/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:50:45,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:50:45,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:50:45,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:50:45,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:50:45,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:50:45,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:50:45,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:50:45,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:50:45,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:50:45,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:50:45,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:50:45,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:50:45,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:50:45,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:50:45,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:50:45,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:50:45,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:50:45,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:50:45,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:50:45,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:50:45,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:50:45,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:50:45,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:50:45,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 14:50:45,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 14:50:45,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 14:50:45,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 14:50:45,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 14:50:45,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 14:50:45,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 14:50:45,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 14:50:45,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 14:50:45,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:50:45,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:50:45,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:50:45,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 14:50:45,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:50:45,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:50:45,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:50:45,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:50:45,622 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:50:45,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:50:45,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:50:45,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:50:45,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:50:45,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:50:45,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:50:45,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:50:45,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:50:45,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:50:45,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:50:45,624 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:50:45,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:50:45,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:50:45,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:50:45,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:50:45,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:50:45,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:50:45,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:50:45,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:50:45,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:50:45,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:50:45,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:50:45,626 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:50:45,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:50:45,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:50:45,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:50:45,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:50:45,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:50:45,903 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:50:45,903 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:50:45,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl [2021-06-10 14:50:45,904 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl' [2021-06-10 14:50:45,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:50:45,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:50:45,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:50:45,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:50:45,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:50:45,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:50:45,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:50:45,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:50:45,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:50:45,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... [2021-06-10 14:50:45,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:50:45,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:50:45,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:50:45,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:50:45,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:50:46,028 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-10 14:50:46,028 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-10 14:50:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-10 14:50:46,030 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-10 14:50:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-10 14:50:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-10 14:50:46,030 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-10 14:50:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-10 14:50:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-10 14:50:46,030 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:50:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:50:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:50:46,031 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:50:46,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:50:46,124 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 14:50:46,125 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:50:46 BoogieIcfgContainer [2021-06-10 14:50:46,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:50:46,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:50:46,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:50:46,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:50:46,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:50:45" (1/2) ... [2021-06-10 14:50:46,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24998dc5 and model type example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:50:46, skipping insertion in model container [2021-06-10 14:50:46,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:50:46" (2/2) ... [2021-06-10 14:50:46,130 INFO L111 eAbstractionObserver]: Analyzing ICFG example_3.bpl [2021-06-10 14:50:46,134 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:50:46,137 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 14:50:46,137 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:50:46,167 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-06-10 14:50:46,180 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 14:50:46,195 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:50:46,195 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:50:46,195 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:50:46,195 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:50:46,195 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:50:46,195 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:50:46,195 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:50:46,195 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:50:46,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 90 flow [2021-06-10 14:50:46,218 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-06-10 14:50:46,218 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-10 14:50:46,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 24 events. 5/24 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2021-06-10 14:50:46,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 90 flow [2021-06-10 14:50:46,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 74 flow [2021-06-10 14:50:46,243 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2021-06-10 14:50:46,244 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-10 14:50:46,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:50:46,245 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:50:46,245 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:50:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:50:46,249 INFO L82 PathProgramCache]: Analyzing trace with hash -112730291, now seen corresponding path program 1 times [2021-06-10 14:50:46,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:50:46,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590606729] [2021-06-10 14:50:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:50:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:50:46,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:50:46,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:50:46,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:50:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:50:46,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590606729] [2021-06-10 14:50:46,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:50:46,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:50:46,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306107241] [2021-06-10 14:50:46,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:50:46,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:50:46,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:50:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:50:46,401 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 24 [2021-06-10 14:50:46,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:50:46,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 24 [2021-06-10 14:50:46,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:50:46,415 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2021-06-10 14:50:46,415 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-06-10 14:50:46,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 15 events. 1/15 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 3/18 useless extension candidates. Maximal degree in co-relation 14. Up to 3 conditions per place. [2021-06-10 14:50:46,416 INFO L132 encePairwiseOnDemand]: 21/24 looper letters, 1 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2021-06-10 14:50:46,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 15 transitions, 58 flow [2021-06-10 14:50:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:50:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:50:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2021-06-10 14:50:46,424 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-06-10 14:50:46,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2021-06-10 14:50:46,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2021-06-10 14:50:46,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:50:46,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2021-06-10 14:50:46,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-06-10 14:50:46,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,432 INFO L185 Difference]: Start difference. First operand has 23 places, 19 transitions, 74 flow. Second operand 3 states and 64 transitions. [2021-06-10 14:50:46,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 15 transitions, 58 flow [2021-06-10 14:50:46,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 42 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-06-10 14:50:46,436 INFO L241 Difference]: Finished difference. Result has 19 places, 15 transitions, 40 flow [2021-06-10 14:50:46,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2021-06-10 14:50:46,438 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, -4 predicate places. [2021-06-10 14:50:46,438 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 40 flow [2021-06-10 14:50:46,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,438 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:50:46,438 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:50:46,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:50:46,439 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:50:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:50:46,439 INFO L82 PathProgramCache]: Analyzing trace with hash -708234035, now seen corresponding path program 1 times [2021-06-10 14:50:46,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:50:46,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146804331] [2021-06-10 14:50:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:50:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:50:46,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:50:46,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:50:46,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:50:46,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:50:46,499 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-10 14:50:46,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 14:50:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:50:46,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146804331] [2021-06-10 14:50:46,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:50:46,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:50:46,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293780904] [2021-06-10 14:50:46,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 14:50:46,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:50:46,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 14:50:46,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 14:50:46,527 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-06-10 14:50:46,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 40 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:50:46,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-06-10 14:50:46,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:50:46,569 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-06-10 14:50:46,570 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:50:46,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 144 event pairs, 1 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 55. Up to 7 conditions per place. [2021-06-10 14:50:46,570 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 5 selfloop transitions, 2 changer transitions 1/19 dead transitions. [2021-06-10 14:50:46,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 64 flow [2021-06-10 14:50:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:50:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:50:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-06-10 14:50:46,574 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-06-10 14:50:46,574 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:50:46,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,576 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,576 INFO L185 Difference]: Start difference. First operand has 19 places, 15 transitions, 40 flow. Second operand 5 states and 104 transitions. [2021-06-10 14:50:46,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 64 flow [2021-06-10 14:50:46,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:50:46,578 INFO L241 Difference]: Finished difference. Result has 25 places, 16 transitions, 54 flow [2021-06-10 14:50:46,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2021-06-10 14:50:46,578 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-06-10 14:50:46,578 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 54 flow [2021-06-10 14:50:46,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:50:46,579 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:50:46,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 14:50:46,579 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:50:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:50:46,579 INFO L82 PathProgramCache]: Analyzing trace with hash 915521609, now seen corresponding path program 2 times [2021-06-10 14:50:46,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:50:46,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730262810] [2021-06-10 14:50:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:50:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:50:46,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:50:46,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:50:46,624 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:50:46,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:50:46,636 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-10 14:50:46,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 14:50:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:50:46,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730262810] [2021-06-10 14:50:46,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:50:46,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:50:46,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729857671] [2021-06-10 14:50:46,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 14:50:46,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:50:46,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 14:50:46,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 14:50:46,649 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-06-10 14:50:46,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:50:46,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-06-10 14:50:46,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:50:46,678 INFO L129 PetriNetUnfolder]: 5/51 cut-off events. [2021-06-10 14:50:46,679 INFO L130 PetriNetUnfolder]: For 25/28 co-relation queries the response was YES. [2021-06-10 14:50:46,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 51 events. 5/51 cut-off events. For 25/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 221 event pairs, 1 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 82. Up to 8 conditions per place. [2021-06-10 14:50:46,680 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 5 selfloop transitions, 3 changer transitions 1/20 dead transitions. [2021-06-10 14:50:46,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 90 flow [2021-06-10 14:50:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:50:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:50:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-06-10 14:50:46,681 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-06-10 14:50:46,681 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:50:46,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,683 INFO L185 Difference]: Start difference. First operand has 25 places, 16 transitions, 54 flow. Second operand 5 states and 104 transitions. [2021-06-10 14:50:46,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 90 flow [2021-06-10 14:50:46,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 83 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-10 14:50:46,685 INFO L241 Difference]: Finished difference. Result has 29 places, 17 transitions, 71 flow [2021-06-10 14:50:46,685 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=71, PETRI_PLACES=29, PETRI_TRANSITIONS=17} [2021-06-10 14:50:46,685 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2021-06-10 14:50:46,685 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 17 transitions, 71 flow [2021-06-10 14:50:46,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,685 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:50:46,686 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:50:46,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 14:50:46,686 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:50:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:50:46,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1195756383, now seen corresponding path program 3 times [2021-06-10 14:50:46,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:50:46,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197940706] [2021-06-10 14:50:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:50:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:50:46,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:50:46,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:50:46,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:50:46,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:50:46,726 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-10 14:50:46,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 14:50:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:50:46,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197940706] [2021-06-10 14:50:46,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:50:46,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:50:46,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843015939] [2021-06-10 14:50:46,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 14:50:46,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:50:46,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 14:50:46,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 14:50:46,738 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-06-10 14:50:46,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 17 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:50:46,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-06-10 14:50:46,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:50:46,765 INFO L129 PetriNetUnfolder]: 5/47 cut-off events. [2021-06-10 14:50:46,765 INFO L130 PetriNetUnfolder]: For 43/46 co-relation queries the response was YES. [2021-06-10 14:50:46,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 47 events. 5/47 cut-off events. For 43/46 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 193 event pairs, 0 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2021-06-10 14:50:46,766 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 5 selfloop transitions, 3 changer transitions 3/22 dead transitions. [2021-06-10 14:50:46,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 125 flow [2021-06-10 14:50:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:50:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:50:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-06-10 14:50:46,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-06-10 14:50:46,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:50:46,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,768 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,769 INFO L185 Difference]: Start difference. First operand has 29 places, 17 transitions, 71 flow. Second operand 5 states and 104 transitions. [2021-06-10 14:50:46,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 125 flow [2021-06-10 14:50:46,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 115 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-06-10 14:50:46,770 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 81 flow [2021-06-10 14:50:46,770 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2021-06-10 14:50:46,771 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 10 predicate places. [2021-06-10 14:50:46,771 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 81 flow [2021-06-10 14:50:46,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:50:46,771 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:50:46,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 14:50:46,771 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:50:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:50:46,772 INFO L82 PathProgramCache]: Analyzing trace with hash -826568589, now seen corresponding path program 4 times [2021-06-10 14:50:46,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:50:46,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012208809] [2021-06-10 14:50:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:50:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:50:46,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:50:46,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:50:46,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:50:46,804 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-10 14:50:46,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 14:50:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:50:46,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012208809] [2021-06-10 14:50:46,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:50:46,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:50:46,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210586470] [2021-06-10 14:50:46,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 14:50:46,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:50:46,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 14:50:46,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 14:50:46,815 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-06-10 14:50:46,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:50:46,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-06-10 14:50:46,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:50:46,846 INFO L129 PetriNetUnfolder]: 4/43 cut-off events. [2021-06-10 14:50:46,847 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2021-06-10 14:50:46,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 43 events. 4/43 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 150 event pairs, 0 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2021-06-10 14:50:46,847 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 5 selfloop transitions, 2 changer transitions 3/21 dead transitions. [2021-06-10 14:50:46,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 21 transitions, 135 flow [2021-06-10 14:50:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:50:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:50:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-06-10 14:50:46,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-06-10 14:50:46,849 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:50:46,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-06-10 14:50:46,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,850 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,850 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 81 flow. Second operand 5 states and 104 transitions. [2021-06-10 14:50:46,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 21 transitions, 135 flow [2021-06-10 14:50:46,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 117 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:50:46,852 INFO L241 Difference]: Finished difference. Result has 35 places, 17 transitions, 84 flow [2021-06-10 14:50:46,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2021-06-10 14:50:46,852 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2021-06-10 14:50:46,852 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 84 flow [2021-06-10 14:50:46,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,852 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:50:46,852 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:50:46,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 14:50:46,853 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:50:46,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:50:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1980678821, now seen corresponding path program 5 times [2021-06-10 14:50:46,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:50:46,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704746872] [2021-06-10 14:50:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:50:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:50:46,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:50:46,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:50:46,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:50:46,884 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-10 14:50:46,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 14:50:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:50:46,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704746872] [2021-06-10 14:50:46,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:50:46,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:50:46,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163981648] [2021-06-10 14:50:46,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 14:50:46,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:50:46,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 14:50:46,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 14:50:46,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-06-10 14:50:46,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:50:46,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-06-10 14:50:46,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:50:46,922 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-06-10 14:50:46,922 INFO L130 PetriNetUnfolder]: For 55/60 co-relation queries the response was YES. [2021-06-10 14:50:46,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 28 events. 2/28 cut-off events. For 55/60 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 64 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2021-06-10 14:50:46,923 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 3 selfloop transitions, 1 changer transitions 3/18 dead transitions. [2021-06-10 14:50:46,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 18 transitions, 107 flow [2021-06-10 14:50:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:50:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:50:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-06-10 14:50:46,924 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.85 [2021-06-10 14:50:46,924 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-06-10 14:50:46,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-06-10 14:50:46,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:50:46,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-06-10 14:50:46,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,925 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,925 INFO L185 Difference]: Start difference. First operand has 35 places, 17 transitions, 84 flow. Second operand 5 states and 102 transitions. [2021-06-10 14:50:46,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 18 transitions, 107 flow [2021-06-10 14:50:46,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 18 transitions, 95 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-06-10 14:50:46,926 INFO L241 Difference]: Finished difference. Result has 36 places, 15 transitions, 64 flow [2021-06-10 14:50:46,926 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=15} [2021-06-10 14:50:46,927 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 13 predicate places. [2021-06-10 14:50:46,927 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 15 transitions, 64 flow [2021-06-10 14:50:46,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,927 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:50:46,927 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:50:46,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 14:50:46,927 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:50:46,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:50:46,928 INFO L82 PathProgramCache]: Analyzing trace with hash -221005381, now seen corresponding path program 6 times [2021-06-10 14:50:46,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:50:46,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415372212] [2021-06-10 14:50:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:50:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:50:46,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:50:46,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:50:46,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:50:46,947 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:50:46,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:50:46,957 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-10 14:50:46,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 14:50:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:50:46,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415372212] [2021-06-10 14:50:46,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:50:46,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:50:46,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15239743] [2021-06-10 14:50:46,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 14:50:46,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:50:46,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 14:50:46,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 14:50:46,968 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-06-10 14:50:46,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 15 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:50:46,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-06-10 14:50:46,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:50:46,984 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-06-10 14:50:46,984 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-06-10 14:50:46,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 16 events. 1/16 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2021-06-10 14:50:46,984 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2021-06-10 14:50:46,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 15 transitions, 76 flow [2021-06-10 14:50:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 14:50:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 14:50:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2021-06-10 14:50:46,985 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-06-10 14:50:46,985 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 100 transitions. [2021-06-10 14:50:46,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 100 transitions. [2021-06-10 14:50:46,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:50:46,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 100 transitions. [2021-06-10 14:50:46,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,986 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,986 INFO L185 Difference]: Start difference. First operand has 36 places, 15 transitions, 64 flow. Second operand 5 states and 100 transitions. [2021-06-10 14:50:46,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 15 transitions, 76 flow [2021-06-10 14:50:46,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 15 transitions, 60 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-06-10 14:50:46,987 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-06-10 14:50:46,987 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-06-10 14:50:46,987 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2021-06-10 14:50:46,987 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2021-06-10 14:50:46,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:50:46,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 14:50:46,991 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 02:50:46 BasicIcfg [2021-06-10 14:50:46,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 14:50:46,992 INFO L168 Benchmark]: Toolchain (without parser) took 1070.23 ms. Allocated memory is still 446.7 MB. Free memory was 426.1 MB in the beginning and 326.3 MB in the end (delta: 99.9 MB). Peak memory consumption was 101.3 MB. Max. memory is 16.0 GB. [2021-06-10 14:50:46,992 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 446.7 MB. Free memory was 427.2 MB in the beginning and 427.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:50:46,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.96 ms. Allocated memory is still 446.7 MB. Free memory was 426.1 MB in the beginning and 424.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:50:46,993 INFO L168 Benchmark]: Boogie Preprocessor took 10.63 ms. Allocated memory is still 446.7 MB. Free memory was 424.6 MB in the beginning and 423.8 MB in the end (delta: 725.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 14:50:46,993 INFO L168 Benchmark]: RCFGBuilder took 170.22 ms. Allocated memory is still 446.7 MB. Free memory was 423.7 MB in the beginning and 415.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-10 14:50:46,994 INFO L168 Benchmark]: TraceAbstraction took 864.79 ms. Allocated memory is still 446.7 MB. Free memory was 414.5 MB in the beginning and 326.3 MB in the end (delta: 88.2 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.0 GB. [2021-06-10 14:50:46,995 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 0.10 ms. Allocated memory is still 446.7 MB. Free memory was 427.2 MB in the beginning and 427.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.96 ms. Allocated memory is still 446.7 MB. Free memory was 426.1 MB in the beginning and 424.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.63 ms. Allocated memory is still 446.7 MB. Free memory was 424.6 MB in the beginning and 423.8 MB in the end (delta: 725.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 170.22 ms. Allocated memory is still 446.7 MB. Free memory was 423.7 MB in the beginning and 415.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 864.79 ms. Allocated memory is still 446.7 MB. Free memory was 414.5 MB in the beginning and 326.3 MB in the end (delta: 88.2 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 20.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 796.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 254.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 29 SDslu, 15 SDs, 0 SdLazy, 54 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 203.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=5, InterpolantAutomatonStates: 33, 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: 9.0ms SsaConstructionTime, 26.0ms SatisfiabilityAnalysisTime, 332.0ms InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 902 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...