/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:22:07,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:22:07,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:22:07,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 13:22:07,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 13:22:07,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 13:22:07,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 13:22:08,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 13:22:08,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 13:22:08,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 13:22:08,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 13:22:08,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 13:22:08,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 13:22:08,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 13:22:08,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 13:22:08,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 13:22:08,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 13:22:08,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 13:22:08,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 13:22:08,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 13:22:08,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 13:22:08,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 13:22:08,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 13:22:08,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 13:22:08,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 13:22:08,053 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:22:08,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:22:08,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:22:08,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:22:08,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:22:08,092 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:22:08,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:22:08,092 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:22:08,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:22:08,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:22:08,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:22:08,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:22:08,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:22:08,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:22:08,094 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:22:08,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:22:08,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:22:08,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:22:08,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:22:08,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:22:08,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:22:08,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:22:08,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:22:08,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:22:08,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:22:08,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:22:08,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:22:08,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:22:08,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:22:08,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:22:08,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:22:08,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:22:08,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:22:08,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:22:08,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:22:08,425 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 13:22:08,425 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 13:22:08,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl [2021-03-26 13:22:08,427 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl' [2021-03-26 13:22:08,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:22:08,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 13:22:08,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:22:08,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:22:08,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:22:08,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:22:08,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:22:08,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:22:08,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:22:08,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/1) ... [2021-03-26 13:22:08,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:22:08,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:22:08,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:22:08,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:22:08,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (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 [2021-03-26 13:22:08,565 INFO L124 BoogieDeclarations]: Specification and implementation of procedure increment given in one single declaration [2021-03-26 13:22:08,566 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-03-26 13:22:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-03-26 13:22:08,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 13:22:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:22:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:22:08,567 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:22:08,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:22:08,668 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 13:22:08,669 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:22:08 BoogieIcfgContainer [2021-03-26 13:22:08,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:22:08,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:22:08,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:22:08,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:22:08,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:08" (1/2) ... [2021-03-26 13:22:08,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101e5eab and model type multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:22:08, skipping insertion in model container [2021-03-26 13:22:08,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:22:08" (2/2) ... [2021-03-26 13:22:08,689 INFO L111 eAbstractionObserver]: Analyzing ICFG multiple_fork_same_id.bpl [2021-03-26 13:22:08,693 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:22:08,696 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:22:08,697 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:22:08,716 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,716 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,716 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,716 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,717 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,717 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,717 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,717 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,718 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,718 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,718 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,718 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,720 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,724 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,726 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:08,733 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-26 13:22:08,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 13:22:08,765 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:22:08,765 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:22:08,765 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:22:08,765 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:22:08,766 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:22:08,766 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:22:08,766 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:22:08,766 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:22:08,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 18 transitions, 60 flow [2021-03-26 13:22:08,791 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 13:22:08,791 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 13:22:08,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 0/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 46 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 13:22:08,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 18 transitions, 60 flow [2021-03-26 13:22:08,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 13 transitions, 44 flow [2021-03-26 13:22:08,797 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:08,808 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 13 transitions, 44 flow [2021-03-26 13:22:08,811 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 13 transitions, 44 flow [2021-03-26 13:22:08,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 13 transitions, 44 flow [2021-03-26 13:22:08,817 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 13:22:08,817 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 13:22:08,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 15 events. 0/15 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 13:22:08,818 INFO L142 LiptonReduction]: Number of co-enabled transitions 72 [2021-03-26 13:22:08,866 INFO L154 LiptonReduction]: Checked pairs total: 24 [2021-03-26 13:22:08,866 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:22:08,868 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 72 [2021-03-26 13:22:08,876 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-26 13:22:08,876 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 13:22:08,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:08,877 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 13:22:08,877 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:08,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1636388891, now seen corresponding path program 1 times [2021-03-26 13:22:08,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:08,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924858053] [2021-03-26 13:22:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:09,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:09,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:22:09,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:09,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:22:09,041 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 13:22:09,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:22:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:09,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924858053] [2021-03-26 13:22:09,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:09,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:22:09,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789388690] [2021-03-26 13:22:09,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 13:22:09,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:09,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 13:22:09,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 13:22:09,095 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 21 [2021-03-26 13:22:09,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 10 transitions, 38 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-03-26 13:22:09,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:09,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 21 [2021-03-26 13:22:09,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:09,198 INFO L129 PetriNetUnfolder]: 4/19 cut-off events. [2021-03-26 13:22:09,198 INFO L130 PetriNetUnfolder]: For 16/17 co-relation queries the response was YES. [2021-03-26 13:22:09,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 19 events. 4/19 cut-off events. For 16/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 2/21 useless extension candidates. Maximal degree in co-relation 38. Up to 9 conditions per place. [2021-03-26 13:22:09,201 INFO L132 encePairwiseOnDemand]: 17/21 looper letters, 6 selfloop transitions, 2 changer transitions 1/13 dead transitions. [2021-03-26 13:22:09,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 13 transitions, 68 flow [2021-03-26 13:22:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 13:22:09,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 13:22:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-03-26 13:22:09,211 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-03-26 13:22:09,212 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-03-26 13:22:09,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-03-26 13:22:09,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:09,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-03-26 13:22:09,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-26 13:22:09,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2021-03-26 13:22:09,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2021-03-26 13:22:09,225 INFO L185 Difference]: Start difference. First operand has 18 places, 10 transitions, 38 flow. Second operand 5 states and 75 transitions. [2021-03-26 13:22:09,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 13 transitions, 68 flow [2021-03-26 13:22:09,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 13 transitions, 52 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-26 13:22:09,231 INFO L241 Difference]: Finished difference. Result has 17 places, 9 transitions, 29 flow [2021-03-26 13:22:09,232 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=29, PETRI_PLACES=17, PETRI_TRANSITIONS=9} [2021-03-26 13:22:09,235 INFO L343 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2021-03-26 13:22:09,236 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:09,236 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 9 transitions, 29 flow [2021-03-26 13:22:09,236 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 9 transitions, 29 flow [2021-03-26 13:22:09,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 9 transitions, 29 flow [2021-03-26 13:22:09,242 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 13:22:09,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:22:09,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 13:22:09,243 INFO L142 LiptonReduction]: Number of co-enabled transitions 26 [2021-03-26 13:22:09,244 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:09,244 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:22:09,245 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 13:22:09,248 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 9 transitions, 29 flow [2021-03-26 13:22:09,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-03-26 13:22:09,249 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:09,249 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 13:22:09,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:22:09,249 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:09,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1629179500, now seen corresponding path program 1 times [2021-03-26 13:22:09,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:09,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058249725] [2021-03-26 13:22:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 13:22:09,267 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 13:22:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 13:22:09,271 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 13:22:09,289 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 13:22:09,289 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 13:22:09,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 13:22:09,301 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 01:22:09 BasicIcfg [2021-03-26 13:22:09,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 13:22:09,303 INFO L168 Benchmark]: Toolchain (without parser) took 846.97 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 201.3 MB in the end (delta: 35.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.0 GB. [2021-03-26 13:22:09,304 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.56 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 90.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 13:22:09,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.68 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 13:22:09,308 INFO L168 Benchmark]: Boogie Preprocessor took 9.73 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.3 MB in the end (delta: 811.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 13:22:09,310 INFO L168 Benchmark]: RCFGBuilder took 176.86 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 226.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-26 13:22:09,313 INFO L168 Benchmark]: TraceAbstraction took 631.76 ms. Allocated memory is still 255.9 MB. Free memory was 225.9 MB in the beginning and 201.3 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.0 GB. [2021-03-26 13:22:09,321 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 0.56 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 90.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.68 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.73 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.3 MB in the end (delta: 811.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 176.86 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 226.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 631.76 ms. Allocated memory is still 255.9 MB. Free memory was 225.9 MB in the beginning and 201.3 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.1ms, 21 PlacesBefore, 18 PlacesAfterwards, 13 TransitionsBefore, 10 TransitionsAfterwards, 72 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 24 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5ms, 17 PlacesBefore, 16 PlacesAfterwards, 9 TransitionsBefore, 9 TransitionsAfterwards, 26 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L19] FORK 0 fork 42 increment(7); VAL [n=7] [L20] FORK 0 fork 42 increment(23); VAL [n=7] [L34] 2 res := n + 1; [L21] FORK 0 fork 42 increment(39); VAL [n=39, res=24] [L24] JOIN 2 join 42 assign x; VAL [n=39, res=24, x=24] [L28] 0 assert x == 8 || x == 40; VAL [n=39, res=24, x=24] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 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: UNSAFE, OverallTime: 529.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 155.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 106.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 9 SDslu, 4 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 3.7ms SsaConstructionTime, 17.6ms SatisfiabilityAnalysisTime, 108.9ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...