/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/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 18:14:06,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 18:14:06,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 18:14:06,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 18:14:06,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 18:14:06,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 18:14:06,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 18:14:06,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 18:14:06,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 18:14:06,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 18:14:06,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 18:14:06,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 18:14:06,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 18:14:06,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 18:14:06,291 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 18:14:06,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 18:14:06,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 18:14:06,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 18:14:06,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 18:14:06,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 18:14:06,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 18:14:06,294 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 18:14:06,294 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 18:14:06,294 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 18:14:06,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 18:14:06,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 18:14:06,294 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 18:14:06,295 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 18:14:06,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 18:14:06,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 18:14:06,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 18:14:06,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 18:14:06,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 18:14:06,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:14:06,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 18:14:06,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 18:14:06,296 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 18:14:06,297 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 18:14:06,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 18:14:06,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 18:14:06,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 18:14:06,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 18:14:06,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 18:14:06,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 18:14:06,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 18:14:06,730 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 18:14:06,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-08 18:14:06,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d5c44b5/f181cbb8f1904d148c4727ff92bdf064/FLAGce71482ce [2021-10-08 18:14:07,593 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 18:14:07,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-08 18:14:07,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d5c44b5/f181cbb8f1904d148c4727ff92bdf064/FLAGce71482ce [2021-10-08 18:14:07,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d5c44b5/f181cbb8f1904d148c4727ff92bdf064 [2021-10-08 18:14:07,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 18:14:07,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 18:14:07,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 18:14:07,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 18:14:07,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 18:14:07,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:14:07" (1/1) ... [2021-10-08 18:14:07,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5e73d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:07, skipping insertion in model container [2021-10-08 18:14:07,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:14:07" (1/1) ... [2021-10-08 18:14:07,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 18:14:07,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:14:08,160 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/test-easy6.wvr.c[2033,2046] [2021-10-08 18:14:08,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:14:08,181 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 18:14:08,208 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/test-easy6.wvr.c[2033,2046] [2021-10-08 18:14:08,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:14:08,230 INFO L208 MainTranslator]: Completed translation [2021-10-08 18:14:08,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08 WrapperNode [2021-10-08 18:14:08,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 18:14:08,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 18:14:08,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 18:14:08,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 18:14:08,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 18:14:08,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 18:14:08,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 18:14:08,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 18:14:08,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 18:14:08,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 18:14:08,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 18:14:08,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 18:14:08,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (1/1) ... [2021-10-08 18:14:08,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:14:08,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:14:08,356 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) [2021-10-08 18:14:08,381 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 [2021-10-08 18:14:08,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 18:14:08,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 18:14:08,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 18:14:08,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 18:14:08,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 18:14:08,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 18:14:08,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 18:14:08,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 18:14:08,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 18:14:08,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 18:14:08,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 18:14:08,434 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 18:14:08,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 18:14:08,850 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-08 18:14:08,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:14:08 BoogieIcfgContainer [2021-10-08 18:14:08,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 18:14:08,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 18:14:08,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 18:14:08,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 18:14:08,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 06:14:07" (1/3) ... [2021-10-08 18:14:08,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab576fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:14:08, skipping insertion in model container [2021-10-08 18:14:08,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:08" (2/3) ... [2021-10-08 18:14:08,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab576fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:14:08, skipping insertion in model container [2021-10-08 18:14:08,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:14:08" (3/3) ... [2021-10-08 18:14:08,863 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2021-10-08 18:14:08,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 18:14:08,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 18:14:08,870 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 18:14:08,995 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:08,996 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:08,996 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:08,997 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:08,997 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,001 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,002 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,003 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,004 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,004 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,012 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,013 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,014 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,014 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,014 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,014 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,015 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,015 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,015 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,015 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,016 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,016 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,016 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,018 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,018 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,019 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,019 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,019 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,019 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,020 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,020 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,020 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,020 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,021 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,021 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,022 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,022 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,022 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,022 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,023 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,023 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,023 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,023 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,024 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,024 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,024 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,025 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,025 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,025 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,029 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,029 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,030 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,030 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,035 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,035 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,036 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,036 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:09,042 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 18:14:09,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 18:14:09,110 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 [2021-10-08 18:14:09,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-08 18:14:09,129 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 18:14:09,147 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 109 transitions, 234 flow [2021-10-08 18:14:09,150 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 109 transitions, 234 flow [2021-10-08 18:14:09,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 109 transitions, 234 flow [2021-10-08 18:14:09,263 INFO L129 PetriNetUnfolder]: 5/107 cut-off events. [2021-10-08 18:14:09,264 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 18:14:09,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 107 events. 5/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2021-10-08 18:14:09,278 INFO L116 LiptonReduction]: Number of co-enabled transitions 1848 [2021-10-08 18:14:16,079 INFO L131 LiptonReduction]: Checked pairs total: 8495 [2021-10-08 18:14:16,080 INFO L133 LiptonReduction]: Total number of compositions: 111 [2021-10-08 18:14:16,096 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 42 transitions, 100 flow [2021-10-08 18:14:16,145 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 487 states, 477 states have (on average 2.748427672955975) internal successors, (1311), 486 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 477 states have (on average 2.748427672955975) internal successors, (1311), 486 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 18:14:16,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:16,158 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 18:14:16,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash 415, now seen corresponding path program 1 times [2021-10-08 18:14:16,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:16,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910428216] [2021-10-08 18:14:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:16,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:16,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:16,181 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) [2021-10-08 18:14:16,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 18:14:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:16,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 18:14:16,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:16,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:16,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:16,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910428216] [2021-10-08 18:14:16,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910428216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:16,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:16,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 18:14:16,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703098186] [2021-10-08 18:14:16,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 18:14:16,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:16,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 18:14:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:14:16,273 INFO L87 Difference]: Start difference. First operand has 487 states, 477 states have (on average 2.748427672955975) internal successors, (1311), 486 states have internal predecessors, (1311), 0 states have call successors, (0), 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) [2021-10-08 18:14:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:16,312 INFO L93 Difference]: Finished difference Result 484 states and 1176 transitions. [2021-10-08 18:14:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 18:14:16,314 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 [2021-10-08 18:14:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:16,333 INFO L225 Difference]: With dead ends: 484 [2021-10-08 18:14:16,334 INFO L226 Difference]: Without dead ends: 484 [2021-10-08 18:14:16,335 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 [2021-10-08 18:14:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-08 18:14:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-08 18:14:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 477 states have (on average 2.4654088050314464) internal successors, (1176), 483 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1176 transitions. [2021-10-08 18:14:16,432 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1176 transitions. Word has length 1 [2021-10-08 18:14:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:16,433 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1176 transitions. [2021-10-08 18:14:16,433 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) [2021-10-08 18:14:16,433 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1176 transitions. [2021-10-08 18:14:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:14:16,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:16,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:14:16,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:16,645 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 [2021-10-08 18:14:16,646 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 408788, now seen corresponding path program 1 times [2021-10-08 18:14:16,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:16,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659585295] [2021-10-08 18:14:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:16,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:16,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:16,652 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) [2021-10-08 18:14:16,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 18:14:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:16,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:14:16,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:17,060 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 18:14:17,061 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 [2021-10-08 18:14:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:17,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:17,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:17,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659585295] [2021-10-08 18:14:17,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659585295] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:17,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:17,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:14:17,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102266701] [2021-10-08 18:14:17,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:14:17,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:14:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:14:17,222 INFO L87 Difference]: Start difference. First operand 484 states and 1176 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) [2021-10-08 18:14:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:17,264 INFO L93 Difference]: Finished difference Result 464 states and 1138 transitions. [2021-10-08 18:14:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:14:17,265 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 [2021-10-08 18:14:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:17,269 INFO L225 Difference]: With dead ends: 464 [2021-10-08 18:14:17,270 INFO L226 Difference]: Without dead ends: 464 [2021-10-08 18:14:17,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:14:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-08 18:14:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-10-08 18:14:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 459 states have (on average 2.479302832244009) internal successors, (1138), 463 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1138 transitions. [2021-10-08 18:14:17,300 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1138 transitions. Word has length 3 [2021-10-08 18:14:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:17,301 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1138 transitions. [2021-10-08 18:14:17,301 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) [2021-10-08 18:14:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1138 transitions. [2021-10-08 18:14:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:14:17,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:17,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:14:17,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:17,515 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 [2021-10-08 18:14:17,516 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:17,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:17,517 INFO L82 PathProgramCache]: Analyzing trace with hash 408790, now seen corresponding path program 1 times [2021-10-08 18:14:17,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:17,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801608401] [2021-10-08 18:14:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:17,524 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:17,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:17,526 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) [2021-10-08 18:14:17,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 18:14:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:17,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:14:17,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:17,616 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 18:14:17,617 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 [2021-10-08 18:14:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:17,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:17,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:17,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801608401] [2021-10-08 18:14:17,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801608401] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:17,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:17,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:14:17,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44735427] [2021-10-08 18:14:17,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:14:17,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:14:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:17,666 INFO L87 Difference]: Start difference. First operand 464 states and 1138 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) [2021-10-08 18:14:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:17,692 INFO L93 Difference]: Finished difference Result 444 states and 1100 transitions. [2021-10-08 18:14:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:14:17,693 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 [2021-10-08 18:14:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:17,697 INFO L225 Difference]: With dead ends: 444 [2021-10-08 18:14:17,697 INFO L226 Difference]: Without dead ends: 444 [2021-10-08 18:14:17,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-08 18:14:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-10-08 18:14:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 441 states have (on average 2.494331065759637) internal successors, (1100), 443 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1100 transitions. [2021-10-08 18:14:17,718 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1100 transitions. Word has length 3 [2021-10-08 18:14:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:17,723 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1100 transitions. [2021-10-08 18:14:17,730 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) [2021-10-08 18:14:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1100 transitions. [2021-10-08 18:14:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:14:17,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:17,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:14:17,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:17,947 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 [2021-10-08 18:14:17,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:17,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:17,949 INFO L82 PathProgramCache]: Analyzing trace with hash 392855293, now seen corresponding path program 1 times [2021-10-08 18:14:17,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:17,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754378879] [2021-10-08 18:14:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:17,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:17,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:17,952 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) [2021-10-08 18:14:17,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 18:14:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:18,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:14:18,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:18,029 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 18:14:18,029 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 [2021-10-08 18:14:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:18,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:18,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:18,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754378879] [2021-10-08 18:14:18,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754378879] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:18,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:18,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:14:18,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703643070] [2021-10-08 18:14:18,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:14:18,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:18,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:14:18,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:18,080 INFO L87 Difference]: Start difference. First operand 444 states and 1100 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) [2021-10-08 18:14:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:18,106 INFO L93 Difference]: Finished difference Result 344 states and 820 transitions. [2021-10-08 18:14:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:14:18,107 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 [2021-10-08 18:14:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:18,110 INFO L225 Difference]: With dead ends: 344 [2021-10-08 18:14:18,111 INFO L226 Difference]: Without dead ends: 344 [2021-10-08 18:14:18,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-08 18:14:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-10-08 18:14:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 342 states have (on average 2.3976608187134505) internal successors, (820), 343 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) [2021-10-08 18:14:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 820 transitions. [2021-10-08 18:14:18,126 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 820 transitions. Word has length 5 [2021-10-08 18:14:18,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:18,127 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 820 transitions. [2021-10-08 18:14:18,127 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) [2021-10-08 18:14:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 820 transitions. [2021-10-08 18:14:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:14:18,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:18,128 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:14:18,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:18,341 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 [2021-10-08 18:14:18,341 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:18,342 INFO L82 PathProgramCache]: Analyzing trace with hash 392855291, now seen corresponding path program 1 times [2021-10-08 18:14:18,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:18,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80839790] [2021-10-08 18:14:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:18,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:18,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:18,345 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) [2021-10-08 18:14:18,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 18:14:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:18,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:14:18,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:18,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:18,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:18,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80839790] [2021-10-08 18:14:18,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80839790] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:18,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:18,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:14:18,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010113409] [2021-10-08 18:14:18,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:14:18,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:14:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:18,551 INFO L87 Difference]: Start difference. First operand 344 states and 820 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) [2021-10-08 18:14:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:18,571 INFO L93 Difference]: Finished difference Result 244 states and 540 transitions. [2021-10-08 18:14:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:14:18,572 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 [2021-10-08 18:14:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:18,574 INFO L225 Difference]: With dead ends: 244 [2021-10-08 18:14:18,574 INFO L226 Difference]: Without dead ends: 244 [2021-10-08 18:14:18,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-08 18:14:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-10-08 18:14:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.2222222222222223) internal successors, (540), 243 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 540 transitions. [2021-10-08 18:14:18,585 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 540 transitions. Word has length 5 [2021-10-08 18:14:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:18,585 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 540 transitions. [2021-10-08 18:14:18,585 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) [2021-10-08 18:14:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 540 transitions. [2021-10-08 18:14:18,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:14:18,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:18,589 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:18,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:18,800 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 [2021-10-08 18:14:18,801 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)] === [2021-10-08 18:14:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 49457164, now seen corresponding path program 1 times [2021-10-08 18:14:18,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:18,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815177241] [2021-10-08 18:14:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:18,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:18,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:18,804 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) [2021-10-08 18:14:18,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 18:14:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:18,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:14:18,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:19,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:19,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:19,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815177241] [2021-10-08 18:14:19,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815177241] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:19,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:19,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-08 18:14:19,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555576357] [2021-10-08 18:14:19,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 18:14:19,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:19,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 18:14:19,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:14:19,123 INFO L87 Difference]: Start difference. First operand 244 states and 540 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:19,241 INFO L93 Difference]: Finished difference Result 295 states and 619 transitions. [2021-10-08 18:14:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:14:19,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 18:14:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:19,244 INFO L225 Difference]: With dead ends: 295 [2021-10-08 18:14:19,245 INFO L226 Difference]: Without dead ends: 250 [2021-10-08 18:14:19,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:14:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-08 18:14:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 216. [2021-10-08 18:14:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.186046511627907) internal successors, (470), 215 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 470 transitions. [2021-10-08 18:14:19,254 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 470 transitions. Word has length 27 [2021-10-08 18:14:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:19,255 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 470 transitions. [2021-10-08 18:14:19,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 470 transitions. [2021-10-08 18:14:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:14:19,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:19,257 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:19,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:19,471 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 [2021-10-08 18:14:19,471 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)] === [2021-10-08 18:14:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:19,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1866303702, now seen corresponding path program 2 times [2021-10-08 18:14:19,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:19,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901703437] [2021-10-08 18:14:19,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:19,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:19,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:19,475 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) [2021-10-08 18:14:19,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 18:14:19,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:14:19,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:19,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:14:19,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:19,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:20,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:20,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901703437] [2021-10-08 18:14:20,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901703437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:20,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:20,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-08 18:14:20,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632077391] [2021-10-08 18:14:20,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:14:20,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:14:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:20,319 INFO L87 Difference]: Start difference. First operand 216 states and 470 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:20,665 INFO L93 Difference]: Finished difference Result 380 states and 817 transitions. [2021-10-08 18:14:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:14:20,666 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 18:14:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:20,668 INFO L225 Difference]: With dead ends: 380 [2021-10-08 18:14:20,669 INFO L226 Difference]: Without dead ends: 310 [2021-10-08 18:14:20,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 375.8ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:14:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-08 18:14:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 196. [2021-10-08 18:14:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.1538461538461537) internal successors, (420), 195 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 420 transitions. [2021-10-08 18:14:20,678 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 420 transitions. Word has length 27 [2021-10-08 18:14:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:20,678 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 420 transitions. [2021-10-08 18:14:20,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 420 transitions. [2021-10-08 18:14:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:14:20,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:20,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:20,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:20,894 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 [2021-10-08 18:14:20,895 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)] === [2021-10-08 18:14:20,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash 495941324, now seen corresponding path program 3 times [2021-10-08 18:14:20,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:20,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608790623] [2021-10-08 18:14:20,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:20,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:20,899 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) [2021-10-08 18:14:20,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 18:14:20,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 18:14:20,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:20,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:14:20,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:21,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:21,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:21,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608790623] [2021-10-08 18:14:21,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608790623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:21,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:21,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-08 18:14:21,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347595007] [2021-10-08 18:14:21,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:14:21,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:21,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:14:21,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 18:14:21,121 INFO L87 Difference]: Start difference. First operand 196 states and 420 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:21,158 INFO L93 Difference]: Finished difference Result 202 states and 418 transitions. [2021-10-08 18:14:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:14:21,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 18:14:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:21,160 INFO L225 Difference]: With dead ends: 202 [2021-10-08 18:14:21,160 INFO L226 Difference]: Without dead ends: 184 [2021-10-08 18:14:21,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:14:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-08 18:14:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-10-08 18:14:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.1311475409836067) internal successors, (390), 183 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 390 transitions. [2021-10-08 18:14:21,167 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 390 transitions. Word has length 27 [2021-10-08 18:14:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:21,168 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 390 transitions. [2021-10-08 18:14:21,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 390 transitions. [2021-10-08 18:14:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:14:21,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:21,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:21,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:21,386 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 [2021-10-08 18:14:21,387 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)] === [2021-10-08 18:14:21,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:21,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1887832210, now seen corresponding path program 4 times [2021-10-08 18:14:21,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:21,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038528194] [2021-10-08 18:14:21,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:14:21,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:21,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:21,391 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) [2021-10-08 18:14:21,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 18:14:21,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:14:21,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:21,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:14:21,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:21,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:22,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:22,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038528194] [2021-10-08 18:14:22,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038528194] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:22,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:22,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-08 18:14:22,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359651469] [2021-10-08 18:14:22,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:14:22,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:14:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:22,043 INFO L87 Difference]: Start difference. First operand 184 states and 390 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:22,472 INFO L93 Difference]: Finished difference Result 346 states and 723 transitions. [2021-10-08 18:14:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:14:22,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 18:14:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:22,476 INFO L225 Difference]: With dead ends: 346 [2021-10-08 18:14:22,476 INFO L226 Difference]: Without dead ends: 332 [2021-10-08 18:14:22,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 495.3ms TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:14:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-08 18:14:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 218. [2021-10-08 18:14:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.133640552995392) internal successors, (463), 217 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 463 transitions. [2021-10-08 18:14:22,488 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 463 transitions. Word has length 27 [2021-10-08 18:14:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:22,488 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 463 transitions. [2021-10-08 18:14:22,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 463 transitions. [2021-10-08 18:14:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:14:22,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:22,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:22,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:22,702 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 [2021-10-08 18:14:22,703 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)] === [2021-10-08 18:14:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:22,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1578849530, now seen corresponding path program 5 times [2021-10-08 18:14:22,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:22,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996288359] [2021-10-08 18:14:22,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:14:22,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:22,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:22,707 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) [2021-10-08 18:14:22,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 18:14:22,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:14:22,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:22,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:14:22,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:22,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:23,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:23,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996288359] [2021-10-08 18:14:23,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996288359] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:23,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:23,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-08 18:14:23,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954677697] [2021-10-08 18:14:23,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 18:14:23,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:23,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 18:14:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:14:23,047 INFO L87 Difference]: Start difference. First operand 218 states and 463 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:23,144 INFO L93 Difference]: Finished difference Result 251 states and 514 transitions. [2021-10-08 18:14:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:14:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 18:14:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:23,146 INFO L225 Difference]: With dead ends: 251 [2021-10-08 18:14:23,147 INFO L226 Difference]: Without dead ends: 148 [2021-10-08 18:14:23,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:14:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-08 18:14:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 134. [2021-10-08 18:14:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.0601503759398496) internal successors, (274), 133 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 274 transitions. [2021-10-08 18:14:23,152 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 274 transitions. Word has length 27 [2021-10-08 18:14:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:23,153 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 274 transitions. [2021-10-08 18:14:23,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 274 transitions. [2021-10-08 18:14:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 18:14:23,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:23,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:23,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:23,370 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 [2021-10-08 18:14:23,371 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)] === [2021-10-08 18:14:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2124308980, now seen corresponding path program 6 times [2021-10-08 18:14:23,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:23,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524585521] [2021-10-08 18:14:23,372 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:14:23,372 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:23,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:23,373 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) [2021-10-08 18:14:23,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 18:14:23,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-08 18:14:23,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:23,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:14:23,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:23,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:24,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:24,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524585521] [2021-10-08 18:14:24,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524585521] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:24,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:24,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-08 18:14:24,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859712449] [2021-10-08 18:14:24,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:14:24,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:14:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:24,020 INFO L87 Difference]: Start difference. First operand 134 states and 274 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:24,428 INFO L93 Difference]: Finished difference Result 148 states and 307 transitions. [2021-10-08 18:14:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:14:24,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 18:14:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:24,430 INFO L225 Difference]: With dead ends: 148 [2021-10-08 18:14:24,430 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 18:14:24,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 469.4ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:14:24,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 18:14:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 18:14:24,432 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) [2021-10-08 18:14:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 18:14:24,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-08 18:14:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:24,432 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 18:14:24,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 18:14:24,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 18:14:24,436 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:14:24,436 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:14:24,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:14:24,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:14:24,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:14:24,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:14:24,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:14:24,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:14:24,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:14:24,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:14:24,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:14:24,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:14:24,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:24,639 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 [2021-10-08 18:14:24,645 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:14:24,645 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:14:24,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:14:24 BasicIcfg [2021-10-08 18:14:24,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:14:24,658 INFO L168 Benchmark]: Toolchain (without parser) took 16710.69 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 138.5 MB in the beginning and 109.7 MB in the end (delta: 28.9 MB). Peak memory consumption was 68.4 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:24,658 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:14:24,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.25 ms. Allocated memory is still 163.6 MB. Free memory was 138.2 MB in the beginning and 127.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:24,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 163.6 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:24,660 INFO L168 Benchmark]: Boogie Preprocessor took 31.68 ms. Allocated memory is still 163.6 MB. Free memory was 125.4 MB in the beginning and 124.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:24,661 INFO L168 Benchmark]: RCFGBuilder took 538.78 ms. Allocated memory is still 163.6 MB. Free memory was 124.1 MB in the beginning and 111.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:24,661 INFO L168 Benchmark]: TraceAbstraction took 15795.34 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 110.9 MB in the beginning and 109.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:14:24,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.25 ms. Allocated memory is still 163.6 MB. Free memory was 138.2 MB in the beginning and 127.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 163.6 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.68 ms. Allocated memory is still 163.6 MB. Free memory was 125.4 MB in the beginning and 124.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 538.78 ms. Allocated memory is still 163.6 MB. Free memory was 124.1 MB in the beginning and 111.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15795.34 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 110.9 MB in the beginning and 109.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6929.9ms, 111 PlacesBefore, 46 PlacesAfterwards, 109 TransitionsBefore, 42 TransitionsAfterwards, 1848 CoEnabledTransitionPairs, 10 FixpointIterations, 49 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 111 TotalNumberOfCompositions, 8495 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4339, positive: 4019, positive conditional: 0, positive unconditional: 4019, negative: 320, negative conditional: 0, negative unconditional: 320, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1607, positive: 1549, positive conditional: 0, positive unconditional: 1549, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1607, positive: 1512, positive conditional: 0, positive unconditional: 1512, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 95, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 212, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 167, negative conditional: 0, negative unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4339, positive: 2470, positive conditional: 0, positive unconditional: 2470, negative: 262, negative conditional: 0, negative unconditional: 262, unknown: 1607, unknown conditional: 0, unknown unconditional: 1607] , Statistics on independence cache: Total cache size (in pairs): 293, Positive cache size: 267, Positive conditional cache size: 0, Positive unconditional cache size: 267, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26 - 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: 74]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 74]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 75]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 75]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 76]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 76]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 77]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 77]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 80]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 70]: 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, 147 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 15546.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 23.7ms, AutomataDifference: 1683.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7035.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 368 SDtfs, 770 SDslu, 861 SDs, 0 SdLazy, 334 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 641.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1551.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=0, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 193.7ms AutomataMinimizationTime, 11 MinimizatonAttempts, 276 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 109.4ms SsaConstructionTime, 328.2ms SatisfiabilityAnalysisTime, 3224.1ms InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 1558 SizeOfPredicates, 40 NumberOfNonLiveVariables, 729 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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! [2021-10-08 18:14:24,715 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...