/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample-2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-?-9ecb849-m [2024-02-09 23:24:34,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-09 23:24:34,768 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2024-02-09 23:24:34,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-09 23:24:34,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-09 23:24:34,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.Only consider context switches at boundaries of atomic blocks [2024-02-09 23:24:34,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-09 23:24:34,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-09 23:24:34,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-09 23:24:34,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-09 23:24:34,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-09 23:24:34,802 INFO L153 SettingsManager]: * Use SBE=true [2024-02-09 23:24:34,802 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-09 23:24:34,803 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-09 23:24:34,803 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-09 23:24:34,803 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-09 23:24:34,804 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-09 23:24:34,804 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-09 23:24:34,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-09 23:24:34,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-09 23:24:34,805 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-09 23:24:34,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-09 23:24:34,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-09 23:24:34,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-09 23:24:34,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-09 23:24:34,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-09 23:24:34,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-09 23:24:34,808 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-09 23:24:34,808 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-09 23:24:34,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-09 23:24:34,809 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-09 23:24:34,809 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-09 23:24:34,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-09 23:24:34,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-09 23:24:34,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-09 23:24:34,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-09 23:24:34,811 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-09 23:24:34,811 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-09 23:24:34,812 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2024-02-09 23:24:35,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-09 23:24:35,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-09 23:24:35,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-09 23:24:35,168 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2024-02-09 23:24:35,169 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2024-02-09 23:24:35,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample-2.bpl [2024-02-09 23:24:35,171 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/min-max-sample-2.bpl' [2024-02-09 23:24:35,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-09 23:24:35,212 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-02-09 23:24:35,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-09 23:24:35,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-09 23:24:35,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-09 23:24:35,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,236 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-02-09 23:24:35,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-09 23:24:35,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-09 23:24:35,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-09 23:24:35,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-09 23:24:35,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-09 23:24:35,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-09 23:24:35,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-09 23:24:35,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-09 23:24:35,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/1) ... [2024-02-09 23:24:35,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 23:24:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 23:24:35,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-09 23:24:35,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-02-09 23:24:35,412 INFO L124 BoogieDeclarations]: Specification and implementation of procedure computeMax given in one single declaration [2024-02-09 23:24:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure computeMax [2024-02-09 23:24:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure computeMax [2024-02-09 23:24:35,413 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2024-02-09 23:24:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-09 23:24:35,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-09 23:24:35,413 INFO L124 BoogieDeclarations]: Specification and implementation of procedure sample given in one single declaration [2024-02-09 23:24:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure sample [2024-02-09 23:24:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure sample [2024-02-09 23:24:35,414 INFO L124 BoogieDeclarations]: Specification and implementation of procedure computeMin given in one single declaration [2024-02-09 23:24:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure computeMin [2024-02-09 23:24:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure computeMin [2024-02-09 23:24:35,415 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-09 23:24:35,475 INFO L236 CfgBuilder]: Building ICFG [2024-02-09 23:24:35,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-09 23:24:35,627 INFO L277 CfgBuilder]: Performing block encoding [2024-02-09 23:24:35,634 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-09 23:24:35,634 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-09 23:24:35,640 INFO L201 PluginConnector]: Adding new model min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:24:35 BoogieIcfgContainer [2024-02-09 23:24:35,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-09 23:24:35,643 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-09 23:24:35,643 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-09 23:24:35,647 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-09 23:24:35,648 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:24:35,648 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:24:35" (1/2) ... [2024-02-09 23:24:35,651 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34b98cfa and model type min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 11:24:35, skipping insertion in model container [2024-02-09 23:24:35,651 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:24:35,651 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:24:35" (2/2) ... [2024-02-09 23:24:35,653 INFO L332 chiAutomizerObserver]: Analyzing ICFG min-max-sample-2.bpl [2024-02-09 23:24:35,759 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-09 23:24:35,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 82 flow [2024-02-09 23:24:35,824 INFO L124 PetriNetUnfolderBase]: 3/26 cut-off events. [2024-02-09 23:24:35,825 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-09 23:24:35,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 26 events. 3/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-02-09 23:24:35,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 32 transitions, 82 flow [2024-02-09 23:24:35,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 67 flow [2024-02-09 23:24:35,851 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-09 23:24:35,851 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-09 23:24:35,851 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-09 23:24:35,851 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-09 23:24:35,852 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-09 23:24:35,852 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-09 23:24:35,852 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-09 23:24:35,853 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-02-09 23:24:35,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2024-02-09 23:24:35,962 INFO L131 ngComponentsAnalysis]: Automaton has 54 accepting balls. 192 [2024-02-09 23:24:35,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 23:24:35,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 23:24:35,967 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-02-09 23:24:35,968 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 23:24:35,968 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-02-09 23:24:35,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 237 states, but on-demand construction may add more states [2024-02-09 23:24:35,980 INFO L131 ngComponentsAnalysis]: Automaton has 54 accepting balls. 192 [2024-02-09 23:24:35,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 23:24:35,980 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 23:24:35,981 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-02-09 23:24:35,981 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 23:24:35,986 INFO L748 eck$LassoCheckResult]: Stem: 39#[$Ultimate##0]don't care [56] $Ultimate##0-->L70: Formula: (and (<= 0 v_ULTIMATE.start_m_3) (< v_ULTIMATE.start_m_3 v_N_3)) InVars {ULTIMATE.start_m=v_ULTIMATE.start_m_3, N=v_N_3} OutVars{ULTIMATE.start_m=v_ULTIMATE.start_m_3, N=v_N_3} AuxVars[] AssignedVars[] 42#[L70]don't care [82] L70-->$Ultimate##0: Formula: (= v_computeMinThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{computeMinThread1of1ForFork0_thidvar0=v_computeMinThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[computeMinThread1of1ForFork0_thidvar0] 44#[$Ultimate##0, L70-1]don't care [85] L70-1-->$Ultimate##0: Formula: (and (= v_computeMaxThread1of1ForFork1_thidvar0_2 2) (= v_computeMaxThread1of1ForFork1_thidvar1_2 2)) InVars {} OutVars{computeMaxThread1of1ForFork1_thidvar0=v_computeMaxThread1of1ForFork1_thidvar0_2, computeMaxThread1of1ForFork1_thidvar1=v_computeMaxThread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[computeMaxThread1of1ForFork1_thidvar0, computeMaxThread1of1ForFork1_thidvar1] 46#[$Ultimate##0, $Ultimate##0, L71]don't care [88] L71-->L57: Formula: (and (= v_sampleThread1of1ForFork2_thidvar0_2 3) (= v_sampleThread1of1ForFork2_thidvar2_2 3) (= v_sampleThread1of1ForFork2_thidvar1_2 3)) InVars {} OutVars{sampleThread1of1ForFork2_thidvar0=v_sampleThread1of1ForFork2_thidvar0_2, sampleThread1of1ForFork2_thidvar2=v_sampleThread1of1ForFork2_thidvar2_2, sampleThread1of1ForFork2_thidvar1=v_sampleThread1of1ForFork2_thidvar1_2} AuxVars[] AssignedVars[sampleThread1of1ForFork2_thidvar0, sampleThread1of1ForFork2_thidvar2, sampleThread1of1ForFork2_thidvar1] 50#[L72, L57, $Ultimate##0, $Ultimate##0]don't care [2024-02-09 23:24:35,987 INFO L750 eck$LassoCheckResult]: Loop: 50#[L72, L57, $Ultimate##0, $Ultimate##0]don't care [71] L57-->L59: Formula: (= v_min_samples_1 (store v_min_samples_2 (+ (- 1) v_i1_1) v_array_min_3)) InVars {min_samples=v_min_samples_2, i1=v_i1_1, array_min=v_array_min_3} OutVars{min_samples=v_min_samples_1, i1=v_i1_1, array_min=v_array_min_3} AuxVars[] AssignedVars[min_samples] 60#[L72, $Ultimate##0, $Ultimate##0, L59]don't care [72] L59-->L57: Formula: (= (store v_max_samples_2 (+ (- 1) v_i2_7) v_array_max_6) v_max_samples_1) InVars {i2=v_i2_7, array_max=v_array_max_6, max_samples=v_max_samples_2} OutVars{i2=v_i2_7, array_max=v_array_max_6, max_samples=v_max_samples_1} AuxVars[] AssignedVars[max_samples] 50#[L72, L57, $Ultimate##0, $Ultimate##0]don't care [2024-02-09 23:24:35,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:24:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2673342, now seen corresponding path program 1 times [2024-02-09 23:24:36,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:24:36,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253296750] [2024-02-09 23:24:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:24:36,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:24:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:24:36,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:24:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:24:36,103 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:24:36,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:24:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 3234, now seen corresponding path program 1 times [2024-02-09 23:24:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:24:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600345360] [2024-02-09 23:24:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:24:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:24:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:24:36,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:24:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:24:36,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:24:36,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:24:36,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1725883361, now seen corresponding path program 1 times [2024-02-09 23:24:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:24:36,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503762583] [2024-02-09 23:24:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:24:36,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:24:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:24:36,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:24:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:24:36,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:24:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:24:36,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:24:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:24:36,362 INFO L201 PluginConnector]: Adding new model min-max-sample-2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.02 11:24:36 BoogieIcfgContainer [2024-02-09 23:24:36,362 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-02-09 23:24:36,364 INFO L158 Benchmark]: Toolchain (without parser) took 1151.74ms. Allocated memory is still 169.9MB. Free memory was 107.4MB in the beginning and 98.5MB in the end (delta: 8.9MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2024-02-09 23:24:36,365 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 169.9MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 8.0GB. [2024-02-09 23:24:36,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.56ms. Allocated memory is still 169.9MB. Free memory was 107.1MB in the beginning and 105.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-02-09 23:24:36,366 INFO L158 Benchmark]: Boogie Preprocessor took 46.42ms. Allocated memory is still 169.9MB. Free memory was 105.6MB in the beginning and 140.7MB in the end (delta: -35.0MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2024-02-09 23:24:36,367 INFO L158 Benchmark]: RCFGBuilder took 355.75ms. Allocated memory is still 169.9MB. Free memory was 140.5MB in the beginning and 130.5MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2024-02-09 23:24:36,367 INFO L158 Benchmark]: BuchiAutomizer took 719.36ms. Allocated memory is still 169.9MB. Free memory was 130.5MB in the beginning and 98.5MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2024-02-09 23:24:36,370 INFO L338 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 0.13ms. Allocated memory is still 169.9MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.56ms. Allocated memory is still 169.9MB. Free memory was 107.1MB in the beginning and 105.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.42ms. Allocated memory is still 169.9MB. Free memory was 105.6MB in the beginning and 140.7MB in the end (delta: -35.0MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * RCFGBuilder took 355.75ms. Allocated memory is still 169.9MB. Free memory was 140.5MB in the beginning and 130.5MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 719.36ms. Allocated memory is still 169.9MB. Free memory was 130.5MB in the beginning and 98.5MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 57]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L68] 0 assume 0 <= m && m < N; VAL [N=1, m=0] [L70] FORK 0 fork 1 computeMin(); VAL [N=1, m=0] [L71] FORK 0 fork 2, 2 computeMax(); VAL [N=1, m=0] [L72] FORK 0 fork 3, 3, 3 sample(); VAL [N=1, m=0] Loop: [L58] min_samples[i1 - 1] := array_min; [L59] max_samples[i2 - 1] := array_max; End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 57]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L68] 0 assume 0 <= m && m < N; VAL [N=1, m=0] [L70] FORK 0 fork 1 computeMin(); VAL [N=1, m=0] [L71] FORK 0 fork 2, 2 computeMax(); VAL [N=1, m=0] [L72] FORK 0 fork 3, 3, 3 sample(); VAL [N=1, m=0] Loop: [L58] min_samples[i1 - 1] := array_min; [L59] max_samples[i2 - 1] := array_max; End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-02-09 23:24:36,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...