/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:27:09,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:27:09,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:27:09,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:27:09,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:27:09,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:27:09,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:27:09,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:27:09,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:27:09,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:27:09,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:27:09,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:27:09,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:27:09,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:27:09,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:27:09,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:27:09,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:27:09,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:27:09,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:27:09,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:27:09,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:27:09,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:27:09,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:27:09,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:27:09,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 22:27:09,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 22:27:09,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 22:27:09,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 22:27:09,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 22:27:09,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 22:27:09,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 22:27:09,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 22:27:09,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 22:27:09,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:27:09,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:27:09,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:27:09,395 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-SemanticLbe.epf [2021-03-11 22:27:09,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:27:09,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:27:09,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:27:09,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:27:09,418 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:27:09,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:27:09,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:27:09,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:27:09,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:27:09,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:27:09,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:27:09,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:27:09,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:27:09,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:27:09,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:27:09,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:27:09,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:27:09,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:27:09,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:27:09,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:27:09,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:27:09,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:27:09,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:27:09,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 22:27:09,688 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 22:27:09,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2021-03-11 22:27:09,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c04d65d/4dd1c587d5b44ad39177e1888454fc77/FLAGf09dbca0f [2021-03-11 22:27:10,142 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 22:27:10,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2021-03-11 22:27:10,144 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:27:10,144 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:27:10,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c04d65d/4dd1c587d5b44ad39177e1888454fc77/FLAGf09dbca0f [2021-03-11 22:27:10,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c04d65d/4dd1c587d5b44ad39177e1888454fc77 [2021-03-11 22:27:10,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:27:10,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 22:27:10,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 22:27:10,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 22:27:10,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 22:27:10,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db51c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10, skipping insertion in model container [2021-03-11 22:27:10,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 22:27:10,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 22:27:10,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:27:10,364 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 22:27:10,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:27:10,387 INFO L208 MainTranslator]: Completed translation [2021-03-11 22:27:10,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10 WrapperNode [2021-03-11 22:27:10,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 22:27:10,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:27:10,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:27:10,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:27:10,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:27:10,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:27:10,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:27:10,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:27:10,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (1/1) ... [2021-03-11 22:27:10,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:27:10,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:27:10,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:27:10,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:27:10,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (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 [2021-03-11 22:27:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 22:27:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-11 22:27:10,503 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-11 22:27:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:27:10,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:27:10,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 22:27:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 22:27:10,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 22:27:10,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 22:27:10,506 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 22:27:10,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:27:10,701 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 22:27:10,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:27:10 BoogieIcfgContainer [2021-03-11 22:27:10,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:27:10,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:27:10,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:27:10,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:27:10,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 10:27:10" (1/3) ... [2021-03-11 22:27:10,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51db1b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:27:10, skipping insertion in model container [2021-03-11 22:27:10,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:10" (2/3) ... [2021-03-11 22:27:10,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51db1b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:27:10, skipping insertion in model container [2021-03-11 22:27:10,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:27:10" (3/3) ... [2021-03-11 22:27:10,720 INFO L111 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2021-03-11 22:27:10,724 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:27:10,726 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 22:27:10,726 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:27:10,746 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,746 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,746 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,746 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,747 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,747 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,747 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,747 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,747 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,747 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,747 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,747 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,748 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,748 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,748 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,748 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,748 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,748 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,749 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,750 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,750 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,750 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,750 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,750 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,750 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,750 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,750 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,751 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,752 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,752 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,752 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,752 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,752 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,752 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,753 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,753 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,753 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,753 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,753 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,753 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,753 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,753 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,754 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,755 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,755 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,755 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,755 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,755 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,755 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,755 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,755 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,756 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,757 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,757 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,757 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,758 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,758 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,759 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,759 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,759 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,759 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,759 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,762 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,762 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,762 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,763 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,763 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,763 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,763 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,764 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,765 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,765 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,765 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,765 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,765 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,765 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:10,774 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-11 22:27:10,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 22:27:10,800 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:27:10,800 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:27:10,800 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:27:10,800 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:27:10,800 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:27:10,800 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:27:10,800 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:27:10,800 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:27:10,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2021-03-11 22:27:10,836 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2021-03-11 22:27:10,836 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-11 22:27:10,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2021-03-11 22:27:10,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 77 transitions, 196 flow [2021-03-11 22:27:10,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 61 transitions, 158 flow [2021-03-11 22:27:10,850 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:27:10,856 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 61 transitions, 158 flow [2021-03-11 22:27:10,860 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 61 transitions, 158 flow [2021-03-11 22:27:10,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 61 transitions, 158 flow [2021-03-11 22:27:10,885 INFO L129 PetriNetUnfolder]: 5/72 cut-off events. [2021-03-11 22:27:10,886 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-11 22:27:10,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 72 events. 5/72 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2021-03-11 22:27:10,887 INFO L116 LiptonReduction]: Number of co-enabled transitions 1008 [2021-03-11 22:27:12,032 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-03-11 22:27:12,211 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-03-11 22:27:12,270 INFO L131 LiptonReduction]: Checked pairs total: 3987 [2021-03-11 22:27:12,270 INFO L133 LiptonReduction]: Total number of compositions: 30 [2021-03-11 22:27:12,271 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1423 [2021-03-11 22:27:12,288 INFO L129 PetriNetUnfolder]: 5/41 cut-off events. [2021-03-11 22:27:12,288 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-11 22:27:12,288 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:27:12,289 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:27:12,289 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:27:12,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:27:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1862311449, now seen corresponding path program 1 times [2021-03-11 22:27:12,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:27:12,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016413885] [2021-03-11 22:27:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:27:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:27:12,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 22:27:12,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 22:27:12,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 22:27:12,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:27:12,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 22:27:12,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:27:12,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 22:27:12,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 22:27:12,632 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.3 percent of original size [2021-03-11 22:27:12,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 22:27:12,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 22:27:12,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 22:27:12,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:12,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:27:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:27:12,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016413885] [2021-03-11 22:27:12,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:27:12,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 22:27:12,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772529686] [2021-03-11 22:27:12,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 22:27:12,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:27:12,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 22:27:12,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-03-11 22:27:12,684 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 107 [2021-03-11 22:27:12,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 98 flow. Second operand has 13 states, 13 states have (on average 42.61538461538461) internal successors, (554), 13 states have internal predecessors, (554), 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) [2021-03-11 22:27:12,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:27:12,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 107 [2021-03-11 22:27:12,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:27:13,435 INFO L129 PetriNetUnfolder]: 887/1497 cut-off events. [2021-03-11 22:27:13,435 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2021-03-11 22:27:13,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3009 conditions, 1497 events. 887/1497 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7220 event pairs, 86 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 2605. Up to 753 conditions per place. [2021-03-11 22:27:13,443 INFO L132 encePairwiseOnDemand]: 92/107 looper letters, 78 selfloop transitions, 39 changer transitions 4/127 dead transitions. [2021-03-11 22:27:13,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 127 transitions, 541 flow [2021-03-11 22:27:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 22:27:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 22:27:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 819 transitions. [2021-03-11 22:27:13,454 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.4502473886750962 [2021-03-11 22:27:13,455 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 819 transitions. [2021-03-11 22:27:13,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 819 transitions. [2021-03-11 22:27:13,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:27:13,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 819 transitions. [2021-03-11 22:27:13,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 48.1764705882353) internal successors, (819), 17 states have internal predecessors, (819), 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) [2021-03-11 22:27:13,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 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) [2021-03-11 22:27:13,467 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 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) [2021-03-11 22:27:13,469 INFO L185 Difference]: Start difference. First operand has 35 places, 31 transitions, 98 flow. Second operand 17 states and 819 transitions. [2021-03-11 22:27:13,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 127 transitions, 541 flow [2021-03-11 22:27:13,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 127 transitions, 511 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-11 22:27:13,475 INFO L241 Difference]: Finished difference. Result has 54 places, 68 transitions, 316 flow [2021-03-11 22:27:13,476 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=316, PETRI_PLACES=54, PETRI_TRANSITIONS=68} [2021-03-11 22:27:13,477 INFO L335 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2021-03-11 22:27:13,477 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 68 transitions, 316 flow [2021-03-11 22:27:13,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 42.61538461538461) internal successors, (554), 13 states have internal predecessors, (554), 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) [2021-03-11 22:27:13,478 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:27:13,478 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:27:13,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:27:13,478 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:27:13,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:27:13,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1294390645, now seen corresponding path program 1 times [2021-03-11 22:27:13,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:27:13,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517014249] [2021-03-11 22:27:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:27:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 22:27:13,509 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 22:27:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 22:27:13,530 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 22:27:13,554 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 22:27:13,555 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 22:27:13,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:27:13,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:27:13 BasicIcfg [2021-03-11 22:27:13,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:27:13,598 INFO L168 Benchmark]: Toolchain (without parser) took 3412.69 ms. Allocated memory was 255.9 MB in the beginning and 415.2 MB in the end (delta: 159.4 MB). Free memory was 237.0 MB in the beginning and 353.2 MB in the end (delta: -116.1 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:13,598 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:27:13,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.97 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 236.4 MB in the beginning and 329.0 MB in the end (delta: -92.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:13,599 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.94 ms. Allocated memory is still 346.0 MB. Free memory was 329.0 MB in the beginning and 327.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:27:13,599 INFO L168 Benchmark]: Boogie Preprocessor took 25.53 ms. Allocated memory is still 346.0 MB. Free memory was 327.6 MB in the beginning and 326.9 MB in the end (delta: 729.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:13,599 INFO L168 Benchmark]: RCFGBuilder took 273.08 ms. Allocated memory is still 346.0 MB. Free memory was 326.9 MB in the beginning and 310.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:13,600 INFO L168 Benchmark]: TraceAbstraction took 2880.60 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 310.1 MB in the beginning and 353.2 MB in the end (delta: -43.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:13,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 198.97 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 236.4 MB in the beginning and 329.0 MB in the end (delta: -92.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.94 ms. Allocated memory is still 346.0 MB. Free memory was 329.0 MB in the beginning and 327.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.53 ms. Allocated memory is still 346.0 MB. Free memory was 327.6 MB in the beginning and 326.9 MB in the end (delta: 729.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 273.08 ms. Allocated memory is still 346.0 MB. Free memory was 326.9 MB in the beginning and 310.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2880.60 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 310.1 MB in the beginning and 353.2 MB in the end (delta: -43.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1410.3ms, 65 PlacesBefore, 35 PlacesAfterwards, 61 TransitionsBefore, 31 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 30 TotalNumberOfCompositions, 3987 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2489, positive: 2330, positive conditional: 0, positive unconditional: 2330, negative: 159, negative conditional: 0, negative unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 778, positive: 730, positive conditional: 0, positive unconditional: 730, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 778, positive: 730, positive conditional: 0, positive unconditional: 730, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 161, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 161, negative conditional: 0, negative unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2489, positive: 1600, positive conditional: 0, positive unconditional: 1600, negative: 111, negative conditional: 0, negative unconditional: 111, unknown: 778, unknown conditional: 0, unknown unconditional: 778] , Statistics on independence cache: Total cache size (in pairs): 191, Positive cache size: 173, Positive conditional cache size: 0, Positive unconditional cache size: 173, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - CounterExampleResult [Line: 37]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int counter = 0; [L23] 0 int val = 0; [L25] 0 pthread_t first_thread_id; [L26] 0 pthread_t second_thread_id; [L27] 0 pthread_t third_thread_id; [L29] FCALL, FORK 0 pthread_create(&first_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L16] 1 int *x = (int *)n; [L17] 1 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L33] 0 \read(first_thread_id) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L17] 1 ++counter VAL [++counter=1, counter=2, n={8:0}, n={8:0}, x={8:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 1 *x = ++counter [L18] 1 return 0; [L33] FCALL, JOIN 1 pthread_join(first_thread_id, NULL) VAL [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}] [L34] 0 \read(second_thread_id) VAL [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}] [L17] EXPR 2 ++counter VAL [++counter=1, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L17] 2 *x = ++counter [L18] 2 return 0; [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2758.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 796.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1474.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 69 SDslu, 34 SDs, 0 SdLazy, 557 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 274.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 359.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=1, InterpolantAutomatonStates: 17, 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: 5.5ms SsaConstructionTime, 71.2ms SatisfiabilityAnalysisTime, 279.7ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 411 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...