/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/bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:13:28,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:13:28,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:13:28,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:13:28,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:13:28,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:13:28,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:13:28,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:13:28,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:13:28,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:13:28,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:13:28,848 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:13:28,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:13:28,849 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:13:28,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:13:28,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:13:28,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:13:28,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:13:28,851 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:13:28,851 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:13:28,852 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:13:28,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:13:28,852 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:13:28,852 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:13:28,853 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:13:28,853 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:13:28,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:13:28,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:13:28,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:13:28,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:13:28,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:13:28,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:13:28,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:13:28,855 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:13:28,855 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:13:28,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:13:28,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:13:28,856 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:13:29,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:13:29,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:13:29,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:13:29,298 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:13:29,299 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:13:29,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/bakery-2.wvr.c [2021-10-06 21:13:29,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a28c3c227/7a4487bece18413d840ffeaa7cb56085/FLAGfa3bfe938 [2021-10-06 21:13:29,982 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:13:29,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/bakery-2.wvr.c [2021-10-06 21:13:29,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a28c3c227/7a4487bece18413d840ffeaa7cb56085/FLAGfa3bfe938 [2021-10-06 21:13:30,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a28c3c227/7a4487bece18413d840ffeaa7cb56085 [2021-10-06 21:13:30,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:13:30,388 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:13:30,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:13:30,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:13:30,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:13:30,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bd0075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30, skipping insertion in model container [2021-10-06 21:13:30,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:13:30,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:13:30,720 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/bakery-2.wvr.c[2476,2489] [2021-10-06 21:13:30,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:13:30,741 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:13:30,789 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/bakery-2.wvr.c[2476,2489] [2021-10-06 21:13:30,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:13:30,816 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:13:30,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30 WrapperNode [2021-10-06 21:13:30,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:13:30,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:13:30,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:13:30,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:13:30,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:13:30,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:13:30,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:13:30,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:13:30,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:13:30,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:13:30,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:13:30,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:13:30,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (1/1) ... [2021-10-06 21:13:30,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:13:30,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:13:30,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:13:30,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:13:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:13:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:13:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:13:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:13:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:13:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:13:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:13:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:13:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:13:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:13:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:13:31,050 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:13:31,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:13:31,535 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-06 21:13:31,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:13:31 BoogieIcfgContainer [2021-10-06 21:13:31,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:13:31,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:13:31,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:13:31,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:13:31,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:13:30" (1/3) ... [2021-10-06 21:13:31,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a85583d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:13:31, skipping insertion in model container [2021-10-06 21:13:31,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:13:30" (2/3) ... [2021-10-06 21:13:31,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a85583d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:13:31, skipping insertion in model container [2021-10-06 21:13:31,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:13:31" (3/3) ... [2021-10-06 21:13:31,552 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.c [2021-10-06 21:13:31,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:13:31,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:13:31,560 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:13:31,639 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,644 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,647 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,648 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,649 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,649 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,649 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,650 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,650 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,650 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,650 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,651 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,654 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,654 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,654 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,655 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,655 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,656 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,656 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,657 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,657 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,657 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,657 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,657 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,658 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,658 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,658 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,658 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,659 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,660 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,660 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,660 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,660 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,660 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,661 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,662 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,662 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,662 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,663 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,663 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,663 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,663 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,664 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,664 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,665 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,665 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,665 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,667 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,668 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,668 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,668 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,668 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,669 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,670 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,670 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,671 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,671 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,671 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,672 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,672 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,672 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,672 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,673 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,674 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,674 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,674 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,674 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,680 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,681 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,681 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,681 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,682 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,682 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,694 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:13:31,717 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:13:31,781 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:13:31,792 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:13:31,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:13:31,829 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:13:31,841 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 138 transitions, 292 flow [2021-10-06 21:13:31,845 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 138 transitions, 292 flow [2021-10-06 21:13:31,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 138 transitions, 292 flow [2021-10-06 21:13:31,959 INFO L129 PetriNetUnfolder]: 8/136 cut-off events. [2021-10-06 21:13:31,959 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:13:31,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 136 events. 8/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2021-10-06 21:13:31,972 INFO L116 LiptonReduction]: Number of co-enabled transitions 2856 [2021-10-06 21:13:41,592 INFO L131 LiptonReduction]: Checked pairs total: 11019 [2021-10-06 21:13:41,592 INFO L133 LiptonReduction]: Total number of compositions: 135 [2021-10-06 21:13:41,602 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 47 transitions, 110 flow [2021-10-06 21:13:41,648 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 679 states, 669 states have (on average 2.820627802690583) internal successors, (1887), 678 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 679 states, 669 states have (on average 2.820627802690583) internal successors, (1887), 678 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:13:41,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:41,662 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:13:41,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:41,669 INFO L82 PathProgramCache]: Analyzing trace with hash 524, now seen corresponding path program 1 times [2021-10-06 21:13:41,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:41,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230188917] [2021-10-06 21:13:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:41,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:41,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:41,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:41,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:13:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:41,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:13:41,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:41,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:41,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:41,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230188917] [2021-10-06 21:13:41,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230188917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:41,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:41,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:13:41,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17911562] [2021-10-06 21:13:41,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:13:41,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:13:41,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:13:41,766 INFO L87 Difference]: Start difference. First operand has 679 states, 669 states have (on average 2.820627802690583) internal successors, (1887), 678 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:41,814 INFO L93 Difference]: Finished difference Result 676 states and 1780 transitions. [2021-10-06 21:13:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:13:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 21:13:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:41,841 INFO L225 Difference]: With dead ends: 676 [2021-10-06 21:13:41,841 INFO L226 Difference]: Without dead ends: 676 [2021-10-06 21:13:41,842 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 [2021-10-06 21:13:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-10-06 21:13:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2021-10-06 21:13:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 669 states have (on average 2.6606875934230194) internal successors, (1780), 675 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:41,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1780 transitions. [2021-10-06 21:13:41,984 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1780 transitions. Word has length 1 [2021-10-06 21:13:41,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:41,984 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 1780 transitions. [2021-10-06 21:13:41,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1780 transitions. [2021-10-06 21:13:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:13:41,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:41,988 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:13:42,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:42,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:42,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:42,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:42,192 INFO L82 PathProgramCache]: Analyzing trace with hash 517204, now seen corresponding path program 1 times [2021-10-06 21:13:42,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:42,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036686059] [2021-10-06 21:13:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:42,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:42,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:42,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:42,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:13:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:42,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:13:42,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:42,477 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:13:42,478 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 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:13:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:42,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:42,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:42,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036686059] [2021-10-06 21:13:42,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036686059] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:42,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:42,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:13:42,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741172521] [2021-10-06 21:13:42,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:13:42,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:13:42,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:42,628 INFO L87 Difference]: Start difference. First operand 676 states and 1780 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:42,674 INFO L93 Difference]: Finished difference Result 652 states and 1732 transitions. [2021-10-06 21:13:42,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:13:42,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:13:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:42,689 INFO L225 Difference]: With dead ends: 652 [2021-10-06 21:13:42,690 INFO L226 Difference]: Without dead ends: 652 [2021-10-06 21:13:42,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-10-06 21:13:42,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-10-06 21:13:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 647 states have (on average 2.6769706336939723) internal successors, (1732), 651 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1732 transitions. [2021-10-06 21:13:42,729 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1732 transitions. Word has length 3 [2021-10-06 21:13:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:42,729 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1732 transitions. [2021-10-06 21:13:42,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1732 transitions. [2021-10-06 21:13:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:13:42,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:42,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:13:42,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:42,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:42,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:42,945 INFO L82 PathProgramCache]: Analyzing trace with hash 517205, now seen corresponding path program 1 times [2021-10-06 21:13:42,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:42,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68215793] [2021-10-06 21:13:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:42,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:42,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:42,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:42,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:13:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:42,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:13:42,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:43,022 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 21:13:43,022 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-06 21:13:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:43,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:43,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:43,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68215793] [2021-10-06 21:13:43,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68215793] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:43,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:43,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:13:43,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203880782] [2021-10-06 21:13:43,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:13:43,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:43,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:13:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:13:43,056 INFO L87 Difference]: Start difference. First operand 652 states and 1732 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) [2021-10-06 21:13:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:43,089 INFO L93 Difference]: Finished difference Result 628 states and 1684 transitions. [2021-10-06 21:13:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:13:43,092 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 [2021-10-06 21:13:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:43,099 INFO L225 Difference]: With dead ends: 628 [2021-10-06 21:13:43,099 INFO L226 Difference]: Without dead ends: 628 [2021-10-06 21:13:43,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:13:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-06 21:13:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-10-06 21:13:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 625 states have (on average 2.6944) internal successors, (1684), 627 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1684 transitions. [2021-10-06 21:13:43,128 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1684 transitions. Word has length 3 [2021-10-06 21:13:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:43,129 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1684 transitions. [2021-10-06 21:13:43,129 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) [2021-10-06 21:13:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1684 transitions. [2021-10-06 21:13:43,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:13:43,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:43,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:13:43,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:43,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:43,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash 497043836, now seen corresponding path program 1 times [2021-10-06 21:13:43,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:43,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390269449] [2021-10-06 21:13:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:43,346 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:43,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:43,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:43,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:13:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:43,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:13:43,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:43,431 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 21:13:43,432 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-06 21:13:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:43,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:43,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:43,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390269449] [2021-10-06 21:13:43,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390269449] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:43,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:43,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:13:43,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834806694] [2021-10-06 21:13:43,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:13:43,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:13:43,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:13:43,522 INFO L87 Difference]: Start difference. First operand 628 states and 1684 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:43,577 INFO L93 Difference]: Finished difference Result 484 states and 1252 transitions. [2021-10-06 21:13:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:13:43,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:13:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:43,582 INFO L225 Difference]: With dead ends: 484 [2021-10-06 21:13:43,582 INFO L226 Difference]: Without dead ends: 484 [2021-10-06 21:13:43,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:13:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-06 21:13:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-06 21:13:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 482 states have (on average 2.5975103734439835) internal successors, (1252), 483 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1252 transitions. [2021-10-06 21:13:43,605 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1252 transitions. Word has length 5 [2021-10-06 21:13:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:43,606 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1252 transitions. [2021-10-06 21:13:43,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1252 transitions. [2021-10-06 21:13:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:13:43,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:43,607 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:13:43,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:43,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:43,828 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:43,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:43,830 INFO L82 PathProgramCache]: Analyzing trace with hash 497043838, now seen corresponding path program 1 times [2021-10-06 21:13:43,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:43,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764615823] [2021-10-06 21:13:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:43,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:43,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:43,832 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:43,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:13:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:43,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:13:43,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:43,980 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:13:43,981 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 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:13:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:44,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:44,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:44,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764615823] [2021-10-06 21:13:44,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764615823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:44,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:44,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:13:44,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352346983] [2021-10-06 21:13:44,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:13:44,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:13:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:44,145 INFO L87 Difference]: Start difference. First operand 484 states and 1252 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:44,161 INFO L93 Difference]: Finished difference Result 340 states and 820 transitions. [2021-10-06 21:13:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:13:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:13:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:44,165 INFO L225 Difference]: With dead ends: 340 [2021-10-06 21:13:44,165 INFO L226 Difference]: Without dead ends: 340 [2021-10-06 21:13:44,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:13:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-06 21:13:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-10-06 21:13:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 2.4188790560471976) internal successors, (820), 339 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 820 transitions. [2021-10-06 21:13:44,178 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 820 transitions. Word has length 5 [2021-10-06 21:13:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:44,178 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 820 transitions. [2021-10-06 21:13:44,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 820 transitions. [2021-10-06 21:13:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:44,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:44,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:44,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:44,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:44,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1540683977, now seen corresponding path program 1 times [2021-10-06 21:13:44,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:44,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147201678] [2021-10-06 21:13:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:44,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:44,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:44,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:44,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:13:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:44,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:13:44,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:44,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:44,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:44,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147201678] [2021-10-06 21:13:44,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147201678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:44,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:44,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:13:44,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904135982] [2021-10-06 21:13:44,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:13:44,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:44,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:13:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:13:44,771 INFO L87 Difference]: Start difference. First operand 340 states and 820 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:44,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:44,923 INFO L93 Difference]: Finished difference Result 322 states and 740 transitions. [2021-10-06 21:13:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:13:44,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:44,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:44,926 INFO L225 Difference]: With dead ends: 322 [2021-10-06 21:13:44,926 INFO L226 Difference]: Without dead ends: 322 [2021-10-06 21:13:44,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:13:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-06 21:13:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-06 21:13:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 2.305295950155763) internal successors, (740), 321 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 740 transitions. [2021-10-06 21:13:44,938 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 740 transitions. Word has length 29 [2021-10-06 21:13:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:44,939 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 740 transitions. [2021-10-06 21:13:44,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 740 transitions. [2021-10-06 21:13:44,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:44,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:44,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:44,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:45,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:45,155 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1226004189, now seen corresponding path program 2 times [2021-10-06 21:13:45,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:45,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250579033] [2021-10-06 21:13:45,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:13:45,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:45,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:45,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:45,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:13:45,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:13:45,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:45,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:45,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:45,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:45,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:45,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250579033] [2021-10-06 21:13:45,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250579033] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:45,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:45,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-06 21:13:45,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127114892] [2021-10-06 21:13:45,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:13:45,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:13:45,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:13:45,462 INFO L87 Difference]: Start difference. First operand 322 states and 740 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:45,562 INFO L93 Difference]: Finished difference Result 373 states and 819 transitions. [2021-10-06 21:13:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:13:45,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:45,565 INFO L225 Difference]: With dead ends: 373 [2021-10-06 21:13:45,565 INFO L226 Difference]: Without dead ends: 296 [2021-10-06 21:13:45,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-06 21:13:45,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 264. [2021-10-06 21:13:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.3041825095057034) internal successors, (606), 263 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 606 transitions. [2021-10-06 21:13:45,575 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 606 transitions. Word has length 29 [2021-10-06 21:13:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:45,575 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 606 transitions. [2021-10-06 21:13:45,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 606 transitions. [2021-10-06 21:13:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:45,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:45,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:45,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:45,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:45,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:45,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:45,791 INFO L82 PathProgramCache]: Analyzing trace with hash -891559807, now seen corresponding path program 3 times [2021-10-06 21:13:45,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:45,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474504051] [2021-10-06 21:13:45,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:13:45,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:45,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:45,794 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:45,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:13:45,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:13:45,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:45,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:13:45,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:45,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:46,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:46,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474504051] [2021-10-06 21:13:46,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474504051] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:46,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:46,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-06 21:13:46,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552794718] [2021-10-06 21:13:46,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:13:46,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:13:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:13:46,022 INFO L87 Difference]: Start difference. First operand 264 states and 606 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:46,068 INFO L93 Difference]: Finished difference Result 286 states and 637 transitions. [2021-10-06 21:13:46,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:13:46,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:46,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:46,071 INFO L225 Difference]: With dead ends: 286 [2021-10-06 21:13:46,071 INFO L226 Difference]: Without dead ends: 264 [2021-10-06 21:13:46,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:13:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-06 21:13:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-10-06 21:13:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.2661596958174903) internal successors, (596), 263 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 596 transitions. [2021-10-06 21:13:46,083 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 596 transitions. Word has length 29 [2021-10-06 21:13:46,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:46,111 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 596 transitions. [2021-10-06 21:13:46,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:46,112 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 596 transitions. [2021-10-06 21:13:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:46,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:46,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:46,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:46,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:46,317 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:46,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1204340159, now seen corresponding path program 4 times [2021-10-06 21:13:46,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:46,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833028147] [2021-10-06 21:13:46,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:13:46,319 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:46,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:46,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:46,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:13:46,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:13:46,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:46,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:46,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:46,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:47,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:47,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833028147] [2021-10-06 21:13:47,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833028147] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:47,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:47,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:13:47,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273112194] [2021-10-06 21:13:47,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:13:47,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:47,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:13:47,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:13:47,118 INFO L87 Difference]: Start difference. First operand 264 states and 596 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:48,061 INFO L93 Difference]: Finished difference Result 424 states and 944 transitions. [2021-10-06 21:13:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:13:48,063 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:48,065 INFO L225 Difference]: With dead ends: 424 [2021-10-06 21:13:48,065 INFO L226 Difference]: Without dead ends: 286 [2021-10-06 21:13:48,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 719.2ms TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:13:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-10-06 21:13:48,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 204. [2021-10-06 21:13:48,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.2610837438423643) internal successors, (459), 203 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:48,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 459 transitions. [2021-10-06 21:13:48,074 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 459 transitions. Word has length 29 [2021-10-06 21:13:48,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:48,075 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 459 transitions. [2021-10-06 21:13:48,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 459 transitions. [2021-10-06 21:13:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:48,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:48,077 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:48,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:48,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:48,290 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:48,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:48,291 INFO L82 PathProgramCache]: Analyzing trace with hash -538602483, now seen corresponding path program 5 times [2021-10-06 21:13:48,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:48,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324728019] [2021-10-06 21:13:48,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:13:48,293 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:48,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:48,294 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:48,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:13:48,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:13:48,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:48,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:13:48,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:48,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:48,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:48,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324728019] [2021-10-06 21:13:48,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324728019] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:48,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:48,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-06 21:13:48,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676105477] [2021-10-06 21:13:48,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:13:48,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:13:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:13:48,543 INFO L87 Difference]: Start difference. First operand 204 states and 459 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:48,574 INFO L93 Difference]: Finished difference Result 222 states and 486 transitions. [2021-10-06 21:13:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:13:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:48,577 INFO L225 Difference]: With dead ends: 222 [2021-10-06 21:13:48,577 INFO L226 Difference]: Without dead ends: 204 [2021-10-06 21:13:48,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:13:48,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-06 21:13:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-10-06 21:13:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.2118226600985222) internal successors, (449), 203 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 449 transitions. [2021-10-06 21:13:48,584 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 449 transitions. Word has length 29 [2021-10-06 21:13:48,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:48,584 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 449 transitions. [2021-10-06 21:13:48,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 449 transitions. [2021-10-06 21:13:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:48,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:48,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:48,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:48,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:48,798 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1252162561, now seen corresponding path program 6 times [2021-10-06 21:13:48,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:48,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135809603] [2021-10-06 21:13:48,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:13:48,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:48,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:48,802 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:48,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:13:48,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:13:48,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:48,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:48,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:49,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:49,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:49,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135809603] [2021-10-06 21:13:49,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135809603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:49,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:49,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:13:49,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85935940] [2021-10-06 21:13:49,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:13:49,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:49,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:13:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:13:49,671 INFO L87 Difference]: Start difference. First operand 204 states and 449 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:50,100 INFO L93 Difference]: Finished difference Result 242 states and 506 transitions. [2021-10-06 21:13:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:13:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:50,102 INFO L225 Difference]: With dead ends: 242 [2021-10-06 21:13:50,102 INFO L226 Difference]: Without dead ends: 206 [2021-10-06 21:13:50,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 405.2ms TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:13:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-06 21:13:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 202. [2021-10-06 21:13:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.129353233830846) internal successors, (428), 201 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 428 transitions. [2021-10-06 21:13:50,110 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 428 transitions. Word has length 29 [2021-10-06 21:13:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:50,110 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 428 transitions. [2021-10-06 21:13:50,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 428 transitions. [2021-10-06 21:13:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:50,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:50,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:50,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:50,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:50,325 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:50,327 INFO L82 PathProgramCache]: Analyzing trace with hash -257679379, now seen corresponding path program 7 times [2021-10-06 21:13:50,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:50,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642402369] [2021-10-06 21:13:50,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:13:50,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:50,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:50,329 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:50,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:13:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:50,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:50,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:50,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:51,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:51,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642402369] [2021-10-06 21:13:51,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642402369] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:51,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:51,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:13:51,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398147049] [2021-10-06 21:13:51,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:13:51,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:51,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:13:51,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:51,240 INFO L87 Difference]: Start difference. First operand 202 states and 428 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:51,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:51,730 INFO L93 Difference]: Finished difference Result 290 states and 616 transitions. [2021-10-06 21:13:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:13:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:51,737 INFO L225 Difference]: With dead ends: 290 [2021-10-06 21:13:51,737 INFO L226 Difference]: Without dead ends: 244 [2021-10-06 21:13:51,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 460.4ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:13:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-06 21:13:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 186. [2021-10-06 21:13:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.1243243243243244) internal successors, (393), 185 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 393 transitions. [2021-10-06 21:13:51,745 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 393 transitions. Word has length 29 [2021-10-06 21:13:51,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:51,745 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 393 transitions. [2021-10-06 21:13:51,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 393 transitions. [2021-10-06 21:13:51,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:51,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:51,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:51,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-06 21:13:51,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:51,959 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:51,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:51,960 INFO L82 PathProgramCache]: Analyzing trace with hash -921211735, now seen corresponding path program 8 times [2021-10-06 21:13:51,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:51,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552884405] [2021-10-06 21:13:51,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:13:51,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:51,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:51,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:51,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:13:52,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:13:52,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:52,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:52,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:52,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:52,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:52,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552884405] [2021-10-06 21:13:52,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552884405] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:52,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:52,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:13:52,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401667595] [2021-10-06 21:13:52,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:13:52,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:13:52,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:52,932 INFO L87 Difference]: Start difference. First operand 186 states and 393 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:53,221 INFO L93 Difference]: Finished difference Result 228 states and 472 transitions. [2021-10-06 21:13:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:13:53,222 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:53,223 INFO L225 Difference]: With dead ends: 228 [2021-10-06 21:13:53,223 INFO L226 Difference]: Without dead ends: 180 [2021-10-06 21:13:53,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 401.5ms TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:13:53,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-06 21:13:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-06 21:13:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.11731843575419) internal successors, (379), 179 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 379 transitions. [2021-10-06 21:13:53,230 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 379 transitions. Word has length 29 [2021-10-06 21:13:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:53,230 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 379 transitions. [2021-10-06 21:13:53,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 379 transitions. [2021-10-06 21:13:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:53,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:53,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:53,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:53,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:53,445 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:53,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:53,446 INFO L82 PathProgramCache]: Analyzing trace with hash 254390765, now seen corresponding path program 9 times [2021-10-06 21:13:53,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:53,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981492771] [2021-10-06 21:13:53,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:13:53,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:53,449 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:53,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:13:53,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:13:53,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:53,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:53,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:53,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:54,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:54,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981492771] [2021-10-06 21:13:54,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981492771] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:54,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:54,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:13:54,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782801036] [2021-10-06 21:13:54,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:13:54,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:13:54,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:54,437 INFO L87 Difference]: Start difference. First operand 180 states and 379 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:54,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:54,835 INFO L93 Difference]: Finished difference Result 222 states and 458 transitions. [2021-10-06 21:13:54,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:13:54,836 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:54,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:54,837 INFO L225 Difference]: With dead ends: 222 [2021-10-06 21:13:54,838 INFO L226 Difference]: Without dead ends: 180 [2021-10-06 21:13:54,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 535.0ms TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:13:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-06 21:13:54,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2021-10-06 21:13:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.1085714285714285) internal successors, (369), 175 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 369 transitions. [2021-10-06 21:13:54,844 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 369 transitions. Word has length 29 [2021-10-06 21:13:54,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:54,845 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 369 transitions. [2021-10-06 21:13:54,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:54,845 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 369 transitions. [2021-10-06 21:13:54,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 21:13:54,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:54,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:54,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:55,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:55,060 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:55,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:55,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1877037273, now seen corresponding path program 10 times [2021-10-06 21:13:55,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:55,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937758014] [2021-10-06 21:13:55,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:13:55,063 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:55,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:55,064 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:55,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:13:55,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:13:55,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:55,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:13:55,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:55,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:55,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:55,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937758014] [2021-10-06 21:13:55,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937758014] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:55,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:55,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-06 21:13:55,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948487157] [2021-10-06 21:13:55,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:13:55,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:13:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:13:55,478 INFO L87 Difference]: Start difference. First operand 176 states and 369 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:55,567 INFO L93 Difference]: Finished difference Result 207 states and 416 transitions. [2021-10-06 21:13:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:13:55,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 21:13:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:55,569 INFO L225 Difference]: With dead ends: 207 [2021-10-06 21:13:55,569 INFO L226 Difference]: Without dead ends: 154 [2021-10-06 21:13:55,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-06 21:13:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2021-10-06 21:13:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.0071942446043165) internal successors, (279), 139 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 279 transitions. [2021-10-06 21:13:55,579 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 279 transitions. Word has length 29 [2021-10-06 21:13:55,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:55,579 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 279 transitions. [2021-10-06 21:13:55,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 279 transitions. [2021-10-06 21:13:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:13:55,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:55,581 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:55,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:55,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:55,782 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:13:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:55,783 INFO L82 PathProgramCache]: Analyzing trace with hash 26607181, now seen corresponding path program 1 times [2021-10-06 21:13:55,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:55,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960369790] [2021-10-06 21:13:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:13:55,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:55,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:55,785 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:55,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:13:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:13:55,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:13:55,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:56,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:13:56,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:56,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960369790] [2021-10-06 21:13:56,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960369790] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:56,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:56,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-06 21:13:56,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956633890] [2021-10-06 21:13:56,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:13:56,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:13:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:56,575 INFO L87 Difference]: Start difference. First operand 140 states and 279 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:56,757 INFO L93 Difference]: Finished difference Result 108 states and 217 transitions. [2021-10-06 21:13:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:13:56,758 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-06 21:13:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:56,758 INFO L225 Difference]: With dead ends: 108 [2021-10-06 21:13:56,758 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 21:13:56,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 296.8ms TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:13:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 21:13:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 21:13:56,759 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) [2021-10-06 21:13:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 21:13:56,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-10-06 21:13:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:56,759 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 21:13:56,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 21:13:56,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 21:13:56,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:13:56,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:13:56,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:13:56,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:13:56,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:13:56,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:13:56,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:13:56,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:13:56,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:13:56,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:13:56,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:13:56,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:13:56,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:56,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:56,978 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:13:56,978 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:13:56,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:13:56 BasicIcfg [2021-10-06 21:13:56,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:13:56,985 INFO L168 Benchmark]: Toolchain (without parser) took 26602.05 ms. Allocated memory was 169.9 MB in the beginning and 278.9 MB in the end (delta: 109.1 MB). Free memory was 144.5 MB in the beginning and 179.1 MB in the end (delta: -34.6 MB). Peak memory consumption was 75.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:56,986 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 169.9 MB. Free memory is still 140.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:13:56,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.65 ms. Allocated memory is still 169.9 MB. Free memory was 144.2 MB in the beginning and 133.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:56,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.73 ms. Allocated memory is still 169.9 MB. Free memory was 133.0 MB in the beginning and 131.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:56,987 INFO L168 Benchmark]: Boogie Preprocessor took 52.57 ms. Allocated memory is still 169.9 MB. Free memory was 131.3 MB in the beginning and 130.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:56,988 INFO L168 Benchmark]: RCFGBuilder took 610.68 ms. Allocated memory is still 169.9 MB. Free memory was 129.9 MB in the beginning and 151.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:56,988 INFO L168 Benchmark]: TraceAbstraction took 25439.39 ms. Allocated memory was 169.9 MB in the beginning and 278.9 MB in the end (delta: 109.1 MB). Free memory was 151.0 MB in the beginning and 179.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 81.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:56,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 169.9 MB. Free memory is still 140.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 425.65 ms. Allocated memory is still 169.9 MB. Free memory was 144.2 MB in the beginning and 133.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.73 ms. Allocated memory is still 169.9 MB. Free memory was 133.0 MB in the beginning and 131.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.57 ms. Allocated memory is still 169.9 MB. Free memory was 131.3 MB in the beginning and 130.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 610.68 ms. Allocated memory is still 169.9 MB. Free memory was 129.9 MB in the beginning and 151.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25439.39 ms. Allocated memory was 169.9 MB in the beginning and 278.9 MB in the end (delta: 109.1 MB). Free memory was 151.0 MB in the beginning and 179.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 81.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9747.4ms, 137 PlacesBefore, 50 PlacesAfterwards, 138 TransitionsBefore, 47 TransitionsAfterwards, 2856 CoEnabledTransitionPairs, 8 FixpointIterations, 67 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 135 TotalNumberOfCompositions, 11019 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5334, positive: 4963, positive conditional: 0, positive unconditional: 4963, negative: 371, negative conditional: 0, negative unconditional: 371, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2209, positive: 2123, positive conditional: 0, positive unconditional: 2123, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2209, positive: 2089, positive conditional: 0, positive unconditional: 2089, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 120, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 320, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 298, negative conditional: 0, negative unconditional: 298, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5334, positive: 2840, positive conditional: 0, positive unconditional: 2840, negative: 285, negative conditional: 0, negative unconditional: 285, unknown: 2209, unknown conditional: 0, unknown unconditional: 2209] , Statistics on independence cache: Total cache size (in pairs): 374, Positive cache size: 331, Positive conditional cache size: 0, Positive unconditional cache size: 331, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43 - 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: 88]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 88]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 89]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 89]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 90]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 90]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 91]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 91]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 73]: 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 5 procedures, 185 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 25199.0ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 33.8ms, AutomataDifference: 3481.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9846.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 668 SDtfs, 705 SDslu, 2396 SDs, 0 SdLazy, 1399 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1701.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 688 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 3102.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=679occurred in iteration=0, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 309.5ms AutomataMinimizationTime, 16 MinimizatonAttempts, 194 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 141.9ms SsaConstructionTime, 527.3ms SatisfiabilityAnalysisTime, 6248.1ms InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 3329 SizeOfPredicates, 116 NumberOfNonLiveVariables, 1128 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 21:13:57,027 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...