/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:29:47,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:29:47,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:29:47,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:29:47,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:29:47,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:29:47,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:29:47,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:29:47,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:29:47,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:29:47,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:29:47,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:29:47,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:29:47,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:29:47,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:29:47,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:29:47,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:29:47,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:29:47,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:29:47,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:29:47,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:29:47,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:29:47,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:29:47,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:29:47,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 13:29:47,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:29:47,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:29:47,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:29:47,775 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-VariableLbe.epf [2021-03-24 13:29:47,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:29:47,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:29:47,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:29:47,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:29:47,797 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:29:47,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:29:47,797 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:29:47,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:29:47,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:29:47,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:29:47,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:29:47,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:29:47,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:29:47,798 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:29:47,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:29:47,799 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:29:47,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:29:47,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:29:47,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:29:47,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:29:47,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:29:47,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:29:47,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:29:47,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:29:47,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:29:47,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:29:47,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:29:47,801 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:29:47,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:29:47,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:29:48,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:29:48,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:29:48,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:29:48,088 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:29:48,089 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:29:48,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Safe.bpl [2021-03-24 13:29:48,090 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Safe.bpl' [2021-03-24 13:29:48,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:29:48,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:29:48,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:29:48,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:29:48,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:29:48,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:29:48,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:29:48,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:29:48,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:29:48,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/1) ... [2021-03-24 13:29:48,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:29:48,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:29:48,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:29:48,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:29:48,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (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 [2021-03-24 13:29:48,699 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2021-03-24 13:29:48,699 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2021-03-24 13:29:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-03-24 13:29:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-03-24 13:29:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:29:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:29:48,702 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:29:48,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:29:48,825 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 13:29:48,827 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:29:48 BoogieIcfgContainer [2021-03-24 13:29:48,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:29:48,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:29:48,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:29:48,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:29:48,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:48" (1/2) ... [2021-03-24 13:29:48,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f298bb and model type ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:29:48, skipping insertion in model container [2021-03-24 13:29:48,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:29:48" (2/2) ... [2021-03-24 13:29:48,858 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest-Safe.bpl [2021-03-24 13:29:48,862 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:29:48,865 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:29:48,866 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:29:48,881 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,881 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,881 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,882 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,882 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,882 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,883 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,883 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,884 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,888 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:48,893 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-24 13:29:48,908 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 13:29:48,924 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:29:48,925 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:29:48,925 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:29:48,925 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:29:48,925 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:29:48,925 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:29:48,925 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:29:48,925 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:29:48,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 14 transitions, 44 flow [2021-03-24 13:29:48,947 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-24 13:29:48,948 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 13:29:48,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 13:29:48,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 14 transitions, 44 flow [2021-03-24 13:29:48,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 10 transitions, 32 flow [2021-03-24 13:29:48,952 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:29:48,959 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 10 transitions, 32 flow [2021-03-24 13:29:48,962 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 10 transitions, 32 flow [2021-03-24 13:29:48,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 10 transitions, 32 flow [2021-03-24 13:29:48,967 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-24 13:29:48,967 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 13:29:48,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 11 events. 0/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 13:29:48,969 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-24 13:29:49,010 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-24 13:29:49,010 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-24 13:29:49,013 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 60 [2021-03-24 13:29:49,020 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 13:29:49,021 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 13:29:49,021 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:49,021 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 13:29:49,021 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:49,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1428659103, now seen corresponding path program 1 times [2021-03-24 13:29:49,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:49,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030047904] [2021-03-24 13:29:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:49,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:29:49,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:29:49,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:29:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:49,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030047904] [2021-03-24 13:29:49,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:49,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:29:49,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27038430] [2021-03-24 13:29:49,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:29:49,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:49,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:29:49,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:29:49,151 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 16 [2021-03-24 13:29:49,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 8 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-03-24 13:29:49,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:49,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 16 [2021-03-24 13:29:49,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:49,171 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 13:29:49,172 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 13:29:49,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 7 events. 0/7 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 13:29:49,173 INFO L132 encePairwiseOnDemand]: 14/16 looper letters, 0 selfloop transitions, 1 changer transitions 0/7 dead transitions. [2021-03-24 13:29:49,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 25 flow [2021-03-24 13:29:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:29:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:29:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2021-03-24 13:29:49,180 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-03-24 13:29:49,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 44 transitions. [2021-03-24 13:29:49,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 44 transitions. [2021-03-24 13:29:49,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:49,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 44 transitions. [2021-03-24 13:29:49,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-03-24 13:29:49,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-03-24 13:29:49,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-03-24 13:29:49,189 INFO L185 Difference]: Start difference. First operand has 14 places, 8 transitions, 28 flow. Second operand 3 states and 44 transitions. [2021-03-24 13:29:49,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 25 flow [2021-03-24 13:29:49,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 7 transitions, 20 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:49,193 INFO L241 Difference]: Finished difference. Result has 13 places, 7 transitions, 20 flow [2021-03-24 13:29:49,194 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=13, PETRI_TRANSITIONS=7} [2021-03-24 13:29:49,195 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -1 predicate places. [2021-03-24 13:29:49,195 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 7 transitions, 20 flow [2021-03-24 13:29:49,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-03-24 13:29:49,195 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:49,195 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 13:29:49,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:29:49,196 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1428660095, now seen corresponding path program 1 times [2021-03-24 13:29:49,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:49,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135677143] [2021-03-24 13:29:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:49,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:49,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:49,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:49,263 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 13:29:49,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:49,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135677143] [2021-03-24 13:29:49,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:49,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 13:29:49,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336773224] [2021-03-24 13:29:49,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 13:29:49,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:49,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 13:29:49,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-24 13:29:49,282 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 16 [2021-03-24 13:29:49,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 7 transitions, 20 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-03-24 13:29:49,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:49,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 16 [2021-03-24 13:29:49,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:49,337 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-24 13:29:49,337 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:29:49,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 8 events. 1/8 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 5. Up to 3 conditions per place. [2021-03-24 13:29:49,338 INFO L132 encePairwiseOnDemand]: 11/16 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-24 13:29:49,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 7 transitions, 36 flow [2021-03-24 13:29:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 13:29:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 13:29:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2021-03-24 13:29:49,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2021-03-24 13:29:49,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 49 transitions. [2021-03-24 13:29:49,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 49 transitions. [2021-03-24 13:29:49,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:49,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 49 transitions. [2021-03-24 13:29:49,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-03-24 13:29:49,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2021-03-24 13:29:49,342 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2021-03-24 13:29:49,342 INFO L185 Difference]: Start difference. First operand has 13 places, 7 transitions, 20 flow. Second operand 6 states and 49 transitions. [2021-03-24 13:29:49,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 7 transitions, 36 flow [2021-03-24 13:29:49,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 7 transitions, 34 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:49,343 INFO L241 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2021-03-24 13:29:49,343 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2021-03-24 13:29:49,343 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 2 predicate places. [2021-03-24 13:29:49,343 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2021-03-24 13:29:49,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-03-24 13:29:49,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:29:49,347 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:29:49 BasicIcfg [2021-03-24 13:29:49,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:29:49,348 INFO L168 Benchmark]: Toolchain (without parser) took 775.75 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 197.6 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.0 GB. [2021-03-24 13:29:49,348 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:29:49,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.27 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:29:49,349 INFO L168 Benchmark]: Boogie Preprocessor took 12.44 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.1 MB in the end (delta: 957.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:29:49,350 INFO L168 Benchmark]: RCFGBuilder took 215.14 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 226.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-24 13:29:49,351 INFO L168 Benchmark]: TraceAbstraction took 517.36 ms. Allocated memory is still 255.9 MB. Free memory was 225.6 MB in the beginning and 197.6 MB in the end (delta: 28.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.0 GB. [2021-03-24 13:29:49,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.27 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.44 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.1 MB in the end (delta: 957.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 215.14 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 226.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 517.36 ms. Allocated memory is still 255.9 MB. Free memory was 225.6 MB in the beginning and 197.6 MB in the end (delta: 28.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 48.1ms, 16 PlacesBefore, 14 PlacesAfterwards, 10 TransitionsBefore, 8 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , 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: 22]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 423.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 110.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 91.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 8 SDslu, 3 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 9, 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: 4.0ms SsaConstructionTime, 17.3ms SatisfiabilityAnalysisTime, 113.4ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...