/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/pthreadMutex01-safe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:35:57,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:35:57,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:35:57,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:35:57,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:35:57,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:35:57,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:35:57,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:35:57,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:35:57,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:35:57,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:35:57,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:35:57,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:35:57,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:35:57,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:35:57,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:35:57,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:35:57,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:35:57,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:35:57,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:35:57,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:35:57,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:35:57,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:35:57,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:35:57,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 17:35:57,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 17:35:57,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 17:35:57,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 17:35:57,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 17:35:57,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 17:35:57,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 17:35:57,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 17:35:57,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 17:35:57,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:35:57,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:35:57,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:35:57,418 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 17:35:57,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:35:57,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:35:57,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:35:57,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:35:57,456 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:35:57,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:35:57,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:35:57,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:35:57,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:35:57,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:35:57,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:35:57,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:35:57,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:35:57,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:35:57,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:35:57,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:35:57,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:35:57,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:35:57,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:35:57,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:35:57,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:35:57,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:35:57,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:35:57,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:35:57,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:35:57,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:35:57,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:35:57,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:35:57,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:35:57,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:35:57,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:35:57,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:35:57,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:35:57,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 17:35:57,762 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 17:35:57,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-03-25 17:35:57,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ef57224/6d76b36093714a2bbd72db0bb1dca955/FLAG953645ab9 [2021-03-25 17:35:58,286 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 17:35:58,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex01-safe.c [2021-03-25 17:35:58,287 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:35:58,287 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:35:58,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ef57224/6d76b36093714a2bbd72db0bb1dca955/FLAG953645ab9 [2021-03-25 17:35:58,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ef57224/6d76b36093714a2bbd72db0bb1dca955 [2021-03-25 17:35:58,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:35:58,681 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 17:35:58,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 17:35:58,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 17:35:58,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 17:35:58,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce3f7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58, skipping insertion in model container [2021-03-25 17:35:58,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 17:35:58,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 17:35:58,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:35:58,875 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 17:35:58,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:35:58,899 INFO L208 MainTranslator]: Completed translation [2021-03-25 17:35:58,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58 WrapperNode [2021-03-25 17:35:58,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 17:35:58,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:35:58,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:35:58,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:35:58,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:35:58,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:35:58,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:35:58,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:35:58,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (1/1) ... [2021-03-25 17:35:58,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:35:58,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:35:58,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:35:58,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:35:58,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (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 17:35:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-03-25 17:35:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 17:35:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:35:58,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:35:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 17:35:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 17:35:59,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:35:59,205 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 17:35:59,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:35:59 BoogieIcfgContainer [2021-03-25 17:35:59,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:35:59,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:35:59,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:35:59,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:35:59,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:35:58" (1/3) ... [2021-03-25 17:35:59,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bce217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:35:59, skipping insertion in model container [2021-03-25 17:35:59,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:35:58" (2/3) ... [2021-03-25 17:35:59,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bce217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:35:59, skipping insertion in model container [2021-03-25 17:35:59,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:35:59" (3/3) ... [2021-03-25 17:35:59,213 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex01-safe.c [2021-03-25 17:35:59,218 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:35:59,222 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 17:35:59,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 17:35:59,265 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:35:59,266 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:35:59,266 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:35:59,266 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:35:59,266 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:35:59,266 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:35:59,266 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:35:59,266 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:35:59,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 11 transitions, 22 flow [2021-03-25 17:35:59,294 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-03-25 17:35:59,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:35:59,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 11 events. 1/11 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. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:35:59,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 11 places, 11 transitions, 22 flow [2021-03-25 17:35:59,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 8 places, 8 transitions, 16 flow [2021-03-25 17:35:59,301 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:35:59,313 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 8 places, 8 transitions, 16 flow [2021-03-25 17:35:59,317 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 8 places, 8 transitions, 16 flow [2021-03-25 17:35:59,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 8 places, 8 transitions, 16 flow [2021-03-25 17:35:59,322 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-25 17:35:59,322 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:35:59,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9 conditions, 8 events. 1/8 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. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:35:59,324 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 17:35:59,616 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-03-25 17:35:59,852 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-03-25 17:36:00,008 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:36:00,008 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 17:36:00,012 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 712 [2021-03-25 17:36:00,024 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-25 17:36:00,024 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:36:00,025 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:36:00,025 INFO L263 CegarLoopForPetriNet]: trace histogram [1] [2021-03-25 17:36:00,025 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:36:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:36:00,031 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-03-25 17:36:00,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:36:00,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586040146] [2021-03-25 17:36:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:36:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:36:00,116 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 17:36:00,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586040146] [2021-03-25 17:36:00,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:36:00,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-03-25 17:36:00,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129803917] [2021-03-25 17:36:00,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-25 17:36:00,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:36:00,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-25 17:36:00,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-25 17:36:00,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 17 [2021-03-25 17:36:00,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 17:36:00,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:36:00,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 17 [2021-03-25 17:36:00,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:36:00,146 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-25 17:36:00,147 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:36:00,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5 conditions, 3 events. 0/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/4 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 17:36:00,148 INFO L132 encePairwiseOnDemand]: 16/17 looper letters, 0 selfloop transitions, 0 changer transitions 0/3 dead transitions. [2021-03-25 17:36:00,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 3 transitions, 6 flow [2021-03-25 17:36:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-25 17:36:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-25 17:36:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 27 transitions. [2021-03-25 17:36:00,157 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2021-03-25 17:36:00,158 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 27 transitions. [2021-03-25 17:36:00,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 27 transitions. [2021-03-25 17:36:00,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:36:00,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 27 transitions. [2021-03-25 17:36:00,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 17:36:00,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 17:36:00,167 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 17:36:00,168 INFO L185 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 2 states and 27 transitions. [2021-03-25 17:36:00,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 3 transitions, 6 flow [2021-03-25 17:36:00,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 3 transitions, 6 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 17:36:00,171 INFO L241 Difference]: Finished difference. Result has 5 places, 3 transitions, 6 flow [2021-03-25 17:36:00,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=6, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=6, PETRI_PLACES=5, PETRI_TRANSITIONS=3} [2021-03-25 17:36:00,175 INFO L343 CegarLoopForPetriNet]: 5 programPoint places, 0 predicate places. [2021-03-25 17:36:00,175 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:36:00,175 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 5 places, 3 transitions, 6 flow [2021-03-25 17:36:00,176 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 5 places, 3 transitions, 6 flow [2021-03-25 17:36:00,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 4 places, 3 transitions, 6 flow [2021-03-25 17:36:00,178 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-25 17:36:00,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:36:00,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4 conditions, 3 events. 0/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 17:36:00,179 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 17:36:00,483 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2021-03-25 17:36:00,575 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:36:00,575 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 17:36:00,575 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 400 [2021-03-25 17:36:00,578 INFO L480 AbstractCegarLoop]: Abstraction has has 2 places, 1 transitions, 2 flow [2021-03-25 17:36:00,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 17:36:00,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:36:00,578 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-25 17:36:00,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:36:00,579 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:36:00,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:36:00,587 INFO L82 PathProgramCache]: Analyzing trace with hash 46797, now seen corresponding path program 1 times [2021-03-25 17:36:00,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:36:00,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22163863] [2021-03-25 17:36:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:36:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:36:00,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:36:00,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:36:00,667 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 17:36:00,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22163863] [2021-03-25 17:36:00,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:36:00,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 17:36:00,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431184246] [2021-03-25 17:36:00,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:36:00,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:36:00,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:36:00,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:36:00,675 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 19 [2021-03-25 17:36:00,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2 places, 1 transitions, 2 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 17:36:00,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:36:00,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 19 [2021-03-25 17:36:00,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:36:00,683 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 17:36:00,683 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:36:00,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2 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. 1/1 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 17:36:00,683 INFO L132 encePairwiseOnDemand]: 18/19 looper letters, 0 selfloop transitions, 0 changer transitions 0/0 dead transitions. [2021-03-25 17:36:00,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2 places, 0 transitions, 0 flow [2021-03-25 17:36:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-25 17:36:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-25 17:36:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 17 transitions. [2021-03-25 17:36:00,684 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2021-03-25 17:36:00,684 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 17 transitions. [2021-03-25 17:36:00,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 17 transitions. [2021-03-25 17:36:00,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:36:00,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 17 transitions. [2021-03-25 17:36:00,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 17:36:00,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 17:36:00,685 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 17:36:00,685 INFO L185 Difference]: Start difference. First operand has 2 places, 1 transitions, 2 flow. Second operand 2 states and 17 transitions. [2021-03-25 17:36:00,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2 places, 0 transitions, 0 flow [2021-03-25 17:36:00,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2 places, 0 transitions, 0 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 17:36:00,686 INFO L241 Difference]: Finished difference. Result has 2 places, 0 transitions, 0 flow [2021-03-25 17:36:00,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=0, PETRI_DIFFERENCE_MINUEND_PLACES=1, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=0, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=0, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=2, PETRI_TRANSITIONS=0} [2021-03-25 17:36:00,686 INFO L343 CegarLoopForPetriNet]: 5 programPoint places, -3 predicate places. [2021-03-25 17:36:00,686 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:36:00,687 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2 places, 0 transitions, 0 flow [2021-03-25 17:36:00,687 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 2 places, 0 transitions, 0 flow [2021-03-25 17:36:00,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 17:36:00,687 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 17:36:00,687 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:36:00,687 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 17:36:00,687 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 17:36:00,687 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:36:00,688 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:36:00,688 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 17:36:00,688 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 17:36:00,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 17:36:00,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:36:00,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:36:00 BoogieIcfgContainer [2021-03-25 17:36:00,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:36:00,695 INFO L168 Benchmark]: Toolchain (without parser) took 2013.63 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.8 MB in the beginning and 318.1 MB in the end (delta: -84.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:36:00,697 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:36:00,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.30 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.4 MB in the beginning and 345.2 MB in the end (delta: -111.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-25 17:36:00,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.48 ms. Allocated memory is still 362.8 MB. Free memory was 344.7 MB in the beginning and 343.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:36:00,703 INFO L168 Benchmark]: Boogie Preprocessor took 13.19 ms. Allocated memory is still 362.8 MB. Free memory was 343.6 MB in the beginning and 342.6 MB in the end (delta: 991.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:36:00,703 INFO L168 Benchmark]: RCFGBuilder took 266.70 ms. Allocated memory is still 362.8 MB. Free memory was 342.6 MB in the beginning and 331.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-25 17:36:00,704 INFO L168 Benchmark]: TraceAbstraction took 1485.29 ms. Allocated memory is still 362.8 MB. Free memory was 331.0 MB in the beginning and 319.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.0 GB. [2021-03-25 17:36:00,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 217.30 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.4 MB in the beginning and 345.2 MB in the end (delta: -111.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.48 ms. Allocated memory is still 362.8 MB. Free memory was 344.7 MB in the beginning and 343.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.19 ms. Allocated memory is still 362.8 MB. Free memory was 343.6 MB in the beginning and 342.6 MB in the end (delta: 991.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 266.70 ms. Allocated memory is still 362.8 MB. Free memory was 342.6 MB in the beginning and 331.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1485.29 ms. Allocated memory is still 362.8 MB. Free memory was 331.0 MB in the beginning and 319.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 692.0ms, 8 PlacesBefore, 5 PlacesAfterwards, 8 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 3 FixpointIterations, 5 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 6 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 399.3ms, 5 PlacesBefore, 2 PlacesAfterwards, 3 TransitionsBefore, 1 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 2 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: 43]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 47]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1428.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 57.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 755.5ms, 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, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 7.2ms SsaConstructionTime, 26.1ms SatisfiabilityAnalysisTime, 64.4ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...