/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:21:59,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:21:59,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:21:59,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:21:59,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:21:59,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:21:59,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:21:59,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:21:59,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:21:59,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:21:59,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:21:59,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:21:59,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:21:59,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:21:59,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:21:59,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:21:59,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:21:59,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:21:59,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:21:59,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:21:59,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:21:59,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:21:59,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:21:59,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:21:59,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 14:21:59,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 14:21:59,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 14:21:59,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 14:21:59,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 14:21:59,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 14:21:59,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 14:21:59,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 14:21:59,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 14:21:59,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:21:59,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:21:59,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:21:59,159 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-NoLbe.epf [2021-06-10 14:21:59,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:21:59,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:21:59,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:21:59,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:21:59,188 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:21:59,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:21:59,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:21:59,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:21:59,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:21:59,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:21:59,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:21:59,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:21:59,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:21:59,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:21:59,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:21:59,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:21:59,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:21:59,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:21:59,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:21:59,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:21:59,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:21:59,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:21:59,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:21:59,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:21:59,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:21:59,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 14:21:59,450 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 14:21:59,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-06-10 14:21:59,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffad9ae9/20a394e04cc64ad79ec5b56736d069c9/FLAGdc903d301 [2021-06-10 14:21:59,934 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 14:21:59,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-06-10 14:21:59,934 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-10 14:21:59,934 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-10 14:21:59,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffad9ae9/20a394e04cc64ad79ec5b56736d069c9/FLAGdc903d301 [2021-06-10 14:21:59,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffad9ae9/20a394e04cc64ad79ec5b56736d069c9 [2021-06-10 14:21:59,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:21:59,975 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 14:21:59,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 14:21:59,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 14:21:59,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 14:21:59,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 02:21:59" (1/1) ... [2021-06-10 14:21:59,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3497aab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:21:59, skipping insertion in model container [2021-06-10 14:21:59,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 02:21:59" (1/1) ... [2021-06-10 14:21:59,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 14:21:59,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 14:22:00,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 14:22:00,122 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 14:22:00,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 14:22:00,140 INFO L208 MainTranslator]: Completed translation [2021-06-10 14:22:00,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00 WrapperNode [2021-06-10 14:22:00,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 14:22:00,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:22:00,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:22:00,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:22:00,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:22:00,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:22:00,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:22:00,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:22:00,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (1/1) ... [2021-06-10 14:22:00,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:22:00,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:22:00,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:22:00,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:22:00,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (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 [2021-06-10 14:22:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-06-10 14:22:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 14:22:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:22:00,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:22:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-10 14:22:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-10 14:22:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 14:22:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure myThread [2021-06-10 14:22:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure myThread [2021-06-10 14:22:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 14:22:00,276 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:22:00,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:22:00,460 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-10 14:22:00,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:22:00 BoogieIcfgContainer [2021-06-10 14:22:00,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:22:00,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:22:00,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:22:00,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:22:00,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 02:21:59" (1/3) ... [2021-06-10 14:22:00,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30702807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:22:00, skipping insertion in model container [2021-06-10 14:22:00,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 02:22:00" (2/3) ... [2021-06-10 14:22:00,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30702807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:22:00, skipping insertion in model container [2021-06-10 14:22:00,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:22:00" (3/3) ... [2021-06-10 14:22:00,465 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadReturn.c [2021-06-10 14:22:00,468 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:22:00,471 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 14:22:00,471 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:22:00,494 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:22:00,495 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:22:00,495 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:22:00,495 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:22:00,496 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:22:00,496 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:22:00,523 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-10 14:22:00,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-10 14:22:00,547 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:22:00,547 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:22:00,547 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:22:00,547 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:22:00,547 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:22:00,547 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:22:00,547 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:22:00,547 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:22:00,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2021-06-10 14:22:00,568 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-06-10 14:22:00,568 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 14:22:00,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 0/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 14:22:00,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2021-06-10 14:22:00,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 44 flow [2021-06-10 14:22:00,577 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-06-10 14:22:00,577 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 14:22:00,577 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:22:00,578 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:22:00,578 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:22:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:22:00,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1045639328, now seen corresponding path program 1 times [2021-06-10 14:22:00,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:22:00,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016168903] [2021-06-10 14:22:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:22:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:22:00,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:22:00,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:22:00,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:22:00,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 14:22:00,797 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-06-10 14:22:00,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-10 14:22:00,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:22:00,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:22:00,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:22:00,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:22:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:22:00,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016168903] [2021-06-10 14:22:00,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:22:00,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 14:22:00,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912876066] [2021-06-10 14:22:00,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 14:22:00,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:22:00,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 14:22:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 14:22:00,873 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 29 [2021-06-10 14:22:00,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2021-06-10 14:22:00,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:22:00,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 29 [2021-06-10 14:22:00,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:22:00,999 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-06-10 14:22:00,999 INFO L130 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2021-06-10 14:22:00,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 18 events. 0/18 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/20 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-06-10 14:22:01,000 INFO L132 encePairwiseOnDemand]: 23/29 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-06-10 14:22:01,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 60 flow [2021-06-10 14:22:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 14:22:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 14:22:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2021-06-10 14:22:01,009 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5665024630541872 [2021-06-10 14:22:01,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 115 transitions. [2021-06-10 14:22:01,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 115 transitions. [2021-06-10 14:22:01,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:22:01,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 115 transitions. [2021-06-10 14:22:01,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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) [2021-06-10 14:22:01,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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) [2021-06-10 14:22:01,021 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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) [2021-06-10 14:22:01,022 INFO L185 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 7 states and 115 transitions. [2021-06-10 14:22:01,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 60 flow [2021-06-10 14:22:01,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 14:22:01,025 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2021-06-10 14:22:01,026 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2021-06-10 14:22:01,026 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2021-06-10 14:22:01,026 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2021-06-10 14:22:01,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2021-06-10 14:22:01,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:22:01,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 02:22:01 BasicIcfg [2021-06-10 14:22:01,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 14:22:01,031 INFO L168 Benchmark]: Toolchain (without parser) took 1055.46 ms. Allocated memory is still 346.0 MB. Free memory was 307.9 MB in the beginning and 265.8 MB in the end (delta: 42.1 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.0 GB. [2021-06-10 14:22:01,031 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 326.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:22:01,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.90 ms. Allocated memory is still 346.0 MB. Free memory was 307.7 MB in the beginning and 328.8 MB in the end (delta: -21.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. [2021-06-10 14:22:01,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.05 ms. Allocated memory is still 346.0 MB. Free memory was 328.8 MB in the beginning and 327.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:22:01,032 INFO L168 Benchmark]: Boogie Preprocessor took 19.16 ms. Allocated memory is still 346.0 MB. Free memory was 326.7 MB in the beginning and 326.7 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 14:22:01,033 INFO L168 Benchmark]: RCFGBuilder took 276.28 ms. Allocated memory is still 346.0 MB. Free memory was 326.7 MB in the beginning and 312.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 14:22:01,033 INFO L168 Benchmark]: TraceAbstraction took 568.31 ms. Allocated memory is still 346.0 MB. Free memory was 312.0 MB in the beginning and 265.8 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. [2021-06-10 14:22:01,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 326.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 163.90 ms. Allocated memory is still 346.0 MB. Free memory was 307.7 MB in the beginning and 328.8 MB in the end (delta: -21.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.05 ms. Allocated memory is still 346.0 MB. Free memory was 328.8 MB in the beginning and 327.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.16 ms. Allocated memory is still 346.0 MB. Free memory was 326.7 MB in the beginning and 326.7 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 276.28 ms. Allocated memory is still 346.0 MB. Free memory was 326.7 MB in the beginning and 312.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 568.31 ms. Allocated memory is still 346.0 MB. Free memory was 312.0 MB in the beginning and 265.8 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 31]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 483.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 160.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 14 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 150.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 7, 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: 12.6ms SsaConstructionTime, 33.5ms SatisfiabilityAnalysisTime, 160.2ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 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...