/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 03:38:03,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 03:38:03,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 03:38:03,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 03:38:03,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 03:38:03,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 03:38:03,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 03:38:03,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 03:38:03,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 03:38:03,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 03:38:03,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 03:38:03,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 03:38:03,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 03:38:03,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 03:38:03,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 03:38:03,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 03:38:03,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 03:38:03,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 03:38:03,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 03:38:03,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 03:38:03,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 03:38:03,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 03:38:03,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 03:38:03,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 03:38:03,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-29 03:38:03,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-29 03:38:03,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-29 03:38:03,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-29 03:38:03,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-29 03:38:03,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-29 03:38:03,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 03:38:03,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 03:38:03,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 03:38:03,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 03:38:03,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 03:38:03,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 03:38:03,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 03:38:03,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 03:38:03,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 03:38:03,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 03:38:03,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 03:38:03,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 03:38:03,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 03:38:03,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 03:38:03,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 03:38:03,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 03:38:03,995 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 03:38:03,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 03:38:03,996 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 03:38:03,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 03:38:03,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 03:38:03,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 03:38:03,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 03:38:03,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 03:38:03,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 03:38:03,998 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 03:38:03,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 03:38:03,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 03:38:03,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 03:38:03,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 03:38:04,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 03:38:04,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 03:38:04,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 03:38:04,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:38:04,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 03:38:04,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 03:38:04,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 03:38:04,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 03:38:04,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 03:38:04,001 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 03:38:04,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 03:38:04,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 03:38:04,002 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 03:38:04,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 03:38:04,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 03:38:04,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 03:38:04,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 03:38:04,428 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 03:38:04,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-04-29 03:38:04,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3aee6953/53157f24e74e4f688882f06a0fb7ec30/FLAGe08e2103e [2021-04-29 03:38:05,053 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 03:38:05,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-04-29 03:38:05,054 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-29 03:38:05,054 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-29 03:38:05,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3aee6953/53157f24e74e4f688882f06a0fb7ec30/FLAGe08e2103e [2021-04-29 03:38:05,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3aee6953/53157f24e74e4f688882f06a0fb7ec30 [2021-04-29 03:38:05,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 03:38:05,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 03:38:05,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 03:38:05,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 03:38:05,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 03:38:05,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e84923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05, skipping insertion in model container [2021-04-29 03:38:05,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 03:38:05,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 03:38:05,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 03:38:05,783 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 03:38:05,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 03:38:05,834 INFO L208 MainTranslator]: Completed translation [2021-04-29 03:38:05,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05 WrapperNode [2021-04-29 03:38:05,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 03:38:05,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 03:38:05,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 03:38:05,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 03:38:05,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 03:38:05,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 03:38:05,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 03:38:05,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 03:38:05,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... [2021-04-29 03:38:05,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 03:38:05,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 03:38:05,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 03:38:05,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 03:38:05,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:38:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-04-29 03:38:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 03:38:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-04-29 03:38:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-04-29 03:38:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 03:38:06,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 03:38:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 03:38:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-29 03:38:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-04-29 03:38:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 03:38:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 03:38:06,051 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 03:38:06,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 03:38:06,430 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-29 03:38:06,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:38:06 BoogieIcfgContainer [2021-04-29 03:38:06,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 03:38:06,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 03:38:06,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 03:38:06,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 03:38:06,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 03:38:05" (1/3) ... [2021-04-29 03:38:06,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e444170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:38:06, skipping insertion in model container [2021-04-29 03:38:06,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:05" (2/3) ... [2021-04-29 03:38:06,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e444170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:38:06, skipping insertion in model container [2021-04-29 03:38:06,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:38:06" (3/3) ... [2021-04-29 03:38:06,455 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitSafe.c [2021-04-29 03:38:06,466 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 03:38:06,477 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 03:38:06,478 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 03:38:06,522 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,523 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,523 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,523 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,524 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,524 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,524 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,524 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,526 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,527 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,527 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,528 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,529 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,529 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,529 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,529 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,530 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,530 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,530 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,531 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,531 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,531 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,532 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,532 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,532 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,533 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,533 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,534 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,534 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,534 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,535 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,535 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,535 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,535 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,536 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,537 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,538 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,538 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,538 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,538 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,539 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,539 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,540 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,540 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,543 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,544 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,544 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,544 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,545 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,545 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,545 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,545 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:06,561 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-04-29 03:38:06,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-29 03:38:06,623 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 03:38:06,623 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 03:38:06,623 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 03:38:06,623 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 03:38:06,623 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 03:38:06,624 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 03:38:06,624 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 03:38:06,624 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 03:38:06,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 94 flow [2021-04-29 03:38:06,700 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-04-29 03:38:06,700 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:38:06,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 42 events. 0/42 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 03:38:06,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 94 flow [2021-04-29 03:38:06,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 70 flow [2021-04-29 03:38:06,717 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:38:06,732 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 32 transitions, 70 flow [2021-04-29 03:38:06,736 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 32 transitions, 70 flow [2021-04-29 03:38:06,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 70 flow [2021-04-29 03:38:06,756 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-04-29 03:38:06,757 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:38:06,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 32 events. 0/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 03:38:06,759 INFO L146 LiptonReduction]: Number of co-enabled transitions 54 [2021-04-29 03:38:09,553 INFO L158 LiptonReduction]: Checked pairs total: 69 [2021-04-29 03:38:09,554 INFO L160 LiptonReduction]: Total number of compositions: 48 [2021-04-29 03:38:09,557 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2842 [2021-04-29 03:38:09,573 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-04-29 03:38:09,574 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:38:09,574 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:38:09,575 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-29 03:38:09,575 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:38:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:38:09,581 INFO L82 PathProgramCache]: Analyzing trace with hash 807594126, now seen corresponding path program 1 times [2021-04-29 03:38:09,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:38:09,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141158518] [2021-04-29 03:38:09,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:38:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:38:09,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:09,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 03:38:09,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:09,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 03:38:09,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:09,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:09,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:09,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:09,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:09,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:38:09,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141158518] [2021-04-29 03:38:09,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:38:09,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:38:09,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422691624] [2021-04-29 03:38:09,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 03:38:09,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:38:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 03:38:09,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-29 03:38:09,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2021-04-29 03:38:09,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:09,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:38:09,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2021-04-29 03:38:09,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:38:10,178 INFO L129 PetriNetUnfolder]: 14/79 cut-off events. [2021-04-29 03:38:10,178 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 03:38:10,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 79 events. 14/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 392 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 95. Up to 40 conditions per place. [2021-04-29 03:38:10,182 INFO L132 encePairwiseOnDemand]: 72/91 looper letters, 3 selfloop transitions, 3 changer transitions 48/54 dead transitions. [2021-04-29 03:38:10,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 221 flow [2021-04-29 03:38:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 03:38:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 03:38:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2021-04-29 03:38:10,199 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3453689167974882 [2021-04-29 03:38:10,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 220 transitions. [2021-04-29 03:38:10,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 220 transitions. [2021-04-29 03:38:10,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:38:10,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 220 transitions. [2021-04-29 03:38:10,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,215 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,218 INFO L185 Difference]: Start difference. First operand has 38 places, 34 transitions, 74 flow. Second operand 7 states and 220 transitions. [2021-04-29 03:38:10,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 221 flow [2021-04-29 03:38:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:38:10,224 INFO L241 Difference]: Finished difference. Result has 45 places, 6 transitions, 28 flow [2021-04-29 03:38:10,226 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28, PETRI_PLACES=45, PETRI_TRANSITIONS=6} [2021-04-29 03:38:10,227 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2021-04-29 03:38:10,227 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:38:10,227 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 6 transitions, 28 flow [2021-04-29 03:38:10,228 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 6 transitions, 28 flow [2021-04-29 03:38:10,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 6 transitions, 28 flow [2021-04-29 03:38:10,231 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-04-29 03:38:10,231 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:38:10,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 6 events. 0/6 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 03:38:10,231 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 03:38:10,232 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:38:10,232 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:38:10,232 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-04-29 03:38:10,234 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 6 transitions, 28 flow [2021-04-29 03:38:10,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,234 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:38:10,235 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-29 03:38:10,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 03:38:10,235 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:38:10,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:38:10,236 INFO L82 PathProgramCache]: Analyzing trace with hash 808084236, now seen corresponding path program 2 times [2021-04-29 03:38:10,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:38:10,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121318014] [2021-04-29 03:38:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:38:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:38:10,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:10,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 03:38:10,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:10,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 03:38:10,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:10,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 03:38:10,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:10,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:10,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:10,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:38:10,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121318014] [2021-04-29 03:38:10,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:38:10,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:38:10,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347799621] [2021-04-29 03:38:10,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 03:38:10,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:38:10,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 03:38:10,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-29 03:38:10,340 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2021-04-29 03:38:10,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 6 transitions, 28 flow. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:38:10,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2021-04-29 03:38:10,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:38:10,402 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-04-29 03:38:10,402 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:38:10,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 5 events. 0/5 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 03:38:10,403 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-04-29 03:38:10,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 5 transitions, 34 flow [2021-04-29 03:38:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 03:38:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 03:38:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2021-04-29 03:38:10,405 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2731554160125589 [2021-04-29 03:38:10,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 174 transitions. [2021-04-29 03:38:10,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 174 transitions. [2021-04-29 03:38:10,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:38:10,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 174 transitions. [2021-04-29 03:38:10,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,411 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,411 INFO L185 Difference]: Start difference. First operand has 14 places, 6 transitions, 28 flow. Second operand 7 states and 174 transitions. [2021-04-29 03:38:10,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 5 transitions, 34 flow [2021-04-29 03:38:10,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 5 transitions, 24 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-04-29 03:38:10,412 INFO L241 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2021-04-29 03:38:10,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2021-04-29 03:38:10,413 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, -24 predicate places. [2021-04-29 03:38:10,413 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:38:10,413 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 0 transitions, 0 flow [2021-04-29 03:38:10,414 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 0 transitions, 0 flow [2021-04-29 03:38:10,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 03:38:10,414 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 03:38:10,414 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:38:10,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 03:38:10,415 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 03:38:10,415 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:38:10,415 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:38:10,415 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 03:38:10,416 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 03:38:10,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:38:10,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 03:38:10,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 03:38:10 BasicIcfg [2021-04-29 03:38:10,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 03:38:10,423 INFO L168 Benchmark]: Toolchain (without parser) took 4982.01 ms. Allocated memory was 333.4 MB in the beginning and 427.8 MB in the end (delta: 94.4 MB). Free memory was 306.4 MB in the beginning and 208.3 MB in the end (delta: 98.1 MB). Peak memory consumption was 193.8 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:10,424 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 333.4 MB. Free memory was 301.9 MB in the beginning and 301.8 MB in the end (delta: 79.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:38:10,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.78 ms. Allocated memory is still 333.4 MB. Free memory was 303.2 MB in the beginning and 294.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:10,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.36 ms. Allocated memory is still 333.4 MB. Free memory was 294.4 MB in the beginning and 293.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:10,426 INFO L168 Benchmark]: Boogie Preprocessor took 48.29 ms. Allocated memory is still 333.4 MB. Free memory was 293.0 MB in the beginning and 292.0 MB in the end (delta: 984.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:38:10,427 INFO L168 Benchmark]: RCFGBuilder took 493.48 ms. Allocated memory is still 333.4 MB. Free memory was 292.0 MB in the beginning and 307.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:10,427 INFO L168 Benchmark]: TraceAbstraction took 3984.75 ms. Allocated memory was 333.4 MB in the beginning and 427.8 MB in the end (delta: 94.4 MB). Free memory was 306.8 MB in the beginning and 208.3 MB in the end (delta: 98.5 MB). Peak memory consumption was 192.9 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:10,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 333.4 MB. Free memory was 301.9 MB in the beginning and 301.8 MB in the end (delta: 79.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 345.78 ms. Allocated memory is still 333.4 MB. Free memory was 303.2 MB in the beginning and 294.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.36 ms. Allocated memory is still 333.4 MB. Free memory was 294.4 MB in the beginning and 293.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 48.29 ms. Allocated memory is still 333.4 MB. Free memory was 293.0 MB in the beginning and 292.0 MB in the end (delta: 984.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 493.48 ms. Allocated memory is still 333.4 MB. Free memory was 292.0 MB in the beginning and 307.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3984.75 ms. Allocated memory was 333.4 MB in the beginning and 427.8 MB in the end (delta: 94.4 MB). Free memory was 306.8 MB in the beginning and 208.3 MB in the end (delta: 98.5 MB). Peak memory consumption was 192.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2817.6ms, 36 PlacesBefore, 38 PlacesAfterwards, 32 TransitionsBefore, 34 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 69 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 63, positive: 59, positive conditional: 59, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 45, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 45, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 45, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 21, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 63, positive: 16, positive conditional: 16, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 45, unknown conditional: 45, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 43, Positive conditional cache size: 43, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5ms, 45 PlacesBefore, 14 PlacesAfterwards, 6 TransitionsBefore, 6 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 43, Positive conditional cache size: 43, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4ms, 14 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 43, Positive conditional cache size: 43, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3801.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 414.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2939.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 17 SDslu, 12 SDs, 0 SdLazy, 212 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 179.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.1ms SsaConstructionTime, 69.6ms SatisfiabilityAnalysisTime, 213.7ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...