/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/simpleReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 03:38:28,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 03:38:28,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 03:38:28,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 03:38:28,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 03:38:28,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 03:38:28,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 03:38:28,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 03:38:28,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 03:38:28,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 03:38:28,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 03:38:28,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 03:38:28,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 03:38:28,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 03:38:28,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 03:38:28,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 03:38:28,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 03:38:28,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 03:38:28,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 03:38:28,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 03:38:28,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 03:38:28,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 03:38:28,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 03:38:28,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 03:38:28,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-29 03:38:28,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-29 03:38:28,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-29 03:38:28,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-29 03:38:28,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-29 03:38:28,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-29 03:38:28,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 03:38:28,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 03:38:28,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 03:38:28,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 03:38:28,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 03:38:28,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 03:38:28,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 03:38:28,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 03:38:28,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 03:38:28,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 03:38:28,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 03:38:28,517 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 03:38:28,543 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 03:38:28,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 03:38:28,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 03:38:28,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 03:38:28,545 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 03:38:28,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 03:38:28,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 03:38:28,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 03:38:28,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 03:38:28,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 03:38:28,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 03:38:28,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 03:38:28,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 03:38:28,547 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 03:38:28,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 03:38:28,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 03:38:28,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 03:38:28,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 03:38:28,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 03:38:28,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 03:38:28,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 03:38:28,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:38:28,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 03:38:28,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 03:38:28,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 03:38:28,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 03:38:28,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 03:38:28,550 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 03:38:28,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 03:38:28,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 03:38:28,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 03:38:28,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 03:38:28,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 03:38:28,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 03:38:28,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 03:38:28,982 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 03:38:28,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-04-29 03:38:29,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9581836a/1d681599a6e0476c9749ac128a2f1a84/FLAGfb318f497 [2021-04-29 03:38:29,597 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 03:38:29,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-04-29 03:38:29,598 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-29 03:38:29,598 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-29 03:38:29,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9581836a/1d681599a6e0476c9749ac128a2f1a84/FLAGfb318f497 [2021-04-29 03:38:29,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9581836a/1d681599a6e0476c9749ac128a2f1a84 [2021-04-29 03:38:29,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 03:38:30,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 03:38:30,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 03:38:30,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 03:38:30,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 03:38:30,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 03:38:29" (1/1) ... [2021-04-29 03:38:30,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6c904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30, skipping insertion in model container [2021-04-29 03:38:30,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 03:38:29" (1/1) ... [2021-04-29 03:38:30,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 03:38:30,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 03:38:30,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 03:38:30,317 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 03:38:30,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 03:38:30,351 INFO L208 MainTranslator]: Completed translation [2021-04-29 03:38:30,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30 WrapperNode [2021-04-29 03:38:30,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 03:38:30,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 03:38:30,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 03:38:30,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 03:38:30,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 03:38:30,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 03:38:30,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 03:38:30,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 03:38:30,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (1/1) ... [2021-04-29 03:38:30,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 03:38:30,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 03:38:30,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 03:38:30,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 03:38:30,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (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 03:38:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-04-29 03:38:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 03:38:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-04-29 03:38:30,515 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-04-29 03:38:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 03:38:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 03:38:30,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 03:38:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-29 03:38:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-04-29 03:38:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 03:38:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 03:38:30,520 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 03:38:30,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 03:38:30,807 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-29 03:38:30,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:38:30 BoogieIcfgContainer [2021-04-29 03:38:30,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 03:38:30,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 03:38:30,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 03:38:30,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 03:38:30,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 03:38:29" (1/3) ... [2021-04-29 03:38:30,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1330de61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:38:30, skipping insertion in model container [2021-04-29 03:38:30,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 03:38:30" (2/3) ... [2021-04-29 03:38:30,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1330de61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:38:30, skipping insertion in model container [2021-04-29 03:38:30,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:38:30" (3/3) ... [2021-04-29 03:38:30,819 INFO L111 eAbstractionObserver]: Analyzing ICFG simpleReturn.c [2021-04-29 03:38:30,826 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 03:38:30,832 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 03:38:30,833 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 03:38:30,867 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,867 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,868 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,868 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,868 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,869 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,869 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,869 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,869 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,870 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,870 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,870 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,870 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,870 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,871 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,871 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,871 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,871 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,871 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,872 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,872 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,872 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,872 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,872 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,873 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,874 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,874 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,874 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,875 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,875 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,875 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,876 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,876 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,876 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,876 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,877 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,877 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,877 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,880 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,880 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,880 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,880 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,880 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,881 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,881 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 03:38:30,890 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-04-29 03:38:30,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-29 03:38:30,987 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 03:38:30,987 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 03:38:30,987 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 03:38:30,988 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 03:38:30,988 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 03:38:30,988 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 03:38:30,988 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 03:38:30,988 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 03:38:31,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 92 flow [2021-04-29 03:38:31,039 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-04-29 03:38:31,039 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:38:31,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 0/41 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. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 03:38:31,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 92 flow [2021-04-29 03:38:31,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 68 flow [2021-04-29 03:38:31,050 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:38:31,065 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 31 transitions, 68 flow [2021-04-29 03:38:31,070 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 31 transitions, 68 flow [2021-04-29 03:38:31,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 68 flow [2021-04-29 03:38:31,090 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-04-29 03:38:31,090 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:38:31,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 31 events. 0/31 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 03:38:31,093 INFO L146 LiptonReduction]: Number of co-enabled transitions 42 [2021-04-29 03:38:33,123 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 03:38:33,289 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-29 03:38:33,979 INFO L158 LiptonReduction]: Checked pairs total: 57 [2021-04-29 03:38:33,979 INFO L160 LiptonReduction]: Total number of compositions: 49 [2021-04-29 03:38:33,982 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2934 [2021-04-29 03:38:33,996 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-04-29 03:38:33,996 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 03:38:33,996 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:38:33,997 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-29 03:38:33,997 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:38:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:38:34,004 INFO L82 PathProgramCache]: Analyzing trace with hash 546181821, now seen corresponding path program 1 times [2021-04-29 03:38:34,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:38:34,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165780229] [2021-04-29 03:38:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:38:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:38:34,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 03:38:34,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 03:38:34,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 03:38:34,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:34,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:34,352 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 03:38:34,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165780229] [2021-04-29 03:38:34,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:38:34,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:38:34,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743523141] [2021-04-29 03:38:34,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 03:38:34,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:38:34,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 03:38:34,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-29 03:38:34,383 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2021-04-29 03:38:34,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 03:38:34,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:38:34,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2021-04-29 03:38:34,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:38:34,643 INFO L129 PetriNetUnfolder]: 10/76 cut-off events. [2021-04-29 03:38:34,644 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 03:38:34,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 76 events. 10/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 369 event pairs, 6 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 75. Up to 31 conditions per place. [2021-04-29 03:38:34,647 INFO L132 encePairwiseOnDemand]: 71/91 looper letters, 2 selfloop transitions, 4 changer transitions 46/52 dead transitions. [2021-04-29 03:38:34,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 213 flow [2021-04-29 03:38:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 03:38:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 03:38:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2021-04-29 03:38:34,663 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28885400313971743 [2021-04-29 03:38:34,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 184 transitions. [2021-04-29 03:38:34,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 184 transitions. [2021-04-29 03:38:34,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:38:34,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 184 transitions. [2021-04-29 03:38:34,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 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 03:38:34,677 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 03:38:34,678 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 03:38:34,680 INFO L185 Difference]: Start difference. First operand has 39 places, 35 transitions, 76 flow. Second operand 7 states and 184 transitions. [2021-04-29 03:38:34,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 213 flow [2021-04-29 03:38:34,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 03:38:34,686 INFO L241 Difference]: Finished difference. Result has 45 places, 6 transitions, 28 flow [2021-04-29 03:38:34,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28, PETRI_PLACES=45, PETRI_TRANSITIONS=6} [2021-04-29 03:38:34,689 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2021-04-29 03:38:34,689 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:38:34,689 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 6 transitions, 28 flow [2021-04-29 03:38:34,690 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 6 transitions, 28 flow [2021-04-29 03:38:34,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 6 transitions, 28 flow [2021-04-29 03:38:34,693 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-04-29 03:38:34,693 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 03:38:34,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 0/7 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 03:38:34,693 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 03:38:34,694 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:38:34,694 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:38:34,694 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-04-29 03:38:34,696 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 6 transitions, 28 flow [2021-04-29 03:38:34,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 03:38:34,696 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:38:34,697 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-04-29 03:38:34,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 03:38:34,697 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 03:38:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:38:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash 545922351, now seen corresponding path program 2 times [2021-04-29 03:38:34,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:38:34,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930202809] [2021-04-29 03:38:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:38:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:38:34,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 03:38:34,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 03:38:34,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:34,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:34,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:38:34,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 03:38:34,827 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 03:38:34,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930202809] [2021-04-29 03:38:34,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:38:34,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 03:38:34,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427516473] [2021-04-29 03:38:34,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 03:38:34,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:38:34,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 03:38:34,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-29 03:38:34,832 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2021-04-29 03:38:34,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 6 transitions, 28 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 03:38:34,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:38:34,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2021-04-29 03:38:34,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:38:34,897 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-04-29 03:38:34,898 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 03:38:34,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 6 events. 0/6 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 03:38:34,898 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2021-04-29 03:38:34,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 6 transitions, 40 flow [2021-04-29 03:38:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 03:38:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 03:38:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2021-04-29 03:38:34,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.23076923076923078 [2021-04-29 03:38:34,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 147 transitions. [2021-04-29 03:38:34,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 147 transitions. [2021-04-29 03:38:34,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:38:34,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 147 transitions. [2021-04-29 03:38:34,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 03:38:34,906 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 03:38:34,906 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 03:38:34,906 INFO L185 Difference]: Start difference. First operand has 14 places, 6 transitions, 28 flow. Second operand 7 states and 147 transitions. [2021-04-29 03:38:34,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 6 transitions, 40 flow [2021-04-29 03:38:34,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 6 transitions, 32 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-04-29 03:38:34,907 INFO L241 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-04-29 03:38:34,908 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, 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=15, PETRI_TRANSITIONS=0} [2021-04-29 03:38:34,908 INFO L343 CegarLoopForPetriNet]: 39 programPoint places, -24 predicate places. [2021-04-29 03:38:34,908 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:38:34,909 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 0 transitions, 0 flow [2021-04-29 03:38:34,909 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 0 transitions, 0 flow [2021-04-29 03:38:34,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 03:38:34,910 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 03:38:34,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:38:34,910 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 03:38:34,910 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 03:38:34,910 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:38:34,910 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:38:34,911 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-04-29 03:38:34,912 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 03:38:34,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 03:38:34,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 03:38:34,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 03:38:34 BasicIcfg [2021-04-29 03:38:34,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 03:38:34,919 INFO L168 Benchmark]: Toolchain (without parser) took 4926.93 ms. Allocated memory was 323.0 MB in the beginning and 406.8 MB in the end (delta: 83.9 MB). Free memory was 295.9 MB in the beginning and 239.5 MB in the end (delta: 56.4 MB). Peak memory consumption was 143.5 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:34,919 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 323.0 MB. Free memory is still 291.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:38:34,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.85 ms. Allocated memory is still 323.0 MB. Free memory was 292.8 MB in the beginning and 284.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:34,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.48 ms. Allocated memory is still 323.0 MB. Free memory was 284.1 MB in the beginning and 282.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:34,921 INFO L168 Benchmark]: Boogie Preprocessor took 22.74 ms. Allocated memory is still 323.0 MB. Free memory was 282.6 MB in the beginning and 281.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 03:38:34,922 INFO L168 Benchmark]: RCFGBuilder took 386.10 ms. Allocated memory is still 323.0 MB. Free memory was 281.6 MB in the beginning and 294.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:34,923 INFO L168 Benchmark]: TraceAbstraction took 4105.68 ms. Allocated memory was 323.0 MB in the beginning and 406.8 MB in the end (delta: 83.9 MB). Free memory was 294.8 MB in the beginning and 239.5 MB in the end (delta: 55.3 MB). Peak memory consumption was 142.3 MB. Max. memory is 16.0 GB. [2021-04-29 03:38:34,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 323.0 MB. Free memory is still 291.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 310.85 ms. Allocated memory is still 323.0 MB. Free memory was 292.8 MB in the beginning and 284.1 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 45.48 ms. Allocated memory is still 323.0 MB. Free memory was 284.1 MB in the beginning and 282.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.74 ms. Allocated memory is still 323.0 MB. Free memory was 282.6 MB in the beginning and 281.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 386.10 ms. Allocated memory is still 323.0 MB. Free memory was 281.6 MB in the beginning and 294.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4105.68 ms. Allocated memory was 323.0 MB in the beginning and 406.8 MB in the end (delta: 83.9 MB). Free memory was 294.8 MB in the beginning and 239.5 MB in the end (delta: 55.3 MB). Peak memory consumption was 142.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2909.3ms, 35 PlacesBefore, 39 PlacesAfterwards, 31 TransitionsBefore, 35 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 57 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 51, positive conditional: 51, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 38, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 38, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 38, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 54, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 38, unknown conditional: 38, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 37, Positive conditional cache size: 37, Positive unconditional cache size: 0, Negative cache size: 1, Negative conditional cache size: 1, 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): 38, Positive cache size: 37, Positive conditional cache size: 37, Positive unconditional cache size: 0, Negative cache size: 1, Negative conditional cache size: 1, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3ms, 15 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): 38, Positive cache size: 37, Positive conditional cache size: 37, Positive unconditional cache size: 0, Negative cache size: 1, Negative conditional cache size: 1, Negative unconditional cache size: 0 - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3935.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 391.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3000.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 11 SDslu, 6 SDs, 0 SdLazy, 219 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 168.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 139.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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: 9.4ms SsaConstructionTime, 77.7ms SatisfiabilityAnalysisTime, 298.6ms 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...