/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/chl/match-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:00:58,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:00:58,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:00:58,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:00:58,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:00:58,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:00:58,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:00:58,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:00:58,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:00:58,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:00:58,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:00:58,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:00:58,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:00:58,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:00:58,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:00:58,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:00:58,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:00:58,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:00:58,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:00:58,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:00:58,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:00:58,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:00:58,405 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:00:58,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:00:58,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:00:58,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:00:58,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:00:58,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:00:58,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:00:58,408 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:00:58,408 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:00:58,408 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:00:58,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:00:58,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:00:58,409 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:00:58,409 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:00:58,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:00:58,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:00:58,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:00:58,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:00:58,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:00:58,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:00:58,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:00:58,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:00:58,413 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:00:58,413 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:00:58,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:00:58,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:00:58,414 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:00:58,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:00:58,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:00:58,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:00:58,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:00:58,884 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:00:58,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/match-symm.wvr.c [2021-10-06 21:00:58,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/932dc9135/e4202dd9edc7493287a877c3d1ed07d6/FLAGf4f313c9d [2021-10-06 21:00:59,506 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:00:59,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/match-symm.wvr.c [2021-10-06 21:00:59,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/932dc9135/e4202dd9edc7493287a877c3d1ed07d6/FLAGf4f313c9d [2021-10-06 21:00:59,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/932dc9135/e4202dd9edc7493287a877c3d1ed07d6 [2021-10-06 21:00:59,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:00:59,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:00:59,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:00:59,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:00:59,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:00:59,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:00:59" (1/1) ... [2021-10-06 21:00:59,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb3ae81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:00:59, skipping insertion in model container [2021-10-06 21:00:59,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:00:59" (1/1) ... [2021-10-06 21:00:59,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:00:59,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:01:00,132 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/chl/match-symm.wvr.c[2540,2553] [2021-10-06 21:01:00,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:00,160 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:01:00,211 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/match-symm.wvr.c[2540,2553] [2021-10-06 21:01:00,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:00,237 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:01:00,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00 WrapperNode [2021-10-06 21:01:00,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:00,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:00,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:01:00,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:01:00,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:00,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:01:00,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:01:00,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:01:00,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:01:00,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:01:00,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:01:00,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:01:00,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (1/1) ... [2021-10-06 21:01:00,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:00,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:01:00,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:01:00,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:01:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:01:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:01:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:01:00,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:01:00,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:01:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:01:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:01:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:01:00,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:01:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:01:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:01:00,478 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:01:00,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:01:00,907 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 21:01:00,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:00 BoogieIcfgContainer [2021-10-06 21:01:00,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:01:00,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:01:00,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:01:00,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:01:00,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:00:59" (1/3) ... [2021-10-06 21:01:00,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc30f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:00, skipping insertion in model container [2021-10-06 21:01:00,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:00" (2/3) ... [2021-10-06 21:01:00,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc30f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:00, skipping insertion in model container [2021-10-06 21:01:00,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:00" (3/3) ... [2021-10-06 21:01:00,918 INFO L111 eAbstractionObserver]: Analyzing ICFG match-symm.wvr.c [2021-10-06 21:01:00,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:01:00,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:01:00,924 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:01:00,989 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,989 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,990 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,990 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,990 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,991 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,992 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,992 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,992 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,992 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,994 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,994 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,994 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,994 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,995 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,995 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,995 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,995 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,996 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,996 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,996 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,996 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,996 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,996 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,997 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,997 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,998 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,998 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,998 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,998 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:00,999 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,003 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,003 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,012 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,013 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,022 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:01,027 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:01:01,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:01:01,087 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:01:01,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:01:01,105 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:01:01,117 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 131 transitions, 278 flow [2021-10-06 21:01:01,120 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 131 transitions, 278 flow [2021-10-06 21:01:01,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 131 transitions, 278 flow [2021-10-06 21:01:01,182 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2021-10-06 21:01:01,183 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:01:01,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 11/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 182 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-10-06 21:01:01,193 INFO L116 LiptonReduction]: Number of co-enabled transitions 1980 [2021-10-06 21:01:15,336 INFO L131 LiptonReduction]: Checked pairs total: 2388 [2021-10-06 21:01:15,336 INFO L133 LiptonReduction]: Total number of compositions: 174 [2021-10-06 21:01:15,348 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 62 flow [2021-10-06 21:01:15,364 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:15,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:01:15,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:15,372 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:01:15,372 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 554, now seen corresponding path program 1 times [2021-10-06 21:01:15,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:15,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569900931] [2021-10-06 21:01:15,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:15,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:15,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:15,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:15,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:01:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:15,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:01:15,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:15,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:15,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:15,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569900931] [2021-10-06 21:01:15,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569900931] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:15,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:15,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:01:15,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078509849] [2021-10-06 21:01:15,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:01:15,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:01:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:01:15,537 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:15,548 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2021-10-06 21:01:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:01:15,550 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 21:01:15,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:15,558 INFO L225 Difference]: With dead ends: 36 [2021-10-06 21:01:15,559 INFO L226 Difference]: Without dead ends: 36 [2021-10-06 21:01:15,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:01:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-06 21:01:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-06 21:01:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-10-06 21:01:15,590 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 1 [2021-10-06 21:01:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:15,591 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-10-06 21:01:15,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2021-10-06 21:01:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:01:15,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:15,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:01:15,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:15,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:15,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:15,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash 545612, now seen corresponding path program 1 times [2021-10-06 21:01:15,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:15,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339239837] [2021-10-06 21:01:15,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:15,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:15,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:15,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:15,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:01:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:15,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:01:15,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:16,067 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:01:16,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:01:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:16,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:16,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:16,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339239837] [2021-10-06 21:01:16,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339239837] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:16,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:16,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:01:16,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087674878] [2021-10-06 21:01:16,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:01:16,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:16,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:01:16,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:16,467 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:16,495 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-10-06 21:01:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:16,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:01:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:16,497 INFO L225 Difference]: With dead ends: 32 [2021-10-06 21:01:16,497 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 21:01:16,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 21:01:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 21:01:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2021-10-06 21:01:16,503 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 3 [2021-10-06 21:01:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:16,504 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2021-10-06 21:01:16,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2021-10-06 21:01:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:01:16,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:16,505 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:01:16,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:16,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:16,720 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 545613, now seen corresponding path program 1 times [2021-10-06 21:01:16,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:16,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22457416] [2021-10-06 21:01:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:16,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:16,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:16,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:16,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:01:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:16,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:01:16,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:16,864 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:01:16,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:01:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:16,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:17,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:17,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22457416] [2021-10-06 21:01:17,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22457416] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:17,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:17,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:17,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089353332] [2021-10-06 21:01:17,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:17,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:17,011 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:17,034 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2021-10-06 21:01:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:17,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:01:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:17,038 INFO L225 Difference]: With dead ends: 28 [2021-10-06 21:01:17,039 INFO L226 Difference]: Without dead ends: 28 [2021-10-06 21:01:17,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-06 21:01:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-06 21:01:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 44 transitions. [2021-10-06 21:01:17,046 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 44 transitions. Word has length 3 [2021-10-06 21:01:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:17,049 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 44 transitions. [2021-10-06 21:01:17,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2021-10-06 21:01:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:01:17,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:17,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:01:17,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:17,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:17,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:17,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:17,254 INFO L82 PathProgramCache]: Analyzing trace with hash 524343484, now seen corresponding path program 1 times [2021-10-06 21:01:17,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:17,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665080422] [2021-10-06 21:01:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:17,255 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:17,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:17,256 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:17,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:01:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:17,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:01:17,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:17,429 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:01:17,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:01:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:17,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:17,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:17,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665080422] [2021-10-06 21:01:17,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665080422] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:17,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:17,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:01:17,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531869514] [2021-10-06 21:01:17,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:01:17,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:01:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:17,716 INFO L87 Difference]: Start difference. First operand 28 states and 44 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:17,741 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2021-10-06 21:01:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:01:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:17,743 INFO L225 Difference]: With dead ends: 24 [2021-10-06 21:01:17,743 INFO L226 Difference]: Without dead ends: 24 [2021-10-06 21:01:17,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-06 21:01:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-06 21:01:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2021-10-06 21:01:17,748 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 36 transitions. Word has length 5 [2021-10-06 21:01:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:17,749 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-06 21:01:17,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 36 transitions. [2021-10-06 21:01:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:01:17,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:17,750 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:01:17,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:17,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:17,962 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:17,964 INFO L82 PathProgramCache]: Analyzing trace with hash 524343485, now seen corresponding path program 1 times [2021-10-06 21:01:17,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:17,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082275644] [2021-10-06 21:01:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:17,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:17,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:17,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:17,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:01:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:18,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:01:18,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:18,096 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-06 21:01:18,096 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 35 treesize of output 51 [2021-10-06 21:01:18,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 350 treesize of output 334 [2021-10-06 21:01:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:18,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:18,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:18,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082275644] [2021-10-06 21:01:18,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082275644] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:18,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:18,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:18,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677419006] [2021-10-06 21:01:18,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:18,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:18,445 INFO L87 Difference]: Start difference. First operand 24 states and 36 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:18,460 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2021-10-06 21:01:18,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:18,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:01:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:18,462 INFO L225 Difference]: With dead ends: 20 [2021-10-06 21:01:18,462 INFO L226 Difference]: Without dead ends: 20 [2021-10-06 21:01:18,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-06 21:01:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-06 21:01:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-10-06 21:01:18,465 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 5 [2021-10-06 21:01:18,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:18,466 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-10-06 21:01:18,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2021-10-06 21:01:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:01:18,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:18,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:18,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:18,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:18,678 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:18,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1666796795, now seen corresponding path program 1 times [2021-10-06 21:01:18,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:18,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686491307] [2021-10-06 21:01:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:18,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:18,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:18,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:18,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:01:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:18,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:01:18,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:21,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:23,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:23,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686491307] [2021-10-06 21:01:23,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686491307] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:23,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:23,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:01:23,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536436069] [2021-10-06 21:01:23,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:01:23,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:01:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:01:23,729 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:24,051 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-06 21:01:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:01:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 11 [2021-10-06 21:01:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:24,053 INFO L225 Difference]: With dead ends: 25 [2021-10-06 21:01:24,053 INFO L226 Difference]: Without dead ends: 14 [2021-10-06 21:01:24,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 815.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:01:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-06 21:01:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-06 21:01:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-06 21:01:24,057 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-06 21:01:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:24,058 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-06 21:01:24,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-06 21:01:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:01:24,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:24,059 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:24,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-06 21:01:24,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:24,260 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:01:24,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:24,261 INFO L82 PathProgramCache]: Analyzing trace with hash -724954463, now seen corresponding path program 2 times [2021-10-06 21:01:24,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:24,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898502752] [2021-10-06 21:01:24,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:24,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:24,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:24,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:24,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:01:24,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:01:24,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:24,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:01:24,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:25,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:26,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:26,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898502752] [2021-10-06 21:01:26,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898502752] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:26,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:26,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:01:26,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777736846] [2021-10-06 21:01:26,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:01:26,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:26,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:01:26,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:01:26,284 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:26,555 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-06 21:01:26,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:01:26,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 11 [2021-10-06 21:01:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:26,555 INFO L225 Difference]: With dead ends: 13 [2021-10-06 21:01:26,556 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 21:01:26,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 775.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:01:26,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 21:01:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 21:01:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 21:01:26,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-06 21:01:26,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:26,557 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 21:01:26,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 21:01:26,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 21:01:26,560 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:01:26,561 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:01:26,561 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:01:26,561 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:01:26,561 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:01:26,561 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:01:26,561 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:01:26,562 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:01:26,562 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:01:26,562 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:01:26,562 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:01:26,562 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:01:26,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:26,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:26,769 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:01:26,769 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:01:26,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:01:26 BasicIcfg [2021-10-06 21:01:26,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:01:26,772 INFO L168 Benchmark]: Toolchain (without parser) took 26864.29 ms. Allocated memory was 180.4 MB in the beginning and 218.1 MB in the end (delta: 37.7 MB). Free memory was 155.1 MB in the beginning and 123.7 MB in the end (delta: 31.4 MB). Peak memory consumption was 69.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:01:26,772 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 180.4 MB. Free memory is still 150.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:01:26,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.53 ms. Allocated memory is still 180.4 MB. Free memory was 154.8 MB in the beginning and 143.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:01:26,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.77 ms. Allocated memory is still 180.4 MB. Free memory was 143.8 MB in the beginning and 142.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:01:26,774 INFO L168 Benchmark]: Boogie Preprocessor took 60.00 ms. Allocated memory is still 180.4 MB. Free memory was 142.2 MB in the beginning and 140.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:01:26,774 INFO L168 Benchmark]: RCFGBuilder took 536.81 ms. Allocated memory is still 180.4 MB. Free memory was 140.8 MB in the beginning and 127.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:01:26,775 INFO L168 Benchmark]: TraceAbstraction took 25859.82 ms. Allocated memory was 180.4 MB in the beginning and 218.1 MB in the end (delta: 37.7 MB). Free memory was 126.8 MB in the beginning and 123.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 41.3 MB. Max. memory is 8.0 GB. [2021-10-06 21:01:26,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 180.4 MB. Free memory is still 150.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.53 ms. Allocated memory is still 180.4 MB. Free memory was 154.8 MB in the beginning and 143.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 64.77 ms. Allocated memory is still 180.4 MB. Free memory was 143.8 MB in the beginning and 142.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.00 ms. Allocated memory is still 180.4 MB. Free memory was 142.2 MB in the beginning and 140.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 536.81 ms. Allocated memory is still 180.4 MB. Free memory was 140.8 MB in the beginning and 127.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25859.82 ms. Allocated memory was 180.4 MB in the beginning and 218.1 MB in the end (delta: 37.7 MB). Free memory was 126.8 MB in the beginning and 123.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 41.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14216.4ms, 127 PlacesBefore, 30 PlacesAfterwards, 131 TransitionsBefore, 23 TransitionsAfterwards, 1980 CoEnabledTransitionPairs, 7 FixpointIterations, 75 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 32 ConcurrentYvCompositions, 11 ChoiceCompositions, 174 TotalNumberOfCompositions, 2388 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2388, positive: 2388, positive conditional: 0, positive unconditional: 2388, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1656, positive: 1656, positive conditional: 0, positive unconditional: 1656, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1656, positive: 1656, positive conditional: 0, positive unconditional: 1656, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2388, positive: 732, positive conditional: 0, positive unconditional: 732, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1656, unknown conditional: 0, unknown unconditional: 1656] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 59]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 59]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 60]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 60]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 61]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 61]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 48]: 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, 161 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 25693.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 756.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14276.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 78 SDtfs, 67 SDslu, 25 SDs, 0 SdLazy, 32 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 189.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1675.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.5ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.2ms SsaConstructionTime, 146.0ms SatisfiabilityAnalysisTime, 8585.1ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 4 QuantifiedInterpolants, 1597 SizeOfPredicates, 36 NumberOfNonLiveVariables, 261 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 21:01:26,825 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...