/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/regression/atomic/11b-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:28:32,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:28:32,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:28:32,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:28:32,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:28:32,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:28:32,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:28:32,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:28:32,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:28:32,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:28:32,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:28:32,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:28:32,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:28:32,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:28:32,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:28:32,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:28:32,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:28:32,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:28:32,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:28:32,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:28:32,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:28:32,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:28:32,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:28:32,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:28:32,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 22:28:32,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 22:28:32,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 22:28:32,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 22:28:32,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 22:28:32,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 22:28:32,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 22:28:32,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 22:28:32,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 22:28:32,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:28:32,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:28:32,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:28:32,515 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 22:28:32,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:28:32,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:28:32,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:28:32,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:28:32,533 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:28:32,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:28:32,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:28:32,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:28:32,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:28:32,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:28:32,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:28:32,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:28:32,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:28:32,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:28:32,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:28:32,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:28:32,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:28:32,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:28:32,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:28:32,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:28:32,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:28:32,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:28:32,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:28:32,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:28:32,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:28:32,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:28:32,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:28:32,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:28:32,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:28:32,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:28:32,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:28:32,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:28:32,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 22:28:32,806 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 22:28:32,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2021-03-11 22:28:32,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad563407a/20497b4a44d142dea5c75c5f5e5ffcad/FLAGda09eec06 [2021-03-11 22:28:33,249 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 22:28:33,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2021-03-11 22:28:33,250 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:28:33,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad563407a/20497b4a44d142dea5c75c5f5e5ffcad/FLAGda09eec06 [2021-03-11 22:28:33,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad563407a/20497b4a44d142dea5c75c5f5e5ffcad [2021-03-11 22:28:33,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:28:33,295 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 22:28:33,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 22:28:33,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 22:28:33,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 22:28:33,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13714f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33, skipping insertion in model container [2021-03-11 22:28:33,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 22:28:33,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 22:28:33,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:28:33,395 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 22:28:33,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:28:33,448 INFO L208 MainTranslator]: Completed translation [2021-03-11 22:28:33,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33 WrapperNode [2021-03-11 22:28:33,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 22:28:33,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:28:33,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:28:33,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:28:33,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:28:33,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:28:33,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:28:33,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:28:33,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (1/1) ... [2021-03-11 22:28:33,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:28:33,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:28:33,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:28:33,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:28:33,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (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 22:28:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 22:28:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 22:28:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 22:28:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-11 22:28:33,544 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-11 22:28:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:28:33,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:28:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 22:28:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 22:28:33,546 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 22:28:33,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:28:33,742 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 22:28:33,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:28:33 BoogieIcfgContainer [2021-03-11 22:28:33,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:28:33,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:28:33,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:28:33,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:28:33,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 10:28:33" (1/3) ... [2021-03-11 22:28:33,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a979e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:28:33, skipping insertion in model container [2021-03-11 22:28:33,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:28:33" (2/3) ... [2021-03-11 22:28:33,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a979e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:28:33, skipping insertion in model container [2021-03-11 22:28:33,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:28:33" (3/3) ... [2021-03-11 22:28:33,747 INFO L111 eAbstractionObserver]: Analyzing ICFG 11b-double-end.c [2021-03-11 22:28:33,760 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:28:33,763 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 22:28:33,764 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:28:33,781 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,781 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,781 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,782 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,782 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,782 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,782 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,782 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,782 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,783 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,783 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,783 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,785 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,785 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,785 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,786 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:28:33,790 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 22:28:33,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 22:28:33,826 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:28:33,826 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:28:33,826 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:28:33,826 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:28:33,826 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:28:33,826 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:28:33,826 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:28:33,826 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:28:33,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 51 flow [2021-03-11 22:28:33,854 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-11 22:28:33,854 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:33,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 22:28:33,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 51 flow [2021-03-11 22:28:33,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 37 flow [2021-03-11 22:28:33,867 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:28:33,876 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 17 transitions, 37 flow [2021-03-11 22:28:33,878 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 17 transitions, 37 flow [2021-03-11 22:28:33,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 17 transitions, 37 flow [2021-03-11 22:28:33,891 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 22:28:33,891 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:33,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 22:28:33,893 INFO L116 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-11 22:28:34,600 INFO L131 LiptonReduction]: Checked pairs total: 34 [2021-03-11 22:28:34,601 INFO L133 LiptonReduction]: Total number of compositions: 12 [2021-03-11 22:28:34,602 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 744 [2021-03-11 22:28:34,611 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-11 22:28:34,611 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:34,611 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:28:34,612 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-11 22:28:34,612 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:28:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:28:34,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2851156, now seen corresponding path program 1 times [2021-03-11 22:28:34,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:28:34,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977014774] [2021-03-11 22:28:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:28:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:28:34,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:34,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:28:34,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:28:34,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:28:34,723 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 22:28:34,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977014774] [2021-03-11 22:28:34,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:28:34,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 22:28:34,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084213544] [2021-03-11 22:28:34,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:28:34,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:28:34,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:28:34,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:28:34,739 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 35 [2021-03-11 22:28:34,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 13 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 22:28:34,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:28:34,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 35 [2021-03-11 22:28:34,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:28:34,752 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-11 22:28:34,752 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:28:34,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-11 22:28:34,753 INFO L132 encePairwiseOnDemand]: 32/35 looper letters, 1 selfloop transitions, 3 changer transitions 1/6 dead transitions. [2021-03-11 22:28:34,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 25 flow [2021-03-11 22:28:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:28:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:28:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2021-03-11 22:28:34,761 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2021-03-11 22:28:34,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2021-03-11 22:28:34,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2021-03-11 22:28:34,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:28:34,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2021-03-11 22:28:34,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 22:28:34,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:28:34,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:28:34,769 INFO L185 Difference]: Start difference. First operand has 9 places, 5 transitions, 13 flow. Second operand 3 states and 69 transitions. [2021-03-11 22:28:34,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 25 flow [2021-03-11 22:28:34,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 24 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:28:34,771 INFO L241 Difference]: Finished difference. Result has 10 places, 5 transitions, 18 flow [2021-03-11 22:28:34,772 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=18, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2021-03-11 22:28:34,773 INFO L335 CegarLoopForPetriNet]: 9 programPoint places, 1 predicate places. [2021-03-11 22:28:34,773 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 18 flow [2021-03-11 22:28:34,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 22:28:34,773 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:28:34,773 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 22:28:34,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:28:34,774 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:28:34,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:28:34,774 INFO L82 PathProgramCache]: Analyzing trace with hash 88386046, now seen corresponding path program 1 times [2021-03-11 22:28:34,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:28:34,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912172862] [2021-03-11 22:28:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:28:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 22:28:34,783 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 22:28:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 22:28:34,789 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 22:28:34,802 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 22:28:34,802 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 22:28:34,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:28:34,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:28:34 BasicIcfg [2021-03-11 22:28:34,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:28:34,817 INFO L168 Benchmark]: Toolchain (without parser) took 1523.88 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 234.8 MB in the beginning and 282.8 MB in the end (delta: -48.1 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:34,817 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 22:28:34,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.60 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 234.2 MB in the beginning and 334.1 MB in the end (delta: -99.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:34,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.50 ms. Allocated memory is still 350.2 MB. Free memory was 334.1 MB in the beginning and 333.1 MB in the end (delta: 936.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:34,818 INFO L168 Benchmark]: Boogie Preprocessor took 15.32 ms. Allocated memory is still 350.2 MB. Free memory was 333.1 MB in the beginning and 332.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:28:34,819 INFO L168 Benchmark]: RCFGBuilder took 254.96 ms. Allocated memory is still 350.2 MB. Free memory was 331.8 MB in the beginning and 320.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:34,819 INFO L168 Benchmark]: TraceAbstraction took 1071.85 ms. Allocated memory is still 350.2 MB. Free memory was 319.8 MB in the beginning and 282.8 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.0 GB. [2021-03-11 22:28:34,822 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 152.60 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 234.2 MB in the beginning and 334.1 MB in the end (delta: -99.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.50 ms. Allocated memory is still 350.2 MB. Free memory was 334.1 MB in the beginning and 333.1 MB in the end (delta: 936.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.32 ms. Allocated memory is still 350.2 MB. Free memory was 333.1 MB in the beginning and 332.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 254.96 ms. Allocated memory is still 350.2 MB. Free memory was 331.8 MB in the beginning and 320.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1071.85 ms. Allocated memory is still 350.2 MB. Free memory was 319.8 MB in the beginning and 282.8 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 723.0ms, 21 PlacesBefore, 9 PlacesAfterwards, 17 TransitionsBefore, 5 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 33, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 33, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 25, unknown conditional: 0, unknown unconditional: 25] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - CounterExampleResult [Line: 32]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; [L23] 0 pthread_t threadId; [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=-1] [L27] 0 x = 1 VAL [arg={0:0}, x=1] [L18] 1 x = 0 [L19] 1 return (void*)NULL; [L29] 0 x = x + 1 [L32] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 981.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 37.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 781.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=1, InterpolantAutomatonStates: 3, 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: 6.3ms SsaConstructionTime, 20.2ms SatisfiabilityAnalysisTime, 32.4ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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...