internal predecessors, (116445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21692 states to 21692 states and 116445 transitions. [2021-10-06 21:28:12,414 INFO L78 Accepts]: Start accepts. Automaton has 21692 states and 116445 transitions. Word has length 29 [2021-10-06 21:28:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:12,414 INFO L470 AbstractCegarLoop]: Abstraction has 21692 states and 116445 transitions. [2021-10-06 21:28:12,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand 21692 states and 116445 transitions. [2021-10-06 21:28:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:28:12,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:12,478 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, 1, 1, 1, 1] [2021-10-06 21:28:12,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:12,683 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 [2021-10-06 21:28:12,684 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)] === [2021-10-06 21:28:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:12,684 INFO L82 PathProgramCache]: Analyzing trace with hash 293652635, now seen corresponding path program 28 times [2021-10-06 21:28:12,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:12,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747279344] [2021-10-06 21:28:12,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:12,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:12,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:12,687 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) [2021-10-06 21:28:12,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:28:13,180 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:13,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:13,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:28:13,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:13,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:13,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:13,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747279344] [2021-10-06 21:28:13,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747279344] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:13,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:13,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:28:13,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882010887] [2021-10-06 21:28:13,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:13,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:13,764 INFO L87 Difference]: Start difference. First operand 21692 states and 116445 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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) [2021-10-06 21:28:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:16,094 INFO L93 Difference]: Finished difference Result 31958 states and 160628 transitions. [2021-10-06 21:28:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:28:16,095 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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 29 [2021-10-06 21:28:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:16,232 INFO L225 Difference]: With dead ends: 31958 [2021-10-06 21:28:16,232 INFO L226 Difference]: Without dead ends: 31958 [2021-10-06 21:28:16,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1582.2ms TimeCoverageRelationStatistics Valid=370, Invalid=1036, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:28:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31958 states. [2021-10-06 21:28:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31958 to 22484. [2021-10-06 21:28:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22484 states, 22483 states have (on average 5.406484899701997) internal successors, (121554), 22483 states have internal predecessors, (121554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22484 states to 22484 states and 121554 transitions. [2021-10-06 21:28:17,619 INFO L78 Accepts]: Start accepts. Automaton has 22484 states and 121554 transitions. Word has length 29 [2021-10-06 21:28:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:17,619 INFO L470 AbstractCegarLoop]: Abstraction has 22484 states and 121554 transitions. [2021-10-06 21:28:17,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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) [2021-10-06 21:28:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand 22484 states and 121554 transitions. [2021-10-06 21:28:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:28:17,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:17,695 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, 1, 1, 1, 1] [2021-10-06 21:28:17,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:17,896 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 [2021-10-06 21:28:17,896 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)] === [2021-10-06 21:28:17,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:17,898 INFO L82 PathProgramCache]: Analyzing trace with hash -889394441, now seen corresponding path program 29 times [2021-10-06 21:28:17,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:17,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584633532] [2021-10-06 21:28:17,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:17,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:17,900 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) [2021-10-06 21:28:17,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:28:18,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:28:18,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:18,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:18,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:18,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:28:18,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:18,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584633532] [2021-10-06 21:28:18,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584633532] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:18,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:18,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-06 21:28:18,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620385032] [2021-10-06 21:28:18,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:28:18,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:18,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:28:18,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:18,836 INFO L87 Difference]: Start difference. First operand 22484 states and 121554 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:19,680 INFO L93 Difference]: Finished difference Result 36444 states and 195253 transitions. [2021-10-06 21:28:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:28:19,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 29 [2021-10-06 21:28:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:19,913 INFO L225 Difference]: With dead ends: 36444 [2021-10-06 21:28:19,914 INFO L226 Difference]: Without dead ends: 36282 [2021-10-06 21:28:19,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36282 states. [2021-10-06 21:28:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36282 to 31290. [2021-10-06 21:28:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31290 states, 31289 states have (on average 5.5203426124197) internal successors, (172726), 31289 states have internal predecessors, (172726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31290 states to 31290 states and 172726 transitions. [2021-10-06 21:28:21,531 INFO L78 Accepts]: Start accepts. Automaton has 31290 states and 172726 transitions. Word has length 29 [2021-10-06 21:28:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:21,532 INFO L470 AbstractCegarLoop]: Abstraction has 31290 states and 172726 transitions. [2021-10-06 21:28:21,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 31290 states and 172726 transitions. [2021-10-06 21:28:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:28:21,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:21,639 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, 1, 1, 1, 1] [2021-10-06 21:28:21,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:21,853 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 [2021-10-06 21:28:21,853 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)] === [2021-10-06 21:28:21,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:21,854 INFO L82 PathProgramCache]: Analyzing trace with hash -504897491, now seen corresponding path program 30 times [2021-10-06 21:28:21,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:21,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395375324] [2021-10-06 21:28:21,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:21,855 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:21,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:21,856 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) [2021-10-06 21:28:21,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:28:22,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:28:22,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:22,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:22,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:22,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:22,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:22,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395375324] [2021-10-06 21:28:22,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395375324] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:22,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:22,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-06 21:28:22,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400108064] [2021-10-06 21:28:22,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:28:22,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:22,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:28:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:22,784 INFO L87 Difference]: Start difference. First operand 31290 states and 172726 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:23,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:23,756 INFO L93 Difference]: Finished difference Result 40705 states and 220831 transitions. [2021-10-06 21:28:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:28:23,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 29 [2021-10-06 21:28:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:23,990 INFO L225 Difference]: With dead ends: 40705 [2021-10-06 21:28:23,990 INFO L226 Difference]: Without dead ends: 40580 [2021-10-06 21:28:23,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40580 states. [2021-10-06 21:28:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40580 to 38980. [2021-10-06 21:28:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38980 states, 38979 states have (on average 5.530080299648529) internal successors, (215557), 38979 states have internal predecessors, (215557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38980 states to 38980 states and 215557 transitions. [2021-10-06 21:28:26,200 INFO L78 Accepts]: Start accepts. Automaton has 38980 states and 215557 transitions. Word has length 29 [2021-10-06 21:28:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:26,201 INFO L470 AbstractCegarLoop]: Abstraction has 38980 states and 215557 transitions. [2021-10-06 21:28:26,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 38980 states and 215557 transitions. [2021-10-06 21:28:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:28:26,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:26,406 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, 1, 1, 1, 1] [2021-10-06 21:28:26,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:26,606 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 [2021-10-06 21:28:26,607 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)] === [2021-10-06 21:28:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1899147279, now seen corresponding path program 31 times [2021-10-06 21:28:26,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:26,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372665911] [2021-10-06 21:28:26,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:26,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:26,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:26,610 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) [2021-10-06 21:28:26,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:28:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:27,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:28:27,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:27,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:27,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:27,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372665911] [2021-10-06 21:28:27,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372665911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:27,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:27,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:28:27,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653751565] [2021-10-06 21:28:27,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:27,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:27,720 INFO L87 Difference]: Start difference. First operand 38980 states and 215557 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-06 21:28:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:31,386 INFO L93 Difference]: Finished difference Result 55532 states and 284118 transitions. [2021-10-06 21:28:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:28:31,387 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 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 29 [2021-10-06 21:28:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:31,728 INFO L225 Difference]: With dead ends: 55532 [2021-10-06 21:28:31,728 INFO L226 Difference]: Without dead ends: 55532 [2021-10-06 21:28:31,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1877.3ms TimeCoverageRelationStatistics Valid=316, Invalid=740, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:28:31,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55532 states. [2021-10-06 21:28:33,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55532 to 40742. [2021-10-06 21:28:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40742 states, 40741 states have (on average 5.500036817947522) internal successors, (224077), 40741 states have internal predecessors, (224077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40742 states to 40742 states and 224077 transitions. [2021-10-06 21:28:34,287 INFO L78 Accepts]: Start accepts. Automaton has 40742 states and 224077 transitions. Word has length 29 [2021-10-06 21:28:34,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:34,287 INFO L470 AbstractCegarLoop]: Abstraction has 40742 states and 224077 transitions. [2021-10-06 21:28:34,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 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) [2021-10-06 21:28:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 40742 states and 224077 transitions. [2021-10-06 21:28:34,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:28:34,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:34,418 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, 1, 1, 1, 1] [2021-10-06 21:28:34,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:34,618 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 [2021-10-06 21:28:34,619 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)] === [2021-10-06 21:28:34,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:34,620 INFO L82 PathProgramCache]: Analyzing trace with hash 213997694, now seen corresponding path program 32 times [2021-10-06 21:28:34,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:34,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70966144] [2021-10-06 21:28:34,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:34,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:34,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:34,625 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) [2021-10-06 21:28:34,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:28:35,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:35,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:35,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:28:35,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:35,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:35,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:35,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70966144] [2021-10-06 21:28:35,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70966144] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:35,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:35,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:28:35,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72940907] [2021-10-06 21:28:35,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:28:35,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:28:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:28:35,799 INFO L87 Difference]: Start difference. First operand 40742 states and 224077 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 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) [2021-10-06 21:28:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:41,892 INFO L93 Difference]: Finished difference Result 150184 states and 800889 transitions. [2021-10-06 21:28:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:28:41,893 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 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 30 [2021-10-06 21:28:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:43,944 INFO L225 Difference]: With dead ends: 150184 [2021-10-06 21:28:43,944 INFO L226 Difference]: Without dead ends: 150184 [2021-10-06 21:28:43,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 2424.4ms TimeCoverageRelationStatistics Valid=693, Invalid=2387, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:28:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150184 states. [2021-10-06 21:28:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150184 to 42572. [2021-10-06 21:28:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42572 states, 42571 states have (on average 5.43752789457612) internal successors, (231481), 42571 states have internal predecessors, (231481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42572 states to 42572 states and 231481 transitions. [2021-10-06 21:28:48,758 INFO L78 Accepts]: Start accepts. Automaton has 42572 states and 231481 transitions. Word has length 30 [2021-10-06 21:28:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:48,758 INFO L470 AbstractCegarLoop]: Abstraction has 42572 states and 231481 transitions. [2021-10-06 21:28:48,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 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) [2021-10-06 21:28:48,759 INFO L276 IsEmpty]: Start isEmpty. Operand 42572 states and 231481 transitions. [2021-10-06 21:28:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:28:49,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:49,601 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, 1, 1, 1, 1] [2021-10-06 21:28:49,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:49,816 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 [2021-10-06 21:28:49,816 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)] === [2021-10-06 21:28:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:49,818 INFO L82 PathProgramCache]: Analyzing trace with hash 348514966, now seen corresponding path program 33 times [2021-10-06 21:28:49,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:49,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147987998] [2021-10-06 21:28:49,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:49,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:49,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:49,820 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) [2021-10-06 21:28:49,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:28:50,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:28:50,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:50,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:28:50,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:50,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:51,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:51,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147987998] [2021-10-06 21:28:51,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147987998] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:51,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:51,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:28:51,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191656743] [2021-10-06 21:28:51,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:28:51,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:28:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:28:51,178 INFO L87 Difference]: Start difference. First operand 42572 states and 231481 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:28:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:54,811 INFO L93 Difference]: Finished difference Result 69722 states and 358548 transitions. [2021-10-06 21:28:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:28:54,812 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 30 [2021-10-06 21:28:54,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:55,233 INFO L225 Difference]: With dead ends: 69722 [2021-10-06 21:28:55,234 INFO L226 Difference]: Without dead ends: 69722 [2021-10-06 21:28:55,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2293.0ms TimeCoverageRelationStatistics Valid=311, Invalid=1095, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:28:55,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69722 states. [2021-10-06 21:28:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69722 to 43486. [2021-10-06 21:28:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43486 states, 43485 states have (on average 5.424905139703346) internal successors, (235902), 43485 states have internal predecessors, (235902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43486 states to 43486 states and 235902 transitions. [2021-10-06 21:28:58,111 INFO L78 Accepts]: Start accepts. Automaton has 43486 states and 235902 transitions. Word has length 30 [2021-10-06 21:28:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:58,112 INFO L470 AbstractCegarLoop]: Abstraction has 43486 states and 235902 transitions. [2021-10-06 21:28:58,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:28:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 43486 states and 235902 transitions. [2021-10-06 21:28:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:28:58,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:58,772 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, 1, 1, 1, 1] [2021-10-06 21:28:58,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:58,973 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 [2021-10-06 21:28:58,973 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)] === [2021-10-06 21:28:58,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:58,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1148752824, now seen corresponding path program 34 times [2021-10-06 21:28:58,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:58,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610991531] [2021-10-06 21:28:58,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:58,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:58,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:58,977 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) [2021-10-06 21:28:58,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:28:59,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:59,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:59,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:59,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:59,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:00,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:00,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610991531] [2021-10-06 21:29:00,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610991531] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:00,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:00,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:29:00,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003291742] [2021-10-06 21:29:00,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:29:00,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:29:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:29:00,007 INFO L87 Difference]: Start difference. First operand 43486 states and 235902 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:29:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:02,376 INFO L93 Difference]: Finished difference Result 63594 states and 332070 transitions. [2021-10-06 21:29:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:29:02,377 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 30 [2021-10-06 21:29:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:02,778 INFO L225 Difference]: With dead ends: 63594 [2021-10-06 21:29:02,778 INFO L226 Difference]: Without dead ends: 63456 [2021-10-06 21:29:02,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1125.0ms TimeCoverageRelationStatistics Valid=309, Invalid=1331, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:29:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63456 states. [2021-10-06 21:29:05,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63456 to 45030. [2021-10-06 21:29:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45030 states, 45029 states have (on average 5.398698616447178) internal successors, (243098), 45029 states have internal predecessors, (243098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45030 states to 45030 states and 243098 transitions. [2021-10-06 21:29:05,621 INFO L78 Accepts]: Start accepts. Automaton has 45030 states and 243098 transitions. Word has length 30 [2021-10-06 21:29:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:05,621 INFO L470 AbstractCegarLoop]: Abstraction has 45030 states and 243098 transitions. [2021-10-06 21:29:05,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:29:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 45030 states and 243098 transitions. [2021-10-06 21:29:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:29:05,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:05,770 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, 1, 1, 1, 1] [2021-10-06 21:29:05,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2021-10-06 21:29:05,970 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 [2021-10-06 21:29:05,971 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)] === [2021-10-06 21:29:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:05,972 INFO L82 PathProgramCache]: Analyzing trace with hash -255225458, now seen corresponding path program 35 times [2021-10-06 21:29:05,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:05,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715582058] [2021-10-06 21:29:05,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:05,973 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:05,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:05,974 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) [2021-10-06 21:29:05,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:29:07,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:29:07,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:07,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:29:07,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:07,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:08,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:08,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715582058] [2021-10-06 21:29:08,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715582058] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:08,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:08,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:29:08,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963172754] [2021-10-06 21:29:08,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:29:08,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:08,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:29:08,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:29:08,021 INFO L87 Difference]: Start difference. First operand 45030 states and 243098 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:29:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:15,452 INFO L93 Difference]: Finished difference Result 152058 states and 785054 transitions. [2021-10-06 21:29:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:29:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 30 [2021-10-06 21:29:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:17,295 INFO L225 Difference]: With dead ends: 152058 [2021-10-06 21:29:17,295 INFO L226 Difference]: Without dead ends: 152052 [2021-10-06 21:29:17,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 4379.7ms TimeCoverageRelationStatistics Valid=696, Invalid=3210, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:29:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152052 states. [2021-10-06 21:29:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152052 to 47258. [2021-10-06 21:29:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47258 states, 47257 states have (on average 5.395031423916033) internal successors, (254953), 47257 states have internal predecessors, (254953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47258 states to 47258 states and 254953 transitions. [2021-10-06 21:29:22,719 INFO L78 Accepts]: Start accepts. Automaton has 47258 states and 254953 transitions. Word has length 30 [2021-10-06 21:29:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:22,719 INFO L470 AbstractCegarLoop]: Abstraction has 47258 states and 254953 transitions. [2021-10-06 21:29:22,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:29:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 47258 states and 254953 transitions. [2021-10-06 21:29:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:29:22,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:22,902 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, 1, 1, 1, 1] [2021-10-06 21:29:22,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:23,102 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 [2021-10-06 21:29:23,103 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)] === [2021-10-06 21:29:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1411903076, now seen corresponding path program 36 times [2021-10-06 21:29:23,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:23,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251757042] [2021-10-06 21:29:23,105 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:29:23,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:23,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:23,110 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) [2021-10-06 21:29:23,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:29:23,850 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:29:23,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:23,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:29:23,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:24,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:24,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:24,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251757042] [2021-10-06 21:29:24,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251757042] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:24,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:24,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:29:24,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911057567] [2021-10-06 21:29:24,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:29:24,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:29:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:29:24,267 INFO L87 Difference]: Start difference. First operand 47258 states and 254953 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:29:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:26,892 INFO L93 Difference]: Finished difference Result 70984 states and 364390 transitions. [2021-10-06 21:29:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:29:26,892 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 30 [2021-10-06 21:29:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:27,754 INFO L225 Difference]: With dead ends: 70984 [2021-10-06 21:29:27,754 INFO L226 Difference]: Without dead ends: 70484 [2021-10-06 21:29:27,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 839.4ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:29:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70484 states. [2021-10-06 21:29:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70484 to 46510. [2021-10-06 21:29:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46510 states, 46509 states have (on average 5.409060611924573) internal successors, (251570), 46509 states have internal predecessors, (251570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46510 states to 46510 states and 251570 transitions. [2021-10-06 21:29:30,881 INFO L78 Accepts]: Start accepts. Automaton has 46510 states and 251570 transitions. Word has length 30 [2021-10-06 21:29:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:30,881 INFO L470 AbstractCegarLoop]: Abstraction has 46510 states and 251570 transitions. [2021-10-06 21:29:30,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:29:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 46510 states and 251570 transitions. [2021-10-06 21:29:31,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:29:31,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:31,056 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, 1, 1, 1, 1] [2021-10-06 21:29:31,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:31,256 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 [2021-10-06 21:29:31,257 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)] === [2021-10-06 21:29:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2003835710, now seen corresponding path program 37 times [2021-10-06 21:29:31,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:31,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270037541] [2021-10-06 21:29:31,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:31,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:31,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:31,260 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) [2021-10-06 21:29:31,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:29:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:31,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:29:31,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:32,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:32,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:32,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270037541] [2021-10-06 21:29:32,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270037541] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:32,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:32,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:29:32,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482504224] [2021-10-06 21:29:32,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:29:32,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:29:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:29:32,285 INFO L87 Difference]: Start difference. First operand 46510 states and 251570 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:34,273 INFO L93 Difference]: Finished difference Result 66700 states and 355460 transitions. [2021-10-06 21:29:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:29:34,274 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:29:34,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:35,115 INFO L225 Difference]: With dead ends: 66700 [2021-10-06 21:29:35,115 INFO L226 Difference]: Without dead ends: 66498 [2021-10-06 21:29:35,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 766.6ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:29:35,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66498 states. [2021-10-06 21:29:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66498 to 48056. [2021-10-06 21:29:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48056 states, 48055 states have (on average 5.422536676724587) internal successors, (260580), 48055 states have internal predecessors, (260580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48056 states to 48056 states and 260580 transitions. [2021-10-06 21:29:38,311 INFO L78 Accepts]: Start accepts. Automaton has 48056 states and 260580 transitions. Word has length 30 [2021-10-06 21:29:38,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:38,312 INFO L470 AbstractCegarLoop]: Abstraction has 48056 states and 260580 transitions. [2021-10-06 21:29:38,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:38,312 INFO L276 IsEmpty]: Start isEmpty. Operand 48056 states and 260580 transitions. [2021-10-06 21:29:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:29:38,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:38,535 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, 1, 1, 1, 1] [2021-10-06 21:29:38,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:38,735 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 [2021-10-06 21:29:38,736 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)] === [2021-10-06 21:29:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:38,737 INFO L82 PathProgramCache]: Analyzing trace with hash -871443774, now seen corresponding path program 38 times [2021-10-06 21:29:38,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:38,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995090547] [2021-10-06 21:29:38,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:38,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:38,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:38,739 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) [2021-10-06 21:29:38,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:29:39,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:39,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:39,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:29:39,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:39,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:40,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:40,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995090547] [2021-10-06 21:29:40,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995090547] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:40,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:40,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:29:40,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177557966] [2021-10-06 21:29:40,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:29:40,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:40,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:29:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:29:40,039 INFO L87 Difference]: Start difference. First operand 48056 states and 260580 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:29:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:48,844 INFO L93 Difference]: Finished difference Result 159004 states and 822384 transitions. [2021-10-06 21:29:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:29:48,849 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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 30 [2021-10-06 21:29:48,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:50,208 INFO L225 Difference]: With dead ends: 159004 [2021-10-06 21:29:50,208 INFO L226 Difference]: Without dead ends: 158632 [2021-10-06 21:29:50,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 5080.4ms TimeCoverageRelationStatistics Valid=783, Invalid=2999, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:29:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158632 states. [2021-10-06 21:29:55,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158632 to 49822. [2021-10-06 21:29:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49822 states, 49821 states have (on average 5.4317255775676925) internal successors, (270614), 49821 states have internal predecessors, (270614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49822 states to 49822 states and 270614 transitions. [2021-10-06 21:29:56,665 INFO L78 Accepts]: Start accepts. Automaton has 49822 states and 270614 transitions. Word has length 30 [2021-10-06 21:29:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:56,665 INFO L470 AbstractCegarLoop]: Abstraction has 49822 states and 270614 transitions. [2021-10-06 21:29:56,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:29:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 49822 states and 270614 transitions. [2021-10-06 21:29:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:29:56,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:56,847 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, 1, 1, 1, 1] [2021-10-06 21:29:56,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:57,047 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 [2021-10-06 21:29:57,048 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)] === [2021-10-06 21:29:57,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1306541896, now seen corresponding path program 39 times [2021-10-06 21:29:57,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:57,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453392351] [2021-10-06 21:29:57,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:57,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:57,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:57,051 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) [2021-10-06 21:29:57,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:29:57,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:29:57,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:57,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:57,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:58,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:58,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:58,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453392351] [2021-10-06 21:29:58,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453392351] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:58,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:58,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:29:58,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392956786] [2021-10-06 21:29:58,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:29:58,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:58,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:29:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:29:58,814 INFO L87 Difference]: Start difference. First operand 49822 states and 270614 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:30:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:07,177 INFO L93 Difference]: Finished difference Result 97842 states and 510565 transitions. [2021-10-06 21:30:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:30:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 30 [2021-10-06 21:30:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:08,773 INFO L225 Difference]: With dead ends: 97842 [2021-10-06 21:30:08,773 INFO L226 Difference]: Without dead ends: 97842 [2021-10-06 21:30:08,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 6657.5ms TimeCoverageRelationStatistics Valid=843, Invalid=3317, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:30:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97842 states. [2021-10-06 21:30:12,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97842 to 51086. [2021-10-06 21:30:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51086 states, 51085 states have (on average 5.421023783889596) internal successors, (276933), 51085 states have internal predecessors, (276933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51086 states to 51086 states and 276933 transitions. [2021-10-06 21:30:13,047 INFO L78 Accepts]: Start accepts. Automaton has 51086 states and 276933 transitions. Word has length 30 [2021-10-06 21:30:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:13,047 INFO L470 AbstractCegarLoop]: Abstraction has 51086 states and 276933 transitions. [2021-10-06 21:30:13,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:30:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 51086 states and 276933 transitions. [2021-10-06 21:30:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:30:13,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:13,366 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, 1, 1, 1, 1] [2021-10-06 21:30:13,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2021-10-06 21:30:13,566 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 [2021-10-06 21:30:13,567 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)] === [2021-10-06 21:30:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:13,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1415280576, now seen corresponding path program 40 times [2021-10-06 21:30:13,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:13,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455211819] [2021-10-06 21:30:13,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:30:13,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:13,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:13,571 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) [2021-10-06 21:30:13,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:30:14,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:30:14,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:14,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:30:14,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:14,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:14,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:14,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455211819] [2021-10-06 21:30:14,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455211819] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:14,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:14,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:30:14,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025536875] [2021-10-06 21:30:14,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:30:14,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:14,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:30:14,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:30:14,653 INFO L87 Difference]: Start difference. First operand 51086 states and 276933 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:18,039 INFO L93 Difference]: Finished difference Result 74700 states and 375975 transitions. [2021-10-06 21:30:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:30:18,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:30:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:18,947 INFO L225 Difference]: With dead ends: 74700 [2021-10-06 21:30:18,947 INFO L226 Difference]: Without dead ends: 74700 [2021-10-06 21:30:18,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1885.7ms TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:30:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74700 states. [2021-10-06 21:30:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74700 to 51356. [2021-10-06 21:30:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51356 states, 51355 states have (on average 5.4280206406386915) internal successors, (278756), 51355 states have internal predecessors, (278756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51356 states to 51356 states and 278756 transitions. [2021-10-06 21:30:22,164 INFO L78 Accepts]: Start accepts. Automaton has 51356 states and 278756 transitions. Word has length 30 [2021-10-06 21:30:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:22,164 INFO L470 AbstractCegarLoop]: Abstraction has 51356 states and 278756 transitions. [2021-10-06 21:30:22,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 51356 states and 278756 transitions. [2021-10-06 21:30:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:30:22,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:22,384 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, 1, 1, 1, 1] [2021-10-06 21:30:22,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:22,590 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 [2021-10-06 21:30:22,590 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)] === [2021-10-06 21:30:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:22,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1333104656, now seen corresponding path program 41 times [2021-10-06 21:30:22,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:22,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014252180] [2021-10-06 21:30:22,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:30:22,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:22,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:22,593 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) [2021-10-06 21:30:22,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:30:23,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:30:23,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:23,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:30:23,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:23,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:23,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:23,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014252180] [2021-10-06 21:30:23,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014252180] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:23,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:23,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:30:23,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001926931] [2021-10-06 21:30:23,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:30:23,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:30:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:30:23,793 INFO L87 Difference]: Start difference. First operand 51356 states and 278756 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:28,794 INFO L93 Difference]: Finished difference Result 105912 states and 554752 transitions. [2021-10-06 21:30:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:30:28,796 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:30:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:29,621 INFO L225 Difference]: With dead ends: 105912 [2021-10-06 21:30:29,621 INFO L226 Difference]: Without dead ends: 105560 [2021-10-06 21:30:29,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 2735.7ms TimeCoverageRelationStatistics Valid=432, Invalid=1374, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:30:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105560 states. [2021-10-06 21:30:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105560 to 54544. [2021-10-06 21:30:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54544 states, 54543 states have (on average 5.4704911721027445) internal successors, (298377), 54543 states have internal predecessors, (298377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54544 states to 54544 states and 298377 transitions. [2021-10-06 21:30:34,196 INFO L78 Accepts]: Start accepts. Automaton has 54544 states and 298377 transitions. Word has length 30 [2021-10-06 21:30:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:34,196 INFO L470 AbstractCegarLoop]: Abstraction has 54544 states and 298377 transitions. [2021-10-06 21:30:34,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand 54544 states and 298377 transitions. [2021-10-06 21:30:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:30:34,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:34,456 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, 1, 1, 1, 1] [2021-10-06 21:30:34,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:34,656 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 [2021-10-06 21:30:34,657 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)] === [2021-10-06 21:30:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:34,658 INFO L82 PathProgramCache]: Analyzing trace with hash 86583156, now seen corresponding path program 42 times [2021-10-06 21:30:34,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:34,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910648037] [2021-10-06 21:30:34,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:34,659 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:34,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:34,660 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) [2021-10-06 21:30:34,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:30:35,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:30:35,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:35,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:30:35,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:35,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:36,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:36,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910648037] [2021-10-06 21:30:36,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910648037] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:36,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:36,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:30:36,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047461664] [2021-10-06 21:30:36,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:30:36,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:36,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:30:36,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:30:36,177 INFO L87 Difference]: Start difference. First operand 54544 states and 298377 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:30:40,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:40,414 INFO L93 Difference]: Finished difference Result 76832 states and 393012 transitions. [2021-10-06 21:30:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:30:40,414 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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 30 [2021-10-06 21:30:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:41,374 INFO L225 Difference]: With dead ends: 76832 [2021-10-06 21:30:41,374 INFO L226 Difference]: Without dead ends: 76324 [2021-10-06 21:30:41,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2904.5ms TimeCoverageRelationStatistics Valid=433, Invalid=1373, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:30:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76324 states. [2021-10-06 21:30:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76324 to 55290. [2021-10-06 21:30:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55290 states, 55289 states have (on average 5.467434751939807) internal successors, (302289), 55289 states have internal predecessors, (302289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55290 states to 55290 states and 302289 transitions. [2021-10-06 21:30:45,321 INFO L78 Accepts]: Start accepts. Automaton has 55290 states and 302289 transitions. Word has length 30 [2021-10-06 21:30:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:45,325 INFO L470 AbstractCegarLoop]: Abstraction has 55290 states and 302289 transitions. [2021-10-06 21:30:45,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:30:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 55290 states and 302289 transitions. [2021-10-06 21:30:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:30:45,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:45,645 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, 1, 1, 1, 1] [2021-10-06 21:30:45,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:45,858 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 [2021-10-06 21:30:45,859 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)] === [2021-10-06 21:30:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:45,860 INFO L82 PathProgramCache]: Analyzing trace with hash 204364078, now seen corresponding path program 43 times [2021-10-06 21:30:45,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:45,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345797740] [2021-10-06 21:30:45,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:45,861 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:45,862 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) [2021-10-06 21:30:45,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:30:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:46,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:30:46,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:46,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:47,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:47,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345797740] [2021-10-06 21:30:47,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345797740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:47,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:47,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:30:47,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669867257] [2021-10-06 21:30:47,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:30:47,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:30:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:30:47,114 INFO L87 Difference]: Start difference. First operand 55290 states and 302289 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:30:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:50,758 INFO L93 Difference]: Finished difference Result 70918 states and 371128 transitions. [2021-10-06 21:30:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:30:50,759 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 30 [2021-10-06 21:30:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:51,190 INFO L225 Difference]: With dead ends: 70918 [2021-10-06 21:30:51,190 INFO L226 Difference]: Without dead ends: 70720 [2021-10-06 21:30:51,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 2133.7ms TimeCoverageRelationStatistics Valid=458, Invalid=1522, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:30:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70720 states. [2021-10-06 21:30:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70720 to 57196. [2021-10-06 21:30:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57196 states, 57195 states have (on average 5.49791065652592) internal successors, (314453), 57195 states have internal predecessors, (314453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57196 states to 57196 states and 314453 transitions. [2021-10-06 21:30:54,927 INFO L78 Accepts]: Start accepts. Automaton has 57196 states and 314453 transitions. Word has length 30 [2021-10-06 21:30:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:54,927 INFO L470 AbstractCegarLoop]: Abstraction has 57196 states and 314453 transitions. [2021-10-06 21:30:54,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:30:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 57196 states and 314453 transitions. [2021-10-06 21:30:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:30:55,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:55,114 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, 1, 1, 1, 1] [2021-10-06 21:30:55,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:55,315 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 [2021-10-06 21:30:55,315 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)] === [2021-10-06 21:30:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 916843182, now seen corresponding path program 44 times [2021-10-06 21:30:55,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:55,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084709360] [2021-10-06 21:30:55,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:30:55,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:55,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:55,318 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) [2021-10-06 21:30:55,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:30:56,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:30:56,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:56,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:30:56,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:56,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:57,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:57,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084709360] [2021-10-06 21:30:57,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084709360] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:57,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:57,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:30:57,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144366867] [2021-10-06 21:30:57,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:30:57,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:57,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:30:57,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:30:57,122 INFO L87 Difference]: Start difference. First operand 57196 states and 314453 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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) [2021-10-06 21:30:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:59,392 INFO L93 Difference]: Finished difference Result 79100 states and 408047 transitions. [2021-10-06 21:30:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:30:59,393 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 30 [2021-10-06 21:30:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:59,977 INFO L225 Difference]: With dead ends: 79100 [2021-10-06 21:30:59,977 INFO L226 Difference]: Without dead ends: 79100 [2021-10-06 21:30:59,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 973.8ms TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:31:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79100 states. [2021-10-06 21:31:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79100 to 58402. [2021-10-06 21:31:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58402 states, 58401 states have (on average 5.5098542833170665) internal successors, (321781), 58401 states have internal predecessors, (321781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58402 states to 58402 states and 321781 transitions. [2021-10-06 21:31:03,737 INFO L78 Accepts]: Start accepts. Automaton has 58402 states and 321781 transitions. Word has length 30 [2021-10-06 21:31:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:03,737 INFO L470 AbstractCegarLoop]: Abstraction has 58402 states and 321781 transitions. [2021-10-06 21:31:03,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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) [2021-10-06 21:31:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 58402 states and 321781 transitions. [2021-10-06 21:31:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:31:04,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:04,003 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, 1, 1, 1, 1] [2021-10-06 21:31:04,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:04,203 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 [2021-10-06 21:31:04,204 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)] === [2021-10-06 21:31:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:04,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1906634636, now seen corresponding path program 45 times [2021-10-06 21:31:04,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:04,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464755143] [2021-10-06 21:31:04,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:31:04,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:04,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:04,207 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) [2021-10-06 21:31:04,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:31:05,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:31:05,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:05,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:31:05,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:05,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:06,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:06,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464755143] [2021-10-06 21:31:06,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464755143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:06,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:06,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:31:06,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890915321] [2021-10-06 21:31:06,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:31:06,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:31:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:31:06,269 INFO L87 Difference]: Start difference. First operand 58402 states and 321781 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:31:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:08,716 INFO L93 Difference]: Finished difference Result 64370 states and 348269 transitions. [2021-10-06 21:31:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:31:08,717 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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 30 [2021-10-06 21:31:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:09,169 INFO L225 Difference]: With dead ends: 64370 [2021-10-06 21:31:09,169 INFO L226 Difference]: Without dead ends: 64336 [2021-10-06 21:31:09,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1271.0ms TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:31:09,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64336 states. [2021-10-06 21:31:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64336 to 58574. [2021-10-06 21:31:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58574 states, 58573 states have (on average 5.496576921106994) internal successors, (321951), 58573 states have internal predecessors, (321951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58574 states to 58574 states and 321951 transitions. [2021-10-06 21:31:13,188 INFO L78 Accepts]: Start accepts. Automaton has 58574 states and 321951 transitions. Word has length 30 [2021-10-06 21:31:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:13,189 INFO L470 AbstractCegarLoop]: Abstraction has 58574 states and 321951 transitions. [2021-10-06 21:31:13,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:31:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 58574 states and 321951 transitions. [2021-10-06 21:31:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:31:13,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:13,690 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, 1, 1, 1, 1] [2021-10-06 21:31:13,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:13,905 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 [2021-10-06 21:31:13,905 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)] === [2021-10-06 21:31:13,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:13,906 INFO L82 PathProgramCache]: Analyzing trace with hash -845985424, now seen corresponding path program 46 times [2021-10-06 21:31:13,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:13,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472399787] [2021-10-06 21:31:13,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:13,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:13,911 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) [2021-10-06 21:31:13,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:31:14,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:14,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:14,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:31:14,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:14,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:15,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:15,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472399787] [2021-10-06 21:31:15,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472399787] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:15,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:15,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:31:15,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240142596] [2021-10-06 21:31:15,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:31:15,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:31:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:31:15,237 INFO L87 Difference]: Start difference. First operand 58574 states and 321951 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:18,769 INFO L93 Difference]: Finished difference Result 76888 states and 405326 transitions. [2021-10-06 21:31:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:31:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:31:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:19,802 INFO L225 Difference]: With dead ends: 76888 [2021-10-06 21:31:19,802 INFO L226 Difference]: Without dead ends: 76790 [2021-10-06 21:31:19,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 2019.5ms TimeCoverageRelationStatistics Valid=469, Invalid=1253, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:31:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76790 states. [2021-10-06 21:31:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76790 to 59514. [2021-10-06 21:31:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59514 states, 59513 states have (on average 5.5127451145127955) internal successors, (328080), 59513 states have internal predecessors, (328080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:23,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59514 states to 59514 states and 328080 transitions. [2021-10-06 21:31:23,158 INFO L78 Accepts]: Start accepts. Automaton has 59514 states and 328080 transitions. Word has length 30 [2021-10-06 21:31:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:23,158 INFO L470 AbstractCegarLoop]: Abstraction has 59514 states and 328080 transitions. [2021-10-06 21:31:23,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 59514 states and 328080 transitions. [2021-10-06 21:31:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:31:23,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:23,904 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, 1, 1, 1, 1] [2021-10-06 21:31:23,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2021-10-06 21:31:24,117 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 [2021-10-06 21:31:24,118 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)] === [2021-10-06 21:31:24,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:24,118 INFO L82 PathProgramCache]: Analyzing trace with hash 573702388, now seen corresponding path program 47 times [2021-10-06 21:31:24,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:24,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687161275] [2021-10-06 21:31:24,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:24,120 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:24,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:24,121 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) [2021-10-06 21:31:24,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:31:24,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:31:24,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:24,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:31:24,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:24,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:25,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:25,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687161275] [2021-10-06 21:31:25,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687161275] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:25,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:25,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:31:25,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242418362] [2021-10-06 21:31:25,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:31:25,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:25,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:31:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:31:25,407 INFO L87 Difference]: Start difference. First operand 59514 states and 328080 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:32,023 INFO L93 Difference]: Finished difference Result 128832 states and 658790 transitions. [2021-10-06 21:31:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:31:32,024 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:31:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:33,084 INFO L225 Difference]: With dead ends: 128832 [2021-10-06 21:31:33,084 INFO L226 Difference]: Without dead ends: 128832 [2021-10-06 21:31:33,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 3427.4ms TimeCoverageRelationStatistics Valid=669, Invalid=2193, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:31:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128832 states. [2021-10-06 21:31:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128832 to 60486. [2021-10-06 21:31:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60486 states, 60485 states have (on average 5.509084897081921) internal successors, (333217), 60485 states have internal predecessors, (333217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60486 states to 60486 states and 333217 transitions. [2021-10-06 21:31:38,919 INFO L78 Accepts]: Start accepts. Automaton has 60486 states and 333217 transitions. Word has length 30 [2021-10-06 21:31:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:38,919 INFO L470 AbstractCegarLoop]: Abstraction has 60486 states and 333217 transitions. [2021-10-06 21:31:38,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 60486 states and 333217 transitions. [2021-10-06 21:31:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:31:39,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:39,180 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, 1, 1, 1, 1] [2021-10-06 21:31:39,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:39,386 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 [2021-10-06 21:31:39,387 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)] === [2021-10-06 21:31:39,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:39,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1618071174, now seen corresponding path program 48 times [2021-10-06 21:31:39,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:39,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785956234] [2021-10-06 21:31:39,389 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:39,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:39,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:39,391 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) [2021-10-06 21:31:39,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:31:40,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:31:40,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:40,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:31:40,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:40,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:40,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:40,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:40,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785956234] [2021-10-06 21:31:40,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785956234] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:40,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:40,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:31:40,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567122748] [2021-10-06 21:31:40,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:31:40,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:40,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:31:40,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:31:40,705 INFO L87 Difference]: Start difference. First operand 60486 states and 333217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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) [2021-10-06 21:31:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:43,910 INFO L93 Difference]: Finished difference Result 86186 states and 447661 transitions. [2021-10-06 21:31:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:31:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 30 [2021-10-06 21:31:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:44,592 INFO L225 Difference]: With dead ends: 86186 [2021-10-06 21:31:44,592 INFO L226 Difference]: Without dead ends: 86174 [2021-10-06 21:31:44,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1005.1ms TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:31:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86174 states. [2021-10-06 21:31:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86174 to 62096. [2021-10-06 21:31:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62096 states, 62095 states have (on average 5.505998872695064) internal successors, (341895), 62095 states have internal predecessors, (341895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62096 states to 62096 states and 341895 transitions. [2021-10-06 21:31:48,817 INFO L78 Accepts]: Start accepts. Automaton has 62096 states and 341895 transitions. Word has length 30 [2021-10-06 21:31:48,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:48,817 INFO L470 AbstractCegarLoop]: Abstraction has 62096 states and 341895 transitions. [2021-10-06 21:31:48,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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) [2021-10-06 21:31:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 62096 states and 341895 transitions. [2021-10-06 21:31:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:31:49,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:49,025 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, 1, 1, 1, 1] [2021-10-06 21:31:49,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:49,225 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 [2021-10-06 21:31:49,226 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)] === [2021-10-06 21:31:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:49,226 INFO L82 PathProgramCache]: Analyzing trace with hash 940605654, now seen corresponding path program 49 times [2021-10-06 21:31:49,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:49,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237335909] [2021-10-06 21:31:49,227 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:31:49,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:49,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:49,229 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) [2021-10-06 21:31:49,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:31:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:31:50,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:31:50,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:50,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:51,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:51,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237335909] [2021-10-06 21:31:51,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237335909] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:51,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:51,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:31:51,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389680653] [2021-10-06 21:31:51,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:31:51,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:51,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:31:51,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:31:51,244 INFO L87 Difference]: Start difference. First operand 62096 states and 341895 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:31:57,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:57,577 INFO L93 Difference]: Finished difference Result 87610 states and 450933 transitions. [2021-10-06 21:31:57,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:31:57,578 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 30 [2021-10-06 21:31:57,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:58,542 INFO L225 Difference]: With dead ends: 87610 [2021-10-06 21:31:58,542 INFO L226 Difference]: Without dead ends: 87610 [2021-10-06 21:31:58,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 4226.6ms TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:31:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87610 states. [2021-10-06 21:32:01,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87610 to 64518. [2021-10-06 21:32:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64518 states, 64517 states have (on average 5.512531580823659) internal successors, (355652), 64517 states have internal predecessors, (355652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64518 states to 64518 states and 355652 transitions. [2021-10-06 21:32:02,579 INFO L78 Accepts]: Start accepts. Automaton has 64518 states and 355652 transitions. Word has length 30 [2021-10-06 21:32:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:02,579 INFO L470 AbstractCegarLoop]: Abstraction has 64518 states and 355652 transitions. [2021-10-06 21:32:02,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:32:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 64518 states and 355652 transitions. [2021-10-06 21:32:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:32:02,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:02,882 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, 1, 1, 1, 1] [2021-10-06 21:32:02,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:03,082 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 [2021-10-06 21:32:03,082 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)] === [2021-10-06 21:32:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash -556662136, now seen corresponding path program 50 times [2021-10-06 21:32:03,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:03,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061753175] [2021-10-06 21:32:03,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:32:03,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:03,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:03,085 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) [2021-10-06 21:32:03,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:32:03,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:32:03,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:03,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:32:03,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:04,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:04,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:04,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061753175] [2021-10-06 21:32:04,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061753175] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:04,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:04,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:32:04,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682794299] [2021-10-06 21:32:04,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:32:04,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:32:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:32:04,562 INFO L87 Difference]: Start difference. First operand 64518 states and 355652 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:32:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:08,182 INFO L93 Difference]: Finished difference Result 75220 states and 398273 transitions. [2021-10-06 21:32:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:32:08,183 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 30 [2021-10-06 21:32:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:09,191 INFO L225 Difference]: With dead ends: 75220 [2021-10-06 21:32:09,192 INFO L226 Difference]: Without dead ends: 75032 [2021-10-06 21:32:09,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1927.1ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:32:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75032 states. [2021-10-06 21:32:12,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75032 to 66116. [2021-10-06 21:32:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66116 states, 66115 states have (on average 5.496014520154277) internal successors, (363369), 66115 states have internal predecessors, (363369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66116 states to 66116 states and 363369 transitions. [2021-10-06 21:32:13,272 INFO L78 Accepts]: Start accepts. Automaton has 66116 states and 363369 transitions. Word has length 30 [2021-10-06 21:32:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:13,272 INFO L470 AbstractCegarLoop]: Abstraction has 66116 states and 363369 transitions. [2021-10-06 21:32:13,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:32:13,272 INFO L276 IsEmpty]: Start isEmpty. Operand 66116 states and 363369 transitions. [2021-10-06 21:32:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:32:13,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:13,997 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, 1, 1, 1, 1] [2021-10-06 21:32:14,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:14,215 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 [2021-10-06 21:32:14,215 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)] === [2021-10-06 21:32:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash 336865230, now seen corresponding path program 51 times [2021-10-06 21:32:14,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:14,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818545462] [2021-10-06 21:32:14,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:32:14,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:14,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:14,223 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) [2021-10-06 21:32:14,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:32:15,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:32:15,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:15,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:32:15,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:15,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:16,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:16,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818545462] [2021-10-06 21:32:16,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818545462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:16,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:16,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:32:16,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148912587] [2021-10-06 21:32:16,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:32:16,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:32:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:32:16,130 INFO L87 Difference]: Start difference. First operand 66116 states and 363369 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:32:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:24,528 INFO L93 Difference]: Finished difference Result 97988 states and 502263 transitions. [2021-10-06 21:32:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:32:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 30 [2021-10-06 21:32:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:25,735 INFO L225 Difference]: With dead ends: 97988 [2021-10-06 21:32:25,735 INFO L226 Difference]: Without dead ends: 97932 [2021-10-06 21:32:25,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 5771.0ms TimeCoverageRelationStatistics Valid=459, Invalid=1433, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:32:25,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97932 states. [2021-10-06 21:32:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97932 to 68770. [2021-10-06 21:32:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68770 states, 68769 states have (on average 5.519623667640943) internal successors, (379579), 68769 states have internal predecessors, (379579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68770 states to 68770 states and 379579 transitions. [2021-10-06 21:32:30,979 INFO L78 Accepts]: Start accepts. Automaton has 68770 states and 379579 transitions. Word has length 30 [2021-10-06 21:32:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:30,980 INFO L470 AbstractCegarLoop]: Abstraction has 68770 states and 379579 transitions. [2021-10-06 21:32:30,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:32:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 68770 states and 379579 transitions. [2021-10-06 21:32:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:32:31,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:31,305 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, 1, 1, 1, 1] [2021-10-06 21:32:31,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:31,513 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 [2021-10-06 21:32:31,514 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)] === [2021-10-06 21:32:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:31,515 INFO L82 PathProgramCache]: Analyzing trace with hash -819812388, now seen corresponding path program 52 times [2021-10-06 21:32:31,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:31,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680801529] [2021-10-06 21:32:31,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:32:31,516 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:31,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:31,517 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) [2021-10-06 21:32:31,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:32:32,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:32:32,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:32,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:32:32,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:32,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:32,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:32,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680801529] [2021-10-06 21:32:32,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680801529] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:32,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:32,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:32:32,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666179765] [2021-10-06 21:32:32,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:32:32,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:32,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:32:32,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:32:32,852 INFO L87 Difference]: Start difference. First operand 68770 states and 379579 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:32:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:37,135 INFO L93 Difference]: Finished difference Result 82734 states and 438010 transitions. [2021-10-06 21:32:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:32:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 30 [2021-10-06 21:32:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:38,257 INFO L225 Difference]: With dead ends: 82734 [2021-10-06 21:32:38,257 INFO L226 Difference]: Without dead ends: 82530 [2021-10-06 21:32:38,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2265.2ms TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:32:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82530 states. [2021-10-06 21:32:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82530 to 69606. [2021-10-06 21:32:42,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69606 states, 69605 states have (on average 5.534904101716831) internal successors, (385257), 69605 states have internal predecessors, (385257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69606 states to 69606 states and 385257 transitions. [2021-10-06 21:32:42,705 INFO L78 Accepts]: Start accepts. Automaton has 69606 states and 385257 transitions. Word has length 30 [2021-10-06 21:32:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:42,705 INFO L470 AbstractCegarLoop]: Abstraction has 69606 states and 385257 transitions. [2021-10-06 21:32:42,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:32:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 69606 states and 385257 transitions. [2021-10-06 21:32:43,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:32:43,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:43,588 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, 1, 1, 1, 1] [2021-10-06 21:32:43,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:43,802 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 [2021-10-06 21:32:43,802 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)] === [2021-10-06 21:32:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash -279353086, now seen corresponding path program 53 times [2021-10-06 21:32:43,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:43,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937979369] [2021-10-06 21:32:43,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:32:43,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:43,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:43,806 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) [2021-10-06 21:32:43,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:32:44,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:32:44,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:32:44,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:44,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:45,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:45,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937979369] [2021-10-06 21:32:45,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937979369] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:45,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:45,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:32:45,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357149813] [2021-10-06 21:32:45,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:32:45,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:32:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:32:45,113 INFO L87 Difference]: Start difference. First operand 69606 states and 385257 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:48,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:48,992 INFO L93 Difference]: Finished difference Result 98652 states and 511909 transitions. [2021-10-06 21:32:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:32:48,993 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:32:48,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:50,282 INFO L225 Difference]: With dead ends: 98652 [2021-10-06 21:32:50,282 INFO L226 Difference]: Without dead ends: 98356 [2021-10-06 21:32:50,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1775.6ms TimeCoverageRelationStatistics Valid=370, Invalid=1036, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:32:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98356 states. [2021-10-06 21:32:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98356 to 70990. [2021-10-06 21:32:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70990 states, 70989 states have (on average 5.529194663962023) internal successors, (392512), 70989 states have internal predecessors, (392512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70990 states to 70990 states and 392512 transitions. [2021-10-06 21:32:55,519 INFO L78 Accepts]: Start accepts. Automaton has 70990 states and 392512 transitions. Word has length 30 [2021-10-06 21:32:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:55,519 INFO L470 AbstractCegarLoop]: Abstraction has 70990 states and 392512 transitions. [2021-10-06 21:32:55,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 70990 states and 392512 transitions. [2021-10-06 21:32:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:32:55,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:55,876 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, 1, 1, 1, 1] [2021-10-06 21:32:55,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:56,077 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 [2021-10-06 21:32:56,077 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)] === [2021-10-06 21:32:56,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:56,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1823840648, now seen corresponding path program 54 times [2021-10-06 21:32:56,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:56,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304220923] [2021-10-06 21:32:56,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:32:56,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:56,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:56,081 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) [2021-10-06 21:32:56,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:32:56,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:32:56,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:57,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:32:57,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:57,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:57,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:57,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304220923] [2021-10-06 21:32:57,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304220923] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:57,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:57,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:32:57,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304264731] [2021-10-06 21:32:57,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:32:57,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:32:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:32:57,469 INFO L87 Difference]: Start difference. First operand 70990 states and 392512 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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) [2021-10-06 21:33:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:00,179 INFO L93 Difference]: Finished difference Result 89302 states and 471752 transitions. [2021-10-06 21:33:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:33:00,185 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 30 [2021-10-06 21:33:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:01,398 INFO L225 Difference]: With dead ends: 89302 [2021-10-06 21:33:01,398 INFO L226 Difference]: Without dead ends: 89302 [2021-10-06 21:33:01,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1022.2ms TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:33:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89302 states. [2021-10-06 21:33:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89302 to 71746. [2021-10-06 21:33:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71746 states, 71745 states have (on average 5.537486932887309) internal successors, (397287), 71745 states have internal predecessors, (397287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71746 states to 71746 states and 397287 transitions. [2021-10-06 21:33:05,947 INFO L78 Accepts]: Start accepts. Automaton has 71746 states and 397287 transitions. Word has length 30 [2021-10-06 21:33:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:05,948 INFO L470 AbstractCegarLoop]: Abstraction has 71746 states and 397287 transitions. [2021-10-06 21:33:05,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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) [2021-10-06 21:33:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 71746 states and 397287 transitions. [2021-10-06 21:33:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:33:06,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:06,907 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, 1, 1, 1, 1] [2021-10-06 21:33:06,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-06 21:33:07,121 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 [2021-10-06 21:33:07,122 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)] === [2021-10-06 21:33:07,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:07,123 INFO L82 PathProgramCache]: Analyzing trace with hash -936068478, now seen corresponding path program 55 times [2021-10-06 21:33:07,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:07,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715498009] [2021-10-06 21:33:07,124 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:33:07,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:07,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:07,125 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) [2021-10-06 21:33:07,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:33:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:33:07,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:33:07,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:08,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:08,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:08,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715498009] [2021-10-06 21:33:08,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715498009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:08,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:08,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:33:08,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134269915] [2021-10-06 21:33:08,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:33:08,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:33:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:33:08,710 INFO L87 Difference]: Start difference. First operand 71746 states and 397287 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:33:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:17,804 INFO L93 Difference]: Finished difference Result 108526 states and 552696 transitions. [2021-10-06 21:33:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:33:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 30 [2021-10-06 21:33:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:18,661 INFO L225 Difference]: With dead ends: 108526 [2021-10-06 21:33:18,662 INFO L226 Difference]: Without dead ends: 108442 [2021-10-06 21:33:18,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 5568.7ms TimeCoverageRelationStatistics Valid=499, Invalid=1663, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:33:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108442 states. [2021-10-06 21:33:23,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108442 to 73436. [2021-10-06 21:33:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73436 states, 73435 states have (on average 5.556151698781235) internal successors, (408016), 73435 states have internal predecessors, (408016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73436 states to 73436 states and 408016 transitions. [2021-10-06 21:33:23,925 INFO L78 Accepts]: Start accepts. Automaton has 73436 states and 408016 transitions. Word has length 30 [2021-10-06 21:33:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:23,925 INFO L470 AbstractCegarLoop]: Abstraction has 73436 states and 408016 transitions. [2021-10-06 21:33:23,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) [2021-10-06 21:33:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 73436 states and 408016 transitions. [2021-10-06 21:33:25,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:33:25,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:25,142 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, 1, 1, 1, 1] [2021-10-06 21:33:25,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:25,358 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 [2021-10-06 21:33:25,358 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)] === [2021-10-06 21:33:25,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:25,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1552286794, now seen corresponding path program 56 times [2021-10-06 21:33:25,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:25,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959395077] [2021-10-06 21:33:25,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:33:25,360 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:25,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:25,362 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) [2021-10-06 21:33:25,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:33:26,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:33:26,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:26,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:33:26,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:26,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:27,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:27,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959395077] [2021-10-06 21:33:27,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959395077] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:27,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:27,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:33:27,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883652115] [2021-10-06 21:33:27,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:33:27,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:33:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:33:27,289 INFO L87 Difference]: Start difference. First operand 73436 states and 408016 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:33:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:35,086 INFO L93 Difference]: Finished difference Result 111760 states and 576970 transitions. [2021-10-06 21:33:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:33:35,088 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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 30 [2021-10-06 21:33:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:36,058 INFO L225 Difference]: With dead ends: 111760 [2021-10-06 21:33:36,059 INFO L226 Difference]: Without dead ends: 111432 [2021-10-06 21:33:36,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 4930.1ms TimeCoverageRelationStatistics Valid=426, Invalid=1380, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:33:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111432 states. [2021-10-06 21:33:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111432 to 77936. [2021-10-06 21:33:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77936 states, 77935 states have (on average 5.569628536601014) internal successors, (434069), 77935 states have internal predecessors, (434069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77936 states to 77936 states and 434069 transitions. [2021-10-06 21:33:41,641 INFO L78 Accepts]: Start accepts. Automaton has 77936 states and 434069 transitions. Word has length 30 [2021-10-06 21:33:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:41,641 INFO L470 AbstractCegarLoop]: Abstraction has 77936 states and 434069 transitions. [2021-10-06 21:33:41,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:33:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 77936 states and 434069 transitions. [2021-10-06 21:33:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:33:42,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:42,630 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, 1, 1, 1, 1] [2021-10-06 21:33:42,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:42,844 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 [2021-10-06 21:33:42,845 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)] === [2021-10-06 21:33:42,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:42,846 INFO L82 PathProgramCache]: Analyzing trace with hash -161572164, now seen corresponding path program 57 times [2021-10-06 21:33:42,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:42,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224139881] [2021-10-06 21:33:42,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:33:42,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:42,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:42,848 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) [2021-10-06 21:33:42,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:33:43,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:33:43,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:43,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:33:43,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:44,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:44,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:44,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224139881] [2021-10-06 21:33:44,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224139881] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:44,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:44,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:33:44,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447464418] [2021-10-06 21:33:44,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:33:44,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:33:44,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:33:44,560 INFO L87 Difference]: Start difference. First operand 77936 states and 434069 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:33:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:48,971 INFO L93 Difference]: Finished difference Result 91574 states and 494788 transitions. [2021-10-06 21:33:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:33:48,974 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 30 [2021-10-06 21:33:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:49,749 INFO L225 Difference]: With dead ends: 91574 [2021-10-06 21:33:49,749 INFO L226 Difference]: Without dead ends: 91420 [2021-10-06 21:33:49,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2233.1ms TimeCoverageRelationStatistics Valid=356, Invalid=1050, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:33:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91420 states. [2021-10-06 21:33:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91420 to 79544. [2021-10-06 21:33:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79544 states, 79543 states have (on average 5.5829174157374) internal successors, (444082), 79543 states have internal predecessors, (444082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79544 states to 79544 states and 444082 transitions. [2021-10-06 21:33:55,091 INFO L78 Accepts]: Start accepts. Automaton has 79544 states and 444082 transitions. Word has length 30 [2021-10-06 21:33:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:55,092 INFO L470 AbstractCegarLoop]: Abstraction has 79544 states and 444082 transitions. [2021-10-06 21:33:55,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:33:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 79544 states and 444082 transitions. [2021-10-06 21:33:55,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:33:55,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:55,444 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, 1, 1, 1, 1] [2021-10-06 21:33:55,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:55,644 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 [2021-10-06 21:33:55,645 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)] === [2021-10-06 21:33:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:55,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2022396418, now seen corresponding path program 58 times [2021-10-06 21:33:55,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:55,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630203761] [2021-10-06 21:33:55,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:33:55,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:55,648 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) [2021-10-06 21:33:55,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-06 21:33:56,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:33:56,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:56,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:33:56,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:56,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:57,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:57,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630203761] [2021-10-06 21:33:57,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630203761] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:57,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:57,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:33:57,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105499109] [2021-10-06 21:33:57,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:33:57,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:57,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:33:57,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:33:57,014 INFO L87 Difference]: Start difference. First operand 79544 states and 444082 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:01,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:01,912 INFO L93 Difference]: Finished difference Result 90326 states and 487391 transitions. [2021-10-06 21:34:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:34:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:34:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:02,614 INFO L225 Difference]: With dead ends: 90326 [2021-10-06 21:34:02,615 INFO L226 Difference]: Without dead ends: 90072 [2021-10-06 21:34:02,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2541.2ms TimeCoverageRelationStatistics Valid=441, Invalid=1281, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:34:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90072 states. [2021-10-06 21:34:06,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90072 to 80000. [2021-10-06 21:34:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80000 states, 79999 states have (on average 5.581857273215915) internal successors, (446543), 79999 states have internal predecessors, (446543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80000 states to 80000 states and 446543 transitions. [2021-10-06 21:34:07,623 INFO L78 Accepts]: Start accepts. Automaton has 80000 states and 446543 transitions. Word has length 30 [2021-10-06 21:34:07,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:07,623 INFO L470 AbstractCegarLoop]: Abstraction has 80000 states and 446543 transitions. [2021-10-06 21:34:07,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 80000 states and 446543 transitions. [2021-10-06 21:34:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:34:08,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:08,533 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, 1, 1, 1, 1] [2021-10-06 21:34:08,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2021-10-06 21:34:08,748 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 [2021-10-06 21:34:08,749 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)] === [2021-10-06 21:34:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:08,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1211921666, now seen corresponding path program 59 times [2021-10-06 21:34:08,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:08,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833677944] [2021-10-06 21:34:08,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:34:08,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:08,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:08,751 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) [2021-10-06 21:34:08,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-06 21:34:09,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:34:09,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:09,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:34:09,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:09,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:10,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:10,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833677944] [2021-10-06 21:34:10,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833677944] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:10,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:10,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:34:10,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584866788] [2021-10-06 21:34:10,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:34:10,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:10,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:34:10,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:34:10,153 INFO L87 Difference]: Start difference. First operand 80000 states and 446543 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:14,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:14,394 INFO L93 Difference]: Finished difference Result 95896 states and 515471 transitions. [2021-10-06 21:34:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:34:14,395 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:34:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:15,680 INFO L225 Difference]: With dead ends: 95896 [2021-10-06 21:34:15,680 INFO L226 Difference]: Without dead ends: 95794 [2021-10-06 21:34:15,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2231.2ms TimeCoverageRelationStatistics Valid=429, Invalid=1211, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:34:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95794 states. [2021-10-06 21:34:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95794 to 80806. [2021-10-06 21:34:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80806 states, 80805 states have (on average 5.590557515005259) internal successors, (451745), 80805 states have internal predecessors, (451745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80806 states to 80806 states and 451745 transitions. [2021-10-06 21:34:21,022 INFO L78 Accepts]: Start accepts. Automaton has 80806 states and 451745 transitions. Word has length 30 [2021-10-06 21:34:21,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:21,023 INFO L470 AbstractCegarLoop]: Abstraction has 80806 states and 451745 transitions. [2021-10-06 21:34:21,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:21,023 INFO L276 IsEmpty]: Start isEmpty. Operand 80806 states and 451745 transitions. [2021-10-06 21:34:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:34:21,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:21,342 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, 1, 1, 1, 1] [2021-10-06 21:34:21,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2021-10-06 21:34:21,542 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 [2021-10-06 21:34:21,542 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:34:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash 207766146, now seen corresponding path program 60 times [2021-10-06 21:34:21,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:21,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466493786] [2021-10-06 21:34:21,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:34:21,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:21,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:21,546 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:21,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-06 21:34:23,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:34:23,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:23,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:34:23,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:23,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:23,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:23,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466493786] [2021-10-06 21:34:23,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466493786] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:23,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:23,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:34:23,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412859974] [2021-10-06 21:34:23,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:34:23,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:34:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:34:23,873 INFO L87 Difference]: Start difference. First operand 80806 states and 451745 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:34:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:32,590 INFO L93 Difference]: Finished difference Result 141288 states and 728298 transitions. [2021-10-06 21:34:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:34:32,591 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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 30 [2021-10-06 21:34:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:34,695 INFO L225 Difference]: With dead ends: 141288 [2021-10-06 21:34:34,695 INFO L226 Difference]: Without dead ends: 141282 [2021-10-06 21:34:34,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 4356.8ms TimeCoverageRelationStatistics Valid=271, Invalid=919, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:34:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141282 states. [2021-10-06 21:34:42,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141282 to 88950. [2021-10-06 21:34:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88950 states, 88949 states have (on average 5.637162868610102) internal successors, (501420), 88949 states have internal predecessors, (501420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88950 states to 88950 states and 501420 transitions. [2021-10-06 21:34:43,569 INFO L78 Accepts]: Start accepts. Automaton has 88950 states and 501420 transitions. Word has length 30 [2021-10-06 21:34:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:43,569 INFO L470 AbstractCegarLoop]: Abstraction has 88950 states and 501420 transitions. [2021-10-06 21:34:43,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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) [2021-10-06 21:34:43,569 INFO L276 IsEmpty]: Start isEmpty. Operand 88950 states and 501420 transitions. [2021-10-06 21:34:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:34:43,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:43,928 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, 1, 1, 1, 1] [2021-10-06 21:34:43,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:44,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:34:44,129 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:34:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash -437425352, now seen corresponding path program 61 times [2021-10-06 21:34:44,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:44,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423235125] [2021-10-06 21:34:44,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:34:44,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:44,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:44,132 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:44,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-06 21:34:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:45,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:34:45,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:45,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:46,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:46,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423235125] [2021-10-06 21:34:46,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423235125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:46,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:46,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:34:46,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553649635] [2021-10-06 21:34:46,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:34:46,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:34:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:34:46,182 INFO L87 Difference]: Start difference. First operand 88950 states and 501420 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2021-10-06 21:34:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:51,454 INFO L93 Difference]: Finished difference Result 105694 states and 572489 transitions. [2021-10-06 21:34:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:34:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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 30 [2021-10-06 21:34:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:52,906 INFO L225 Difference]: With dead ends: 105694 [2021-10-06 21:34:52,906 INFO L226 Difference]: Without dead ends: 105694 [2021-10-06 21:34:52,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 3291.5ms TimeCoverageRelationStatistics Valid=470, Invalid=1882, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:34:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105694 states. [2021-10-06 21:34:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105694 to 91306. [2021-10-06 21:34:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91306 states, 91305 states have (on average 5.638475439461146) internal successors, (514821), 91305 states have internal predecessors, (514821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91306 states to 91306 states and 514821 transitions. [2021-10-06 21:34:59,115 INFO L78 Accepts]: Start accepts. Automaton has 91306 states and 514821 transitions. Word has length 30 [2021-10-06 21:34:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:59,116 INFO L470 AbstractCegarLoop]: Abstraction has 91306 states and 514821 transitions. [2021-10-06 21:34:59,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2021-10-06 21:34:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 91306 states and 514821 transitions. [2021-10-06 21:34:59,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:34:59,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:59,531 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, 1, 1, 1, 1] [2021-10-06 21:34:59,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:59,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:34:59,732 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:34:59,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:59,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1742307762, now seen corresponding path program 62 times [2021-10-06 21:34:59,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:59,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121218627] [2021-10-06 21:34:59,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:34:59,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:59,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:59,735 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:59,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-06 21:35:00,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:35:00,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:00,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:35:00,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:00,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:01,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:01,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121218627] [2021-10-06 21:35:01,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121218627] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:01,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:01,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:35:01,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534769764] [2021-10-06 21:35:01,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:35:01,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:35:01,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:35:01,166 INFO L87 Difference]: Start difference. First operand 91306 states and 514821 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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) [2021-10-06 21:35:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:08,050 INFO L93 Difference]: Finished difference Result 128600 states and 677049 transitions. [2021-10-06 21:35:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:35:08,051 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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 30 [2021-10-06 21:35:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:09,743 INFO L225 Difference]: With dead ends: 128600 [2021-10-06 21:35:09,743 INFO L226 Difference]: Without dead ends: 128600 [2021-10-06 21:35:09,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 3434.3ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:35:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128600 states. [2021-10-06 21:35:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128600 to 94434. [2021-10-06 21:35:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94434 states, 94433 states have (on average 5.638219690150689) internal successors, (532434), 94433 states have internal predecessors, (532434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94434 states to 94434 states and 532434 transitions. [2021-10-06 21:35:16,413 INFO L78 Accepts]: Start accepts. Automaton has 94434 states and 532434 transitions. Word has length 30 [2021-10-06 21:35:16,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:16,413 INFO L470 AbstractCegarLoop]: Abstraction has 94434 states and 532434 transitions. [2021-10-06 21:35:16,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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) [2021-10-06 21:35:16,413 INFO L276 IsEmpty]: Start isEmpty. Operand 94434 states and 532434 transitions. [2021-10-06 21:35:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:35:17,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:17,506 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, 1, 1, 1, 1] [2021-10-06 21:35:17,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:17,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:17,707 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:35:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:17,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1395981916, now seen corresponding path program 63 times [2021-10-06 21:35:17,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:17,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851997352] [2021-10-06 21:35:17,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:35:17,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:17,710 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:17,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-06 21:35:18,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:35:18,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:18,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:35:18,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:18,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:19,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:19,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851997352] [2021-10-06 21:35:19,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851997352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:19,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:19,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:35:19,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323364425] [2021-10-06 21:35:19,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:35:19,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:35:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:35:19,476 INFO L87 Difference]: Start difference. First operand 94434 states and 532434 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 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) [2021-10-06 21:35:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:24,353 INFO L93 Difference]: Finished difference Result 107196 states and 586282 transitions. [2021-10-06 21:35:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:35:24,354 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 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 30 [2021-10-06 21:35:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:25,256 INFO L225 Difference]: With dead ends: 107196 [2021-10-06 21:35:25,256 INFO L226 Difference]: Without dead ends: 106832 [2021-10-06 21:35:25,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2040.2ms TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:35:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106832 states. [2021-10-06 21:35:29,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106832 to 95690. [2021-10-06 21:35:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95690 states, 95689 states have (on average 5.640209428460952) internal successors, (539706), 95689 states have internal predecessors, (539706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95690 states to 95690 states and 539706 transitions. [2021-10-06 21:35:31,992 INFO L78 Accepts]: Start accepts. Automaton has 95690 states and 539706 transitions. Word has length 30 [2021-10-06 21:35:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:31,993 INFO L470 AbstractCegarLoop]: Abstraction has 95690 states and 539706 transitions. [2021-10-06 21:35:31,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 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) [2021-10-06 21:35:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 95690 states and 539706 transitions. [2021-10-06 21:35:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:35:32,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:32,984 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, 1, 1, 1, 1] [2021-10-06 21:35:33,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2021-10-06 21:35:33,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:33,185 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:35:33,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:33,185 INFO L82 PathProgramCache]: Analyzing trace with hash 516753406, now seen corresponding path program 64 times [2021-10-06 21:35:33,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:33,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581655367] [2021-10-06 21:35:33,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:35:33,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:33,192 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:33,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-06 21:35:34,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:35:34,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:34,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:35:34,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:34,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:35,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:35,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581655367] [2021-10-06 21:35:35,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581655367] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:35,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:35,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:35:35,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721225453] [2021-10-06 21:35:35,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:35:35,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:35:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:35:35,067 INFO L87 Difference]: Start difference. First operand 95690 states and 539706 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:40,057 INFO L93 Difference]: Finished difference Result 117620 states and 642506 transitions. [2021-10-06 21:35:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:35:40,059 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:35:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:41,078 INFO L225 Difference]: With dead ends: 117620 [2021-10-06 21:35:41,078 INFO L226 Difference]: Without dead ends: 117508 [2021-10-06 21:35:41,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2625.4ms TimeCoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:35:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117508 states. [2021-10-06 21:35:46,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117508 to 97934. [2021-10-06 21:35:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97934 states, 97933 states have (on average 5.6494337965752095) internal successors, (553266), 97933 states have internal predecessors, (553266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97934 states to 97934 states and 553266 transitions. [2021-10-06 21:35:47,803 INFO L78 Accepts]: Start accepts. Automaton has 97934 states and 553266 transitions. Word has length 30 [2021-10-06 21:35:47,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:47,803 INFO L470 AbstractCegarLoop]: Abstraction has 97934 states and 553266 transitions. [2021-10-06 21:35:47,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:47,803 INFO L276 IsEmpty]: Start isEmpty. Operand 97934 states and 553266 transitions. [2021-10-06 21:35:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:35:48,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:48,905 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, 1, 1, 1, 1] [2021-10-06 21:35:48,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:49,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:49,121 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:35:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:49,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1936441218, now seen corresponding path program 65 times [2021-10-06 21:35:49,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:49,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702391996] [2021-10-06 21:35:49,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:35:49,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:49,124 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:49,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-06 21:35:50,074 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:35:50,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:50,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:35:50,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:50,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:50,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:50,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702391996] [2021-10-06 21:35:50,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702391996] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:50,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:50,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:35:50,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253162937] [2021-10-06 21:35:50,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:35:50,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:35:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:35:50,651 INFO L87 Difference]: Start difference. First operand 97934 states and 553266 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:55,915 INFO L93 Difference]: Finished difference Result 132176 states and 702576 transitions. [2021-10-06 21:35:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:35:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-10-06 21:35:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:57,543 INFO L225 Difference]: With dead ends: 132176 [2021-10-06 21:35:57,544 INFO L226 Difference]: Without dead ends: 132176 [2021-10-06 21:35:57,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2271.6ms TimeCoverageRelationStatistics Valid=376, Invalid=1106, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:35:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132176 states. [2021-10-06 21:36:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132176 to 98564. [2021-10-06 21:36:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98564 states, 98563 states have (on average 5.642908596532167) internal successors, (556182), 98563 states have internal predecessors, (556182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98564 states to 98564 states and 556182 transitions. [2021-10-06 21:36:04,378 INFO L78 Accepts]: Start accepts. Automaton has 98564 states and 556182 transitions. Word has length 30 [2021-10-06 21:36:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:04,378 INFO L470 AbstractCegarLoop]: Abstraction has 98564 states and 556182 transitions. [2021-10-06 21:36:04,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:04,378 INFO L276 IsEmpty]: Start isEmpty. Operand 98564 states and 556182 transitions. [2021-10-06 21:36:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:36:05,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:05,463 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, 1, 1, 1, 1] [2021-10-06 21:36:05,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:05,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:05,664 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:36:05,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:05,665 INFO L82 PathProgramCache]: Analyzing trace with hash -255332344, now seen corresponding path program 66 times [2021-10-06 21:36:05,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:05,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932331418] [2021-10-06 21:36:05,666 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:36:05,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:05,668 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:05,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-06 21:36:06,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:36:06,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:06,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:36:06,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:06,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:07,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:07,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932331418] [2021-10-06 21:36:07,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932331418] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:07,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:07,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:36:07,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961083234] [2021-10-06 21:36:07,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:36:07,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:07,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:36:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:36:07,524 INFO L87 Difference]: Start difference. First operand 98564 states and 556182 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2021-10-06 21:36:16,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:16,532 INFO L93 Difference]: Finished difference Result 135348 states and 726706 transitions. [2021-10-06 21:36:16,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:36:16,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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 30 [2021-10-06 21:36:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:18,243 INFO L225 Difference]: With dead ends: 135348 [2021-10-06 21:36:18,243 INFO L226 Difference]: Without dead ends: 135348 [2021-10-06 21:36:18,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4206.8ms TimeCoverageRelationStatistics Valid=488, Invalid=1768, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:36:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135348 states. [2021-10-06 21:36:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135348 to 106766. [2021-10-06 21:36:27,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106766 states, 106765 states have (on average 5.684550180302534) internal successors, (606911), 106765 states have internal predecessors, (606911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106766 states to 106766 states and 606911 transitions. [2021-10-06 21:36:28,952 INFO L78 Accepts]: Start accepts. Automaton has 106766 states and 606911 transitions. Word has length 30 [2021-10-06 21:36:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:28,952 INFO L470 AbstractCegarLoop]: Abstraction has 106766 states and 606911 transitions. [2021-10-06 21:36:28,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2021-10-06 21:36:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 106766 states and 606911 transitions. [2021-10-06 21:36:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:36:29,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:29,524 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, 1, 1, 1, 1] [2021-10-06 21:36:29,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:29,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:29,731 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 21:36:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:29,732 INFO L82 PathProgramCache]: Analyzing trace with hash 792241492, now seen corresponding path program 67 times [2021-10-06 21:36:29,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:29,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720784289] [2021-10-06 21:36:29,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:36:29,733 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:29,736 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:29,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-06 21:36:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:36:30,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:36:30,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:30,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:31,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:31,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720784289] [2021-10-06 21:36:31,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720784289] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:31,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:31,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:36:31,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837644475] [2021-10-06 21:36:31,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:36:31,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:36:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:36:31,298 INFO L87 Difference]: Start difference. First operand 106766 states and 606911 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-10-06 21:36:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:34,653 INFO L93 Difference]: Finished difference Result 116734 states and 656168 transitions. [2021-10-06 21:36:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:36:34,654 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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 30 [2021-10-06 21:36:34,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:36,228 INFO L225 Difference]: With dead ends: 116734 [2021-10-06 21:36:36,229 INFO L226 Difference]: Without dead ends: 116628 [2021-10-06 21:36:36,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1172.9ms TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:36:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116628 states. [2021-10-06 21:36:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116628 to 110692. [2021-10-06 21:36:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110692 states, 110691 states have (on average 5.707455890722823) internal successors, (631764), 110691 states have internal predecessors, (631764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-06 21:36:43,061 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:36:43,068 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:36:43,069 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 [2021-10-06 21:36:43,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:43,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:43,264 WARN L594 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). [2021-10-06 21:36:43,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:36:43,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:36:43,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:36:43,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:36:43,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:36:43,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:36:43,266 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:36:43,267 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:36:43,268 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:36:43,268 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:36:43,268 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-06 21:36:43,272 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:36:43,272 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:36:43,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:36:43 BasicIcfg [2021-10-06 21:36:43,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:36:43,275 INFO L168 Benchmark]: Toolchain (without parser) took 647276.46 ms. Allocated memory was 159.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 132.8 MB in the beginning and 5.3 GB in the end (delta: -5.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 8.0 GB. [2021-10-06 21:36:43,275 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:36:43,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.37 ms. Allocated memory is still 159.4 MB. Free memory was 132.4 MB in the beginning and 121.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:36:43,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.09 ms. Allocated memory is still 159.4 MB. Free memory was 121.3 MB in the beginning and 119.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:36:43,276 INFO L168 Benchmark]: Boogie Preprocessor took 55.62 ms. Allocated memory is still 159.4 MB. Free memory was 119.2 MB in the beginning and 117.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:36:43,276 INFO L168 Benchmark]: RCFGBuilder took 829.29 ms. Allocated memory is still 159.4 MB. Free memory was 117.7 MB in the beginning and 98.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:36:43,276 INFO L168 Benchmark]: TraceAbstraction took 646032.46 ms. Allocated memory was 159.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 98.2 MB in the beginning and 5.3 GB in the end (delta: -5.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 8.0 GB. [2021-10-06 21:36:43,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.37 ms. Allocated memory is still 159.4 MB. Free memory was 132.4 MB in the beginning and 121.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.09 ms. Allocated memory is still 159.4 MB. Free memory was 121.3 MB in the beginning and 119.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.62 ms. Allocated memory is still 159.4 MB. Free memory was 119.2 MB in the beginning and 117.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 829.29 ms. Allocated memory is still 159.4 MB. Free memory was 117.7 MB in the beginning and 98.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 646032.46 ms. Allocated memory was 159.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 98.2 MB in the beginning and 5.3 GB in the end (delta: -5.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12172.2ms, 137 PlacesBefore, 60 PlacesAfterwards, 133 TransitionsBefore, 51 TransitionsAfterwards, 2736 CoEnabledTransitionPairs, 6 FixpointIterations, 55 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 125 TotalNumberOfCompositions, 3105 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2970, positive: 2963, positive conditional: 0, positive unconditional: 2963, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1626, positive: 1619, positive conditional: 0, positive unconditional: 1619, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1626, positive: 1619, positive conditional: 0, positive unconditional: 1619, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2970, positive: 1344, positive conditional: 0, positive unconditional: 1344, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1626, unknown conditional: 0, unknown unconditional: 1626] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 144, Positive conditional cache size: 0, Positive unconditional cache size: 144, 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: 91]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while ReachableStatesComputation was computing reachable states (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 83]: 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 (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 81]: 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 (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 84]: 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 (100609 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 82]: 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 (100609 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 161 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 645827.5ms, OverallIterations: 99, TraceHistogramMax: 3, EmptinessCheckTime: 20689.8ms, AutomataDifference: 275801.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12281.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13222 SDtfs, 31023 SDslu, 81444 SDs, 0 SdLazy, 20282 SolverSat, 2660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53179.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7701 GetRequests, 5337 SyntacticMatches, 0 SemanticMatches, 2364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17759 ImplicationChecksByTransitivity, 126210.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=106766occurred in iteration=98, InterpolantAutomatonStates: 2085, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 212737.5ms AutomataMinimizationTime, 99 MinimizatonAttempts, 1326626 StatesRemovedByMinimization, 88 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 898.8ms SsaConstructionTime, 12712.1ms SatisfiabilityAnalysisTime, 50024.4ms InterpolantComputationTime, 2619 NumberOfCodeBlocks, 2619 NumberOfCodeBlocksAsserted, 183 NumberOfCheckSat, 5040 ConstructedInterpolants, 12 QuantifiedInterpolants, 16566 SizeOfPredicates, 277 NumberOfNonLiveVariables, 10949 ConjunctsInSsa, 758 ConjunctsInUnsatCore, 198 InterpolantComputations, 38 PerfectInterpolantSequences, 260/1004 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