/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/13-loop-after.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:37:30,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:37:30,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:37:30,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:37:30,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:37:30,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:37:30,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:37:30,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:37:30,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:37:30,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:37:30,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:37:30,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:37:30,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:37:30,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:37:30,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:37:30,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:37:30,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:37:30,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:37:30,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:37:30,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:37:30,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:37:30,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:37:30,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:37:30,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:37:30,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 17:37:30,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 17:37:30,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 17:37:30,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 17:37:30,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 17:37:30,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 17:37:30,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 17:37:30,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 17:37:30,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 17:37:30,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:37:30,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:37:30,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:37:30,237 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-RepeatedSemanticLbe.epf [2021-03-25 17:37:30,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:37:30,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:37:30,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:37:30,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:37:30,277 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:37:30,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:37:30,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:37:30,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:37:30,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:37:30,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:37:30,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:37:30,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:37:30,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:37:30,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:37:30,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:37:30,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:37:30,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:37:30,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:37:30,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:37:30,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:37:30,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:37:30,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:37:30,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:37:30,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:37:30,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:37:30,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:37:30,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:37:30,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:37:30,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:37:30,281 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:37:30,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:37:30,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:37:30,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:37:30,578 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 17:37:30,579 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 17:37:30,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/13-loop-after.c [2021-03-25 17:37:30,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befabbed2/0a8a70dface84d6e87414154b68a23e1/FLAGd034c1b05 [2021-03-25 17:37:31,028 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 17:37:31,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/13-loop-after.c [2021-03-25 17:37:31,029 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:37:31,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befabbed2/0a8a70dface84d6e87414154b68a23e1/FLAGd034c1b05 [2021-03-25 17:37:31,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befabbed2/0a8a70dface84d6e87414154b68a23e1 [2021-03-25 17:37:31,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:37:31,404 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 17:37:31,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 17:37:31,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 17:37:31,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 17:37:31,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd4bcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31, skipping insertion in model container [2021-03-25 17:37:31,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 17:37:31,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 17:37:31,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:37:31,557 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 17:37:31,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:37:31,604 INFO L208 MainTranslator]: Completed translation [2021-03-25 17:37:31,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31 WrapperNode [2021-03-25 17:37:31,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 17:37:31,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:37:31,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:37:31,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:37:31,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:37:31,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:37:31,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:37:31,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:37:31,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (1/1) ... [2021-03-25 17:37:31,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:37:31,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:37:31,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:37:31,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:37:31,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (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 [2021-03-25 17:37:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 17:37:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 17:37:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 17:37:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 17:37:31,734 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 17:37:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:37:31,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:37:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 17:37:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 17:37:31,736 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 17:37:31,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:37:31,980 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-25 17:37:31,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:37:31 BoogieIcfgContainer [2021-03-25 17:37:31,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:37:31,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:37:31,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:37:31,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:37:31,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:37:31" (1/3) ... [2021-03-25 17:37:31,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a60a7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:37:31, skipping insertion in model container [2021-03-25 17:37:31,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:37:31" (2/3) ... [2021-03-25 17:37:31,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a60a7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:37:31, skipping insertion in model container [2021-03-25 17:37:31,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:37:31" (3/3) ... [2021-03-25 17:37:31,988 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-loop-after.c [2021-03-25 17:37:31,992 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:37:31,995 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:37:31,996 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:37:32,014 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,014 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,014 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,014 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,015 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,015 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,015 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,015 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,015 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,016 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,016 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,016 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,017 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,018 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,018 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,018 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:37:32,034 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:37:32,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 17:37:32,081 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:37:32,082 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:37:32,082 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:37:32,082 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:37:32,082 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:37:32,082 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:37:32,082 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:37:32,082 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:37:32,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 29 transitions, 63 flow [2021-03-25 17:37:32,124 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-25 17:37:32,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:37:32,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 2/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2021-03-25 17:37:32,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 29 transitions, 63 flow [2021-03-25 17:37:32,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 28 transitions, 59 flow [2021-03-25 17:37:32,136 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:37:32,147 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 28 transitions, 59 flow [2021-03-25 17:37:32,150 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 28 transitions, 59 flow [2021-03-25 17:37:32,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 59 flow [2021-03-25 17:37:32,168 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-25 17:37:32,169 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:37:32,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 2/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2021-03-25 17:37:32,171 INFO L142 LiptonReduction]: Number of co-enabled transitions 144 [2021-03-25 17:37:32,547 INFO L154 LiptonReduction]: Checked pairs total: 126 [2021-03-25 17:37:32,548 INFO L156 LiptonReduction]: Total number of compositions: 17 [2021-03-25 17:37:32,549 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 414 [2021-03-25 17:37:32,556 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 17:37:32,556 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:37:32,557 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:37:32,557 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 17:37:32,557 INFO L428 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:37:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:37:32,561 INFO L82 PathProgramCache]: Analyzing trace with hash 105308825, now seen corresponding path program 1 times [2021-03-25 17:37:32,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:37:32,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755282175] [2021-03-25 17:37:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:37:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:37:32,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:37:32,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:37:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:37:32,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755282175] [2021-03-25 17:37:32,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:37:32,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 17:37:32,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994245749] [2021-03-25 17:37:32,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-25 17:37:32,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:37:32,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-25 17:37:32,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-25 17:37:32,718 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 46 [2021-03-25 17:37:32,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 29 flow. Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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) [2021-03-25 17:37:32,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:37:32,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 46 [2021-03-25 17:37:32,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:37:32,724 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-03-25 17:37:32,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:37:32,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 10 events. 1/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 2/12 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2021-03-25 17:37:32,726 INFO L132 encePairwiseOnDemand]: 44/46 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-03-25 17:37:32,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 10 transitions, 23 flow [2021-03-25 17:37:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-25 17:37:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-25 17:37:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2021-03-25 17:37:32,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2021-03-25 17:37:32,735 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 84 transitions. [2021-03-25 17:37:32,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 84 transitions. [2021-03-25 17:37:32,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:37:32,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 84 transitions. [2021-03-25 17:37:32,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2021-03-25 17:37:32,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-03-25 17:37:32,743 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-03-25 17:37:32,744 INFO L185 Difference]: Start difference. First operand has 16 places, 13 transitions, 29 flow. Second operand 2 states and 84 transitions. [2021-03-25 17:37:32,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 10 transitions, 23 flow [2021-03-25 17:37:32,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 10 transitions, 22 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:37:32,749 INFO L241 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2021-03-25 17:37:32,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2021-03-25 17:37:32,751 INFO L343 CegarLoopForPetriNet]: 16 programPoint places, -3 predicate places. [2021-03-25 17:37:32,751 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:37:32,751 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 0 transitions, 0 flow [2021-03-25 17:37:32,752 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 0 transitions, 0 flow [2021-03-25 17:37:32,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 17:37:32,752 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 17:37:32,752 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:37:32,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 17:37:32,753 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 17:37:32,753 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:37:32,753 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:37:32,753 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 17:37:32,758 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 17:37:32,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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) [2021-03-25 17:37:32,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:37:32,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:37:32 BasicIcfg [2021-03-25 17:37:32,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:37:32,769 INFO L168 Benchmark]: Toolchain (without parser) took 1363.89 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 234.6 MB in the beginning and 301.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.0 GB. [2021-03-25 17:37:32,770 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:37:32,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.94 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 234.6 MB in the beginning and 331.5 MB in the end (delta: -96.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 17:37:32,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 348.1 MB. Free memory was 331.5 MB in the beginning and 330.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:37:32,778 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 348.1 MB. Free memory was 330.0 MB in the beginning and 329.4 MB in the end (delta: 691.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:37:32,782 INFO L168 Benchmark]: RCFGBuilder took 312.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.4 MB in the beginning and 316.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 17:37:32,782 INFO L168 Benchmark]: TraceAbstraction took 783.90 ms. Allocated memory is still 348.1 MB. Free memory was 316.1 MB in the beginning and 301.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.0 GB. [2021-03-25 17:37:32,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 199.94 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 234.6 MB in the beginning and 331.5 MB in the end (delta: -96.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 348.1 MB. Free memory was 331.5 MB in the beginning and 330.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 348.1 MB. Free memory was 330.0 MB in the beginning and 329.4 MB in the end (delta: 691.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 312.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.4 MB in the beginning and 316.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 783.90 ms. Allocated memory is still 348.1 MB. Free memory was 316.1 MB in the beginning and 301.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 397.5ms, 30 PlacesBefore, 16 PlacesAfterwards, 28 TransitionsBefore, 13 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 3 FixpointIterations, 6 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 17 TotalNumberOfCompositions, 126 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 82, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 68, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 68, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 68, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 82, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 68, unknown conditional: 0, unknown unconditional: 68] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 13 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 20]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 685.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 38.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 471.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 2, 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: 3.4ms SsaConstructionTime, 14.3ms SatisfiabilityAnalysisTime, 59.9ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...