/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/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:48:28,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:48:28,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:48:28,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:48:28,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:48:28,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:48:28,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:48:28,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:48:28,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:48:28,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:48:28,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:48:28,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:48:28,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:48:28,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:48:28,370 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:48:28,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:48:28,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:48:28,371 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:48:28,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:48:28,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:48:28,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:48:28,373 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:48:28,373 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:48:28,373 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:48:28,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:48:28,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:48:28,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:48:28,374 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:48:28,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:48:28,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:48:28,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:48:28,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:48:28,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:48:28,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:28,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:48:28,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:48:28,376 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:48:28,376 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:48:28,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:48:28,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:48:28,377 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:48:28,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:48:28,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:48:28,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:48:28,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:48:28,792 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:48:28,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-07 15:48:28,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8334a91ce/a6da6d4e1cf64e6193e09fb7f5c9c2c4/FLAG6ec834358 [2021-10-07 15:48:29,537 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:48:29,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-07 15:48:29,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8334a91ce/a6da6d4e1cf64e6193e09fb7f5c9c2c4/FLAG6ec834358 [2021-10-07 15:48:29,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8334a91ce/a6da6d4e1cf64e6193e09fb7f5c9c2c4 [2021-10-07 15:48:29,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:48:29,926 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:48:29,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:29,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:48:29,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:48:29,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:29" (1/1) ... [2021-10-07 15:48:29,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c825008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:29, skipping insertion in model container [2021-10-07 15:48:29,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:29" (1/1) ... [2021-10-07 15:48:29,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:48:29,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:48:30,291 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/parallel-misc-4.wvr.c[2413,2426] [2021-10-07 15:48:30,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:30,322 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:48:30,379 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/parallel-misc-4.wvr.c[2413,2426] [2021-10-07 15:48:30,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:30,413 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:48:30,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30 WrapperNode [2021-10-07 15:48:30,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:30,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:30,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:48:30,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:48:30,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:30,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:48:30,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:48:30,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:48:30,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:48:30,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:48:30,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:48:30,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:48:30,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (1/1) ... [2021-10-07 15:48:30,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:48:30,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:48:30,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:48:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:48:30,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:48:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:48:30,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:48:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:48:30,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:48:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:48:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:48:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:48:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:48:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:48:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:48:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:48:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:48:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:48:30,706 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:48:31,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:48:31,277 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-07 15:48:31,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:31 BoogieIcfgContainer [2021-10-07 15:48:31,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:48:31,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:48:31,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:48:31,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:48:31,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:48:29" (1/3) ... [2021-10-07 15:48:31,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17601df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:31, skipping insertion in model container [2021-10-07 15:48:31,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:30" (2/3) ... [2021-10-07 15:48:31,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17601df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:31, skipping insertion in model container [2021-10-07 15:48:31,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:31" (3/3) ... [2021-10-07 15:48:31,289 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2021-10-07 15:48:31,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:48:31,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-07 15:48:31,296 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:48:31,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,335 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,335 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,335 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,335 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,338 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,338 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,338 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,339 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,345 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,345 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,345 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:31,356 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:48:31,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:48:31,419 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:48:31,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-07 15:48:31,436 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:48:31,447 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 110 transitions, 244 flow [2021-10-07 15:48:31,450 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 110 transitions, 244 flow [2021-10-07 15:48:31,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 110 transitions, 244 flow [2021-10-07 15:48:31,511 INFO L129 PetriNetUnfolder]: 7/107 cut-off events. [2021-10-07 15:48:31,512 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:48:31,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 7/107 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-10-07 15:48:31,524 INFO L116 LiptonReduction]: Number of co-enabled transitions 1190 [2021-10-07 15:48:42,598 INFO L131 LiptonReduction]: Checked pairs total: 2874 [2021-10-07 15:48:42,599 INFO L133 LiptonReduction]: Total number of compositions: 100 [2021-10-07 15:48:42,610 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 41 transitions, 106 flow [2021-10-07 15:48:42,642 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:48:42,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:42,653 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:48:42,653 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:42,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:42,660 INFO L82 PathProgramCache]: Analyzing trace with hash 413, now seen corresponding path program 1 times [2021-10-07 15:48:42,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:42,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168135680] [2021-10-07 15:48:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:42,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:42,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:42,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:48:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:42,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:48:42,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:42,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:42,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:42,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168135680] [2021-10-07 15:48:42,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168135680] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:42,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:42,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:48:42,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215201060] [2021-10-07 15:48:42,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:48:42,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:48:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:48:42,787 INFO L87 Difference]: Start difference. First operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:42,820 INFO L93 Difference]: Finished difference Result 252 states and 844 transitions. [2021-10-07 15:48:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:48:42,822 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 15:48:42,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:42,840 INFO L225 Difference]: With dead ends: 252 [2021-10-07 15:48:42,841 INFO L226 Difference]: Without dead ends: 252 [2021-10-07 15:48:42,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:48:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-07 15:48:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-07 15:48:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 241 states have (on average 3.5020746887966805) internal successors, (844), 251 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 844 transitions. [2021-10-07 15:48:42,918 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 844 transitions. Word has length 1 [2021-10-07 15:48:42,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:42,919 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 844 transitions. [2021-10-07 15:48:42,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 844 transitions. [2021-10-07 15:48:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:48:42,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:42,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:48:42,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:43,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:43,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash 404918, now seen corresponding path program 1 times [2021-10-07 15:48:43,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:43,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518161099] [2021-10-07 15:48:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:43,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:43,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:43,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:48:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:43,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:43,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:43,343 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:48:43,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:48:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:43,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:43,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:43,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518161099] [2021-10-07 15:48:43,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518161099] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:43,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:43,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:43,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578157236] [2021-10-07 15:48:43,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:43,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:43,416 INFO L87 Difference]: Start difference. First operand 252 states and 844 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:43,474 INFO L93 Difference]: Finished difference Result 240 states and 813 transitions. [2021-10-07 15:48:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:48:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:43,480 INFO L225 Difference]: With dead ends: 240 [2021-10-07 15:48:43,481 INFO L226 Difference]: Without dead ends: 240 [2021-10-07 15:48:43,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-07 15:48:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-10-07 15:48:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 3.5194805194805197) internal successors, (813), 239 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 813 transitions. [2021-10-07 15:48:43,510 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 813 transitions. Word has length 3 [2021-10-07 15:48:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:43,512 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 813 transitions. [2021-10-07 15:48:43,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 813 transitions. [2021-10-07 15:48:43,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:48:43,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:43,513 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:48:43,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:43,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:43,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:43,727 INFO L82 PathProgramCache]: Analyzing trace with hash 404916, now seen corresponding path program 1 times [2021-10-07 15:48:43,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:43,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153287497] [2021-10-07 15:48:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:43,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:43,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:43,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:43,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:48:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:43,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:48:43,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:43,975 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:48:43,979 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:48:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:44,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:44,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:44,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153287497] [2021-10-07 15:48:44,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153287497] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:44,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:44,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:44,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155159984] [2021-10-07 15:48:44,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:44,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:44,161 INFO L87 Difference]: Start difference. First operand 240 states and 813 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:44,218 INFO L93 Difference]: Finished difference Result 228 states and 782 transitions. [2021-10-07 15:48:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:48:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:44,223 INFO L225 Difference]: With dead ends: 228 [2021-10-07 15:48:44,223 INFO L226 Difference]: Without dead ends: 228 [2021-10-07 15:48:44,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:44,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-07 15:48:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-07 15:48:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 3.5384615384615383) internal successors, (782), 227 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 782 transitions. [2021-10-07 15:48:44,246 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 782 transitions. Word has length 3 [2021-10-07 15:48:44,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:44,247 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 782 transitions. [2021-10-07 15:48:44,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 782 transitions. [2021-10-07 15:48:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:48:44,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:44,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:48:44,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:44,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,461 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:44,462 INFO L82 PathProgramCache]: Analyzing trace with hash 389134153, now seen corresponding path program 1 times [2021-10-07 15:48:44,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:44,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471102625] [2021-10-07 15:48:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:44,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:44,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:44,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:48:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:44,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:44,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:44,576 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:48:44,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:48:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:44,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:44,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:44,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471102625] [2021-10-07 15:48:44,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471102625] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:44,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:44,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:44,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927323495] [2021-10-07 15:48:44,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:44,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:44,645 INFO L87 Difference]: Start difference. First operand 228 states and 782 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:44,685 INFO L93 Difference]: Finished difference Result 210 states and 723 transitions. [2021-10-07 15:48:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:48:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:44,689 INFO L225 Difference]: With dead ends: 210 [2021-10-07 15:48:44,690 INFO L226 Difference]: Without dead ends: 210 [2021-10-07 15:48:44,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-07 15:48:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-10-07 15:48:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 3.526829268292683) internal successors, (723), 209 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 723 transitions. [2021-10-07 15:48:44,708 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 723 transitions. Word has length 5 [2021-10-07 15:48:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:44,708 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 723 transitions. [2021-10-07 15:48:44,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 723 transitions. [2021-10-07 15:48:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:48:44,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:44,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:48:44,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-07 15:48:44,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,923 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:44,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:44,923 INFO L82 PathProgramCache]: Analyzing trace with hash 389134154, now seen corresponding path program 1 times [2021-10-07 15:48:44,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:44,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365851265] [2021-10-07 15:48:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:44,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:44,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:44,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:48:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:44,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:48:44,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:45,135 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:48:45,136 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:48:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:45,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:45,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:45,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365851265] [2021-10-07 15:48:45,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365851265] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:45,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:45,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:45,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073177829] [2021-10-07 15:48:45,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:45,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:45,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:45,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:45,317 INFO L87 Difference]: Start difference. First operand 210 states and 723 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:45,346 INFO L93 Difference]: Finished difference Result 192 states and 664 transitions. [2021-10-07 15:48:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:45,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:48:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:45,349 INFO L225 Difference]: With dead ends: 192 [2021-10-07 15:48:45,349 INFO L226 Difference]: Without dead ends: 192 [2021-10-07 15:48:45,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-07 15:48:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-07 15:48:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 3.513227513227513) internal successors, (664), 191 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 664 transitions. [2021-10-07 15:48:45,361 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 664 transitions. Word has length 5 [2021-10-07 15:48:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:45,361 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 664 transitions. [2021-10-07 15:48:45,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 664 transitions. [2021-10-07 15:48:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:48:45,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:45,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:45,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-07 15:48:45,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:45,578 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:45,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:45,579 INFO L82 PathProgramCache]: Analyzing trace with hash 295777236, now seen corresponding path program 1 times [2021-10-07 15:48:45,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:45,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295036274] [2021-10-07 15:48:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:45,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:45,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:45,582 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:45,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:48:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:45,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:48:45,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:45,838 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:48:45,839 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 4 case distinctions, treesize of input 29 treesize of output 59 [2021-10-07 15:48:45,855 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 60 treesize of output 58 [2021-10-07 15:48:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:46,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:46,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:46,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295036274] [2021-10-07 15:48:46,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295036274] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:46,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:46,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:46,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862422764] [2021-10-07 15:48:46,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:46,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:46,212 INFO L87 Difference]: Start difference. First operand 192 states and 664 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:46,240 INFO L93 Difference]: Finished difference Result 160 states and 536 transitions. [2021-10-07 15:48:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:46,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:48:46,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:46,243 INFO L225 Difference]: With dead ends: 160 [2021-10-07 15:48:46,243 INFO L226 Difference]: Without dead ends: 160 [2021-10-07 15:48:46,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-07 15:48:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-07 15:48:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 3.392405063291139) internal successors, (536), 159 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 536 transitions. [2021-10-07 15:48:46,252 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 536 transitions. Word has length 7 [2021-10-07 15:48:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:46,253 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 536 transitions. [2021-10-07 15:48:46,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,253 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 536 transitions. [2021-10-07 15:48:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:48:46,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:46,255 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:46,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:46,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:46,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:46,470 INFO L82 PathProgramCache]: Analyzing trace with hash 295777237, now seen corresponding path program 1 times [2021-10-07 15:48:46,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:46,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078978693] [2021-10-07 15:48:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:46,474 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:46,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:46,476 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:46,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:48:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:46,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:48:46,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:46,589 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:48:46,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:48:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:46,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:46,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:46,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078978693] [2021-10-07 15:48:46,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078978693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:46,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:46,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:48:46,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345309792] [2021-10-07 15:48:46,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:48:46,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:46,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:48:46,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:48:46,707 INFO L87 Difference]: Start difference. First operand 160 states and 536 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:46,747 INFO L93 Difference]: Finished difference Result 128 states and 408 transitions. [2021-10-07 15:48:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:46,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 7 [2021-10-07 15:48:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:46,750 INFO L225 Difference]: With dead ends: 128 [2021-10-07 15:48:46,750 INFO L226 Difference]: Without dead ends: 128 [2021-10-07 15:48:46,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:48:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-07 15:48:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-07 15:48:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 408 transitions. [2021-10-07 15:48:46,758 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 408 transitions. Word has length 7 [2021-10-07 15:48:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:46,758 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 408 transitions. [2021-10-07 15:48:46,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 408 transitions. [2021-10-07 15:48:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:48:46,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:46,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:46,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-07 15:48:46,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:46,980 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:46,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1826700178, now seen corresponding path program 1 times [2021-10-07 15:48:46,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:46,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327266741] [2021-10-07 15:48:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:46,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:46,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:46,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:48:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:47,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:48:47,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:47,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:47,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:47,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327266741] [2021-10-07 15:48:47,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327266741] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:47,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:47,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:48:47,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894955511] [2021-10-07 15:48:47,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:47,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:47,159 INFO L87 Difference]: Start difference. First operand 128 states and 408 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:47,191 INFO L93 Difference]: Finished difference Result 124 states and 368 transitions. [2021-10-07 15:48:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:48:47,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 16 [2021-10-07 15:48:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:47,193 INFO L225 Difference]: With dead ends: 124 [2021-10-07 15:48:47,193 INFO L226 Difference]: Without dead ends: 88 [2021-10-07 15:48:47,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-07 15:48:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-07 15:48:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 239 transitions. [2021-10-07 15:48:47,199 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 239 transitions. Word has length 16 [2021-10-07 15:48:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:47,200 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 239 transitions. [2021-10-07 15:48:47,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 239 transitions. [2021-10-07 15:48:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:48:47,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:47,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:47,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:47,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:47,417 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:47,418 INFO L82 PathProgramCache]: Analyzing trace with hash -293618728, now seen corresponding path program 2 times [2021-10-07 15:48:47,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:47,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721811196] [2021-10-07 15:48:47,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:47,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:47,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:47,421 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:47,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:48:47,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:48:47,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:47,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:48:47,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:47,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:47,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:47,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721811196] [2021-10-07 15:48:47,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721811196] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:47,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:47,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:48:47,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271023112] [2021-10-07 15:48:47,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:47,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:47,624 INFO L87 Difference]: Start difference. First operand 88 states and 239 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:47,703 INFO L93 Difference]: Finished difference Result 218 states and 628 transitions. [2021-10-07 15:48:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:48:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 16 [2021-10-07 15:48:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:47,709 INFO L225 Difference]: With dead ends: 218 [2021-10-07 15:48:47,709 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 15:48:47,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:48:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 15:48:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-10-07 15:48:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 3.0059880239520957) internal successors, (502), 167 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 502 transitions. [2021-10-07 15:48:47,719 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 502 transitions. Word has length 16 [2021-10-07 15:48:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:47,720 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 502 transitions. [2021-10-07 15:48:47,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,720 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 502 transitions. [2021-10-07 15:48:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:48:47,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:47,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:47,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:47,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:47,941 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:47,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:47,942 INFO L82 PathProgramCache]: Analyzing trace with hash 399276935, now seen corresponding path program 1 times [2021-10-07 15:48:47,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:47,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119741533] [2021-10-07 15:48:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:47,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:47,945 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:47,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:48:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:48,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:48:48,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:48,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:48,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:48,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119741533] [2021-10-07 15:48:48,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119741533] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:48,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:48,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:48:48,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862640663] [2021-10-07 15:48:48,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:48,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:48,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:48,129 INFO L87 Difference]: Start difference. First operand 168 states and 502 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:48,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:48,142 INFO L93 Difference]: Finished difference Result 242 states and 682 transitions. [2021-10-07 15:48:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:48:48,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 18 [2021-10-07 15:48:48,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:48,146 INFO L225 Difference]: With dead ends: 242 [2021-10-07 15:48:48,146 INFO L226 Difference]: Without dead ends: 242 [2021-10-07 15:48:48,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:48,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-07 15:48:48,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 182. [2021-10-07 15:48:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.972375690607735) internal successors, (538), 181 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 538 transitions. [2021-10-07 15:48:48,156 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 538 transitions. Word has length 18 [2021-10-07 15:48:48,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:48,156 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 538 transitions. [2021-10-07 15:48:48,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 538 transitions. [2021-10-07 15:48:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:48:48,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:48,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:48,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:48,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:48,370 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:48,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:48,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1301348123, now seen corresponding path program 1 times [2021-10-07 15:48:48,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:48,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688368627] [2021-10-07 15:48:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:48,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:48,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:48,374 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:48,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:48:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:48,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:48:48,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:48,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:48,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:48,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688368627] [2021-10-07 15:48:48,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688368627] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:48,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:48,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:48:48,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256773605] [2021-10-07 15:48:48,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:48,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:48,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:48,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:48,562 INFO L87 Difference]: Start difference. First operand 182 states and 538 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:48,577 INFO L93 Difference]: Finished difference Result 232 states and 642 transitions. [2021-10-07 15:48:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:48:48,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 18 [2021-10-07 15:48:48,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:48,580 INFO L225 Difference]: With dead ends: 232 [2021-10-07 15:48:48,580 INFO L226 Difference]: Without dead ends: 232 [2021-10-07 15:48:48,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-07 15:48:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 182. [2021-10-07 15:48:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9171270718232045) internal successors, (528), 181 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 528 transitions. [2021-10-07 15:48:48,589 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 528 transitions. Word has length 18 [2021-10-07 15:48:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:48,590 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 528 transitions. [2021-10-07 15:48:48,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:48,590 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 528 transitions. [2021-10-07 15:48:48,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:48,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:48,591 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:48,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:48,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:48,803 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:48,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:48,804 INFO L82 PathProgramCache]: Analyzing trace with hash 625578938, now seen corresponding path program 1 times [2021-10-07 15:48:48,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:48,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691180221] [2021-10-07 15:48:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:48,806 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:48,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:48,807 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:48,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:48:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:48,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:48:48,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:48,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:49,031 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:49,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691180221] [2021-10-07 15:48:49,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691180221] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:49,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:49,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 15:48:49,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904263301] [2021-10-07 15:48:49,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:48:49,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:48:49,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:48:49,034 INFO L87 Difference]: Start difference. First operand 182 states and 528 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:49,060 INFO L93 Difference]: Finished difference Result 222 states and 591 transitions. [2021-10-07 15:48:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:48:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 20 [2021-10-07 15:48:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:49,063 INFO L225 Difference]: With dead ends: 222 [2021-10-07 15:48:49,063 INFO L226 Difference]: Without dead ends: 222 [2021-10-07 15:48:49,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:48:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-07 15:48:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 182. [2021-10-07 15:48:49,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.773480662983425) internal successors, (502), 181 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 502 transitions. [2021-10-07 15:48:49,071 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 502 transitions. Word has length 20 [2021-10-07 15:48:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:49,071 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 502 transitions. [2021-10-07 15:48:49,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 502 transitions. [2021-10-07 15:48:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:49,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:49,073 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] [2021-10-07 15:48:49,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:49,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:49,286 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1392507048, now seen corresponding path program 1 times [2021-10-07 15:48:49,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:49,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807174076] [2021-10-07 15:48:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:49,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:49,290 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:49,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:48:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:49,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:48:49,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:49,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:49,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:49,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807174076] [2021-10-07 15:48:49,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807174076] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:49,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:49,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:48:49,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658380389] [2021-10-07 15:48:49,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:48:49,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:49,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:48:49,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:48:49,557 INFO L87 Difference]: Start difference. First operand 182 states and 502 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2021-10-07 15:48:49,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:49,764 INFO L93 Difference]: Finished difference Result 416 states and 1099 transitions. [2021-10-07 15:48:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:48:49,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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 20 [2021-10-07 15:48:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:49,768 INFO L225 Difference]: With dead ends: 416 [2021-10-07 15:48:49,768 INFO L226 Difference]: Without dead ends: 358 [2021-10-07 15:48:49,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 81.1ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-07 15:48:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 206. [2021-10-07 15:48:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.897560975609756) internal successors, (594), 205 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 594 transitions. [2021-10-07 15:48:49,779 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 594 transitions. Word has length 20 [2021-10-07 15:48:49,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:49,779 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 594 transitions. [2021-10-07 15:48:49,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2021-10-07 15:48:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 594 transitions. [2021-10-07 15:48:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:49,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:49,781 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] [2021-10-07 15:48:49,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:49,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:49,993 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:49,994 INFO L82 PathProgramCache]: Analyzing trace with hash 356766818, now seen corresponding path program 1 times [2021-10-07 15:48:49,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:49,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139451315] [2021-10-07 15:48:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:49,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:49,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:49,997 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:50,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:48:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:50,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:48:50,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:50,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:50,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:50,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139451315] [2021-10-07 15:48:50,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139451315] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:50,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:50,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:48:50,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687457216] [2021-10-07 15:48:50,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:48:50,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:48:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:48:50,305 INFO L87 Difference]: Start difference. First operand 206 states and 594 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-07 15:48:50,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:50,796 INFO L93 Difference]: Finished difference Result 1034 states and 2890 transitions. [2021-10-07 15:48:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:48:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 20 [2021-10-07 15:48:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:50,804 INFO L225 Difference]: With dead ends: 1034 [2021-10-07 15:48:50,805 INFO L226 Difference]: Without dead ends: 926 [2021-10-07 15:48:50,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 218.9ms TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:48:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-07 15:48:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 514. [2021-10-07 15:48:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.0331384015594542) internal successors, (1556), 513 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1556 transitions. [2021-10-07 15:48:50,831 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1556 transitions. Word has length 20 [2021-10-07 15:48:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:50,832 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1556 transitions. [2021-10-07 15:48:50,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2021-10-07 15:48:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1556 transitions. [2021-10-07 15:48:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:48:50,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:50,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:50,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:51,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:51,042 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:51,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1078517299, now seen corresponding path program 1 times [2021-10-07 15:48:51,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:51,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103964891] [2021-10-07 15:48:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:51,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:51,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:51,045 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:51,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:48:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:51,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:51,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:51,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:51,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:51,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103964891] [2021-10-07 15:48:51,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103964891] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:51,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:51,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:48:51,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627190404] [2021-10-07 15:48:51,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:48:51,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:48:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:48:51,341 INFO L87 Difference]: Start difference. First operand 514 states and 1556 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:51,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:51,769 INFO L93 Difference]: Finished difference Result 1684 states and 5069 transitions. [2021-10-07 15:48:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:48:51,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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 22 [2021-10-07 15:48:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:51,782 INFO L225 Difference]: With dead ends: 1684 [2021-10-07 15:48:51,782 INFO L226 Difference]: Without dead ends: 1558 [2021-10-07 15:48:51,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 167.6ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:48:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-10-07 15:48:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1098. [2021-10-07 15:48:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 3.163172288058341) internal successors, (3470), 1097 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 3470 transitions. [2021-10-07 15:48:51,831 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 3470 transitions. Word has length 22 [2021-10-07 15:48:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:51,831 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 3470 transitions. [2021-10-07 15:48:51,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 3470 transitions. [2021-10-07 15:48:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:48:51,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:51,836 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] [2021-10-07 15:48:51,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:52,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:52,048 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:52,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:52,049 INFO L82 PathProgramCache]: Analyzing trace with hash -80678561, now seen corresponding path program 1 times [2021-10-07 15:48:52,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:52,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180443309] [2021-10-07 15:48:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:52,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:52,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:52,052 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:52,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:48:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:52,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:48:52,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:52,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:52,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:52,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180443309] [2021-10-07 15:48:52,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180443309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:52,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:52,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 15:48:52,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295316555] [2021-10-07 15:48:52,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:48:52,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:52,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:48:52,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:48:52,359 INFO L87 Difference]: Start difference. First operand 1098 states and 3470 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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) [2021-10-07 15:48:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:52,389 INFO L93 Difference]: Finished difference Result 994 states and 2764 transitions. [2021-10-07 15:48:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:48:52,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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 22 [2021-10-07 15:48:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:52,398 INFO L225 Difference]: With dead ends: 994 [2021-10-07 15:48:52,398 INFO L226 Difference]: Without dead ends: 994 [2021-10-07 15:48:52,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:48:52,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-10-07 15:48:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 914. [2021-10-07 15:48:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 2.8127053669222346) internal successors, (2568), 913 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2568 transitions. [2021-10-07 15:48:52,461 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2568 transitions. Word has length 22 [2021-10-07 15:48:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:52,461 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 2568 transitions. [2021-10-07 15:48:52,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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) [2021-10-07 15:48:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2568 transitions. [2021-10-07 15:48:52,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:48:52,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:52,465 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] [2021-10-07 15:48:52,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:52,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:52,678 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:52,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:52,680 INFO L82 PathProgramCache]: Analyzing trace with hash -296105680, now seen corresponding path program 1 times [2021-10-07 15:48:52,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:52,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487909450] [2021-10-07 15:48:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:52,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:52,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:52,682 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:52,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:48:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:52,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:48:52,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:52,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:53,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:53,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487909450] [2021-10-07 15:48:53,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487909450] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:53,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:53,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:48:53,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597882125] [2021-10-07 15:48:53,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:48:53,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:53,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:48:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:53,047 INFO L87 Difference]: Start difference. First operand 914 states and 2568 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:53,200 INFO L93 Difference]: Finished difference Result 902 states and 2534 transitions. [2021-10-07 15:48:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:48:53,201 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:48:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:53,201 INFO L225 Difference]: With dead ends: 902 [2021-10-07 15:48:53,201 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 15:48:53,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 15:48:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 15:48:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 15:48:53,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-10-07 15:48:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:53,202 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 15:48:53,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 15:48:53,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 15:48:53,206 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:48:53,206 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:48:53,206 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:48:53,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:48:53,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:48:53,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:48:53,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:48:53,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:48:53,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:48:53,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:48:53,208 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:48:53,208 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:48:53,208 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:48:53,208 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:48:53,208 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:48:53,209 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:48:53,209 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:48:53,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:53,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:53,433 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:48:53,433 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:48:53,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:48:53 BasicIcfg [2021-10-07 15:48:53,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:48:53,436 INFO L168 Benchmark]: Toolchain (without parser) took 23516.07 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 151.4 MB in the beginning and 132.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:53,437 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory was 140.5 MB in the beginning and 140.4 MB in the end (delta: 102.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:48:53,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.23 ms. Allocated memory is still 168.8 MB. Free memory was 151.0 MB in the beginning and 139.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:53,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.71 ms. Allocated memory is still 168.8 MB. Free memory was 139.8 MB in the beginning and 138.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:53,438 INFO L168 Benchmark]: Boogie Preprocessor took 61.21 ms. Allocated memory is still 168.8 MB. Free memory was 138.1 MB in the beginning and 149.6 MB in the end (delta: -11.6 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:53,438 INFO L168 Benchmark]: RCFGBuilder took 728.58 ms. Allocated memory is still 168.8 MB. Free memory was 149.6 MB in the beginning and 134.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:53,439 INFO L168 Benchmark]: TraceAbstraction took 22153.29 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 134.2 MB in the beginning and 132.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 37.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:53,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory was 140.5 MB in the beginning and 140.4 MB in the end (delta: 102.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 487.23 ms. Allocated memory is still 168.8 MB. Free memory was 151.0 MB in the beginning and 139.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.71 ms. Allocated memory is still 168.8 MB. Free memory was 139.8 MB in the beginning and 138.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.21 ms. Allocated memory is still 168.8 MB. Free memory was 138.1 MB in the beginning and 149.6 MB in the end (delta: -11.6 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 728.58 ms. Allocated memory is still 168.8 MB. Free memory was 149.6 MB in the beginning and 134.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22153.29 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 134.2 MB in the beginning and 132.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 37.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11148.4ms, 113 PlacesBefore, 47 PlacesAfterwards, 110 TransitionsBefore, 41 TransitionsAfterwards, 1190 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 100 TotalNumberOfCompositions, 2874 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1863, positive: 1786, positive conditional: 0, positive unconditional: 1786, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 836, positive: 805, positive conditional: 0, positive unconditional: 805, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 836, positive: 797, positive conditional: 0, positive unconditional: 797, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 184, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 104, negative conditional: 0, negative unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1863, positive: 981, positive conditional: 0, positive unconditional: 981, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 836, unknown conditional: 0, unknown unconditional: 836] , Statistics on independence cache: Total cache size (in pairs): 126, Positive cache size: 115, Positive conditional cache size: 0, Positive unconditional cache size: 115, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 95]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 95]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 81]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 127 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 22023.2ms, OverallIterations: 17, TraceHistogramMax: 2, EmptinessCheckTime: 39.8ms, AutomataDifference: 1905.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11222.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 452 SDtfs, 1040 SDslu, 705 SDs, 0 SdLazy, 612 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 943.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 451 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 825.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1098occurred in iteration=15, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 338.4ms AutomataMinimizationTime, 17 MinimizatonAttempts, 1258 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 167.8ms SsaConstructionTime, 546.8ms SatisfiabilityAnalysisTime, 3153.9ms InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 420 ConstructedInterpolants, 6 QuantifiedInterpolants, 1369 SizeOfPredicates, 81 NumberOfNonLiveVariables, 1173 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 34 InterpolantComputations, 22 PerfectInterpolantSequences, 30/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 15:48:53,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...