/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:54:21,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:54:21,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:54:21,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:54:21,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:54:21,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:54:21,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:54:21,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:54:21,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:54:21,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:54:21,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:54:21,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:54:21,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:54:21,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:54:21,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:54:21,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:54:21,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:54:21,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:54:21,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:54:21,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:54:21,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:54:21,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:54:21,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:54:21,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:54:21,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:54:21,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:54:21,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:54:21,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:54:21,803 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-RepeatedVariableLbe.epf [2021-03-25 07:54:21,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:54:21,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:54:21,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:54:21,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:54:21,824 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:54:21,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:54:21,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:54:21,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:54:21,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:54:21,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:54:21,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:54:21,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:54:21,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:54:21,826 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:54:21,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:54:21,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:54:21,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:54:21,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:54:21,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:54:21,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:54:21,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:54:21,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:21,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:54:21,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:54:21,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:54:21,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:54:21,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:54:21,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:54:21,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:54:21,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:54:21,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:54:22,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:54:22,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:54:22,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:54:22,154 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 07:54:22,156 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 07:54:22,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Safe.bpl [2021-03-25 07:54:22,160 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Safe.bpl' [2021-03-25 07:54:22,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:54:22,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 07:54:22,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:22,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:54:22,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:54:22,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:22,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:54:22,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:54:22,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:54:22,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/1) ... [2021-03-25 07:54:22,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:54:22,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:54:22,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:54:22,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:54:22,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (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 07:54:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2021-03-25 07:54:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2021-03-25 07:54:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-03-25 07:54:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-03-25 07:54:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:54:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:54:22,279 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:54:22,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:54:22,412 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 07:54:22,413 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:22 BoogieIcfgContainer [2021-03-25 07:54:22,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:54:22,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:54:22,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:54:22,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:54:22,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:22" (1/2) ... [2021-03-25 07:54:22,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f460f5 and model type ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:54:22, skipping insertion in model container [2021-03-25 07:54:22,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:22" (2/2) ... [2021-03-25 07:54:22,419 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest-Safe.bpl [2021-03-25 07:54:22,423 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:54:22,426 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:54:22,427 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:54:22,444 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,444 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,444 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,444 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,445 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,445 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,445 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,445 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,447 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,451 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:22,457 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 07:54:22,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 07:54:22,489 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:54:22,489 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:54:22,489 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:54:22,489 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:54:22,489 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:54:22,489 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:54:22,489 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:54:22,489 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:54:22,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 14 transitions, 44 flow [2021-03-25 07:54:22,512 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 07:54:22,512 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:54:22,513 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. [2021-03-25 07:54:22,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 14 transitions, 44 flow [2021-03-25 07:54:22,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 10 transitions, 32 flow [2021-03-25 07:54:22,517 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:22,525 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 10 transitions, 32 flow [2021-03-25 07:54:22,527 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 10 transitions, 32 flow [2021-03-25 07:54:22,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 10 transitions, 32 flow [2021-03-25 07:54:22,532 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 07:54:22,532 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:54:22,532 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. [2021-03-25 07:54:22,534 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 07:54:22,567 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-25 07:54:22,567 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 07:54:22,568 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-25 07:54:22,576 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 07:54:22,576 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:54:22,576 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:22,577 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:54:22,577 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1428659103, now seen corresponding path program 1 times [2021-03-25 07:54:22,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:22,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988940881] [2021-03-25 07:54:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:22,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:22,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:22,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:22,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:54:22,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:22,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:54:22,724 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 07:54:22,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988940881] [2021-03-25 07:54:22,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:22,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:54:22,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360486665] [2021-03-25 07:54:22,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:54:22,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:22,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:54:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:54:22,750 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 16 [2021-03-25 07:54:22,752 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) [2021-03-25 07:54:22,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:22,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 16 [2021-03-25 07:54:22,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:22,763 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 07:54:22,763 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 07:54:22,766 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. [2021-03-25 07:54:22,767 INFO L132 encePairwiseOnDemand]: 14/16 looper letters, 0 selfloop transitions, 1 changer transitions 0/7 dead transitions. [2021-03-25 07:54:22,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 25 flow [2021-03-25 07:54:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:54:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:54:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2021-03-25 07:54:22,777 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-03-25 07:54:22,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 44 transitions. [2021-03-25 07:54:22,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 44 transitions. [2021-03-25 07:54:22,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:22,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 44 transitions. [2021-03-25 07:54:22,782 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) [2021-03-25 07:54:22,792 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) [2021-03-25 07:54:22,793 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) [2021-03-25 07:54:22,794 INFO L185 Difference]: Start difference. First operand has 14 places, 8 transitions, 28 flow. Second operand 3 states and 44 transitions. [2021-03-25 07:54:22,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 25 flow [2021-03-25 07:54:22,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 7 transitions, 20 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 07:54:22,799 INFO L241 Difference]: Finished difference. Result has 13 places, 7 transitions, 20 flow [2021-03-25 07:54:22,800 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} [2021-03-25 07:54:22,801 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -1 predicate places. [2021-03-25 07:54:22,801 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:22,801 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 7 transitions, 20 flow [2021-03-25 07:54:22,802 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 7 transitions, 20 flow [2021-03-25 07:54:22,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 7 transitions, 20 flow [2021-03-25 07:54:22,815 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 07:54:22,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:22,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 07:54:22,815 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 07:54:22,816 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:22,816 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:22,816 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-25 07:54:22,817 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 7 transitions, 20 flow [2021-03-25 07:54:22,817 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) [2021-03-25 07:54:22,817 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:54:22,818 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:54:22,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:54:22,818 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:54:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:54:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1428660095, now seen corresponding path program 1 times [2021-03-25 07:54:22,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:54:22,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160901004] [2021-03-25 07:54:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:54:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:54:22,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:22,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:54:22,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:22,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:54:22,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:54:22,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:54:22,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 07:54:22,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:54:22,940 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 07:54:22,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160901004] [2021-03-25 07:54:22,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:54:22,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 07:54:22,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370930506] [2021-03-25 07:54:22,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 07:54:22,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:54:22,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 07:54:22,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 07:54:22,951 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 16 [2021-03-25 07:54:22,952 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) [2021-03-25 07:54:22,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:54:22,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 16 [2021-03-25 07:54:22,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:54:23,016 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-25 07:54:23,016 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:54:23,017 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. [2021-03-25 07:54:23,017 INFO L132 encePairwiseOnDemand]: 11/16 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-25 07:54:23,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 7 transitions, 36 flow [2021-03-25 07:54:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 07:54:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 07:54:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2021-03-25 07:54:23,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2021-03-25 07:54:23,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 49 transitions. [2021-03-25 07:54:23,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 49 transitions. [2021-03-25 07:54:23,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:54:23,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 49 transitions. [2021-03-25 07:54:23,022 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) [2021-03-25 07:54:23,025 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) [2021-03-25 07:54:23,025 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) [2021-03-25 07:54:23,026 INFO L185 Difference]: Start difference. First operand has 13 places, 7 transitions, 20 flow. Second operand 6 states and 49 transitions. [2021-03-25 07:54:23,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 7 transitions, 36 flow [2021-03-25 07:54:23,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 7 transitions, 34 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:54:23,029 INFO L241 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2021-03-25 07:54:23,029 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} [2021-03-25 07:54:23,030 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 2 predicate places. [2021-03-25 07:54:23,030 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:23,030 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 0 transitions, 0 flow [2021-03-25 07:54:23,031 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 0 transitions, 0 flow [2021-03-25 07:54:23,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:54:23,031 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:54:23,031 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:23,032 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 07:54:23,032 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:54:23,032 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:23,032 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:23,032 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 07:54:23,033 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 07:54:23,033 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) [2021-03-25 07:54:23,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:54:23,036 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:54:23 BasicIcfg [2021-03-25 07:54:23,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:54:23,037 INFO L168 Benchmark]: Toolchain (without parser) took 845.57 ms. Allocated memory is still 255.9 MB. Free memory was 237.1 MB in the beginning and 195.9 MB in the end (delta: 41.1 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:23,039 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:23,040 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 255.9 MB. Free memory was 237.0 MB in the beginning and 235.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:23,044 INFO L168 Benchmark]: Boogie Preprocessor took 12.53 ms. Allocated memory is still 255.9 MB. Free memory was 235.5 MB in the beginning and 234.6 MB in the end (delta: 916.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:23,045 INFO L168 Benchmark]: RCFGBuilder took 183.18 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 241.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:23,045 INFO L168 Benchmark]: TraceAbstraction took 621.46 ms. Allocated memory is still 255.9 MB. Free memory was 240.8 MB in the beginning and 195.9 MB in the end (delta: 44.8 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:23,047 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 0.20 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 255.9 MB. Free memory was 237.0 MB in the beginning and 235.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.53 ms. Allocated memory is still 255.9 MB. Free memory was 235.5 MB in the beginning and 234.6 MB in the end (delta: 916.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 183.18 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 241.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 621.46 ms. Allocated memory is still 255.9 MB. Free memory was 240.8 MB in the beginning and 195.9 MB in the end (delta: 44.8 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.4ms, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.6ms, 13 PlacesBefore, 13 PlacesAfterwards, 7 TransitionsBefore, 7 TransitionsAfterwards, 8 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: 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] , 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, 16 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: 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] , 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: 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: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 548.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 136.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 82.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 8 SDslu, 3 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.3ms 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: 3.5ms SsaConstructionTime, 25.3ms SatisfiabilityAnalysisTime, 182.3ms 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...