/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-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 02:50:03,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 02:50:03,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 02:50:03,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 02:50:03,524 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-FA-NoLbe-Separate.epf [2021-05-22 02:50:03,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 02:50:03,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 02:50:03,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 02:50:03,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 02:50:03,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 02:50:03,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 02:50:03,566 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 02:50:03,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 02:50:03,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 02:50:03,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 02:50:03,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 02:50:03,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 02:50:03,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 02:50:03,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 02:50:03,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 02:50:03,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 02:50:03,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 02:50:03,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 02:50:03,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 02:50:03,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 02:50:03,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 02:50:03,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 02:50:03,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 02:50:03,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 02:50:03,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 02:50:03,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 02:50:03,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 02:50:03,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 02:50:03,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 02:50:03,569 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 02:50:03,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 02:50:03,570 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 02:50:03,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 02:50:03,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 02:50:03,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 02:50:03,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 02:50:03,872 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-22 02:50:03,873 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-22 02:50:03,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl [2021-05-22 02:50:03,874 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl' [2021-05-22 02:50:03,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 02:50:03,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-22 02:50:03,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 02:50:03,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 02:50:03,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 02:50:03,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 02:50:03,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 02:50:03,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 02:50:03,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 02:50:03,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/1) ... [2021-05-22 02:50:03,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 02:50:03,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 02:50:03,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 02:50:03,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 02:50:03,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (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 [2021-05-22 02:50:04,032 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-22 02:50:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-22 02:50:04,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-22 02:50:04,033 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-22 02:50:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-22 02:50:04,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-22 02:50:04,033 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-22 02:50:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 02:50:04,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 02:50:04,034 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-22 02:50:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-22 02:50:04,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-22 02:50:04,035 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 02:50:04,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 02:50:04,348 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-22 02:50:04,349 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 02:50:04 BoogieIcfgContainer [2021-05-22 02:50:04,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 02:50:04,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 02:50:04,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 02:50:04,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 02:50:04,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 02:50:03" (1/2) ... [2021-05-22 02:50:04,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7251da7e and model type ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 02:50:04, skipping insertion in model container [2021-05-22 02:50:04,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 02:50:04" (2/2) ... [2021-05-22 02:50:04,355 INFO L111 eAbstractionObserver]: Analyzing ICFG ring-nondet.wvr.bpl [2021-05-22 02:50:04,362 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 02:50:04,362 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 02:50:04,362 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 02:50:04,363 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 02:50:04,394 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-22 02:50:04,411 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 02:50:04,427 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 02:50:04,427 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 02:50:04,428 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 02:50:04,428 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 02:50:04,428 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 02:50:04,428 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 02:50:04,428 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 02:50:04,428 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 02:50:04,436 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2021-05-22 02:50:04,471 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 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) [2021-05-22 02:50:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 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) [2021-05-22 02:50:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-22 02:50:04,488 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:50:04,489 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:50:04,489 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:50:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:50:04,499 INFO L82 PathProgramCache]: Analyzing trace with hash -766477116, now seen corresponding path program 1 times [2021-05-22 02:50:04,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:50:04,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541912801] [2021-05-22 02:50:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:50:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:50:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:50:04,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:50:04,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541912801] [2021-05-22 02:50:04,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541912801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:50:04,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:50:04,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 02:50:04,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663452193] [2021-05-22 02:50:04,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:50:04,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:50:04,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:50:04,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:50:04,638 INFO L87 Difference]: Start difference. First operand has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 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) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-05-22 02:50:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:50:04,670 INFO L93 Difference]: Finished difference Result 393 states and 1157 transitions. [2021-05-22 02:50:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:50:04,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) Word has length 16 [2021-05-22 02:50:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:50:04,685 INFO L225 Difference]: With dead ends: 393 [2021-05-22 02:50:04,685 INFO L226 Difference]: Without dead ends: 393 [2021-05-22 02:50:04,687 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:50:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-05-22 02:50:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-05-22 02:50:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 2.951530612244898) internal successors, (1157), 392 states have internal predecessors, (1157), 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) [2021-05-22 02:50:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1157 transitions. [2021-05-22 02:50:04,749 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1157 transitions. Word has length 16 [2021-05-22 02:50:04,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:50:04,750 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 1157 transitions. [2021-05-22 02:50:04,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-05-22 02:50:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1157 transitions. [2021-05-22 02:50:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-22 02:50:04,754 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:50:04,754 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:50:04,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 02:50:04,754 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:50:04,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:50:04,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1760185073, now seen corresponding path program 1 times [2021-05-22 02:50:04,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:50:04,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470296612] [2021-05-22 02:50:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:50:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:50:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:50:04,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:50:04,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470296612] [2021-05-22 02:50:04,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470296612] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:50:04,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:50:04,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 02:50:04,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847418127] [2021-05-22 02:50:04,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:50:04,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:50:04,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:50:04,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:50:04,786 INFO L87 Difference]: Start difference. First operand 393 states and 1157 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-05-22 02:50:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:50:04,813 INFO L93 Difference]: Finished difference Result 442 states and 1303 transitions. [2021-05-22 02:50:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:50:04,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) Word has length 21 [2021-05-22 02:50:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:50:04,821 INFO L225 Difference]: With dead ends: 442 [2021-05-22 02:50:04,821 INFO L226 Difference]: Without dead ends: 442 [2021-05-22 02:50:04,822 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:50:04,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-05-22 02:50:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-05-22 02:50:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 2.9546485260770976) internal successors, (1303), 441 states have internal predecessors, (1303), 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) [2021-05-22 02:50:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1303 transitions. [2021-05-22 02:50:04,871 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1303 transitions. Word has length 21 [2021-05-22 02:50:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:50:04,872 INFO L482 AbstractCegarLoop]: Abstraction has 442 states and 1303 transitions. [2021-05-22 02:50:04,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-05-22 02:50:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1303 transitions. [2021-05-22 02:50:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-22 02:50:04,874 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:50:04,874 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:50:04,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 02:50:04,875 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:50:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:50:04,876 INFO L82 PathProgramCache]: Analyzing trace with hash 992917241, now seen corresponding path program 1 times [2021-05-22 02:50:04,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:50:04,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936748998] [2021-05-22 02:50:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:50:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:50:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 02:50:04,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:50:04,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936748998] [2021-05-22 02:50:04,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936748998] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:50:04,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:50:04,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 02:50:04,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256568506] [2021-05-22 02:50:04,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:50:04,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:50:04,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:50:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:50:04,944 INFO L87 Difference]: Start difference. First operand 442 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) [2021-05-22 02:50:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:50:04,956 INFO L93 Difference]: Finished difference Result 880 states and 2602 transitions. [2021-05-22 02:50:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:50:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) Word has length 26 [2021-05-22 02:50:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:50:04,961 INFO L225 Difference]: With dead ends: 880 [2021-05-22 02:50:04,961 INFO L226 Difference]: Without dead ends: 588 [2021-05-22 02:50:04,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:50:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-05-22 02:50:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 515. [2021-05-22 02:50:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 2.9591439688715955) internal successors, (1521), 514 states have internal predecessors, (1521), 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) [2021-05-22 02:50:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1521 transitions. [2021-05-22 02:50:04,992 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1521 transitions. Word has length 26 [2021-05-22 02:50:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:50:04,993 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1521 transitions. [2021-05-22 02:50:04,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) [2021-05-22 02:50:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1521 transitions. [2021-05-22 02:50:04,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-22 02:50:04,995 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:50:04,995 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:50:04,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 02:50:04,996 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:50:04,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:50:04,997 INFO L82 PathProgramCache]: Analyzing trace with hash -92913957, now seen corresponding path program 1 times [2021-05-22 02:50:04,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:50:04,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87956239] [2021-05-22 02:50:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:50:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:50:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 02:50:05,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:50:05,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87956239] [2021-05-22 02:50:05,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87956239] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 02:50:05,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344243493] [2021-05-22 02:50:05,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 02:50:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:50:05,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-22 02:50:05,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 02:50:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 02:50:05,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344243493] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 02:50:05,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 02:50:05,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2021-05-22 02:50:05,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308231242] [2021-05-22 02:50:05,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 02:50:05,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:50:05,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 02:50:05,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-22 02:50:05,331 INFO L87 Difference]: Start difference. First operand 515 states and 1521 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-05-22 02:50:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:50:05,577 INFO L93 Difference]: Finished difference Result 1639 states and 4869 transitions. [2021-05-22 02:50:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:50:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) Word has length 28 [2021-05-22 02:50:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:50:05,585 INFO L225 Difference]: With dead ends: 1639 [2021-05-22 02:50:05,586 INFO L226 Difference]: Without dead ends: 1137 [2021-05-22 02:50:05,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 161.0ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-05-22 02:50:05,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-05-22 02:50:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 843. [2021-05-22 02:50:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.9631828978622328) internal successors, (2495), 842 states have internal predecessors, (2495), 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) [2021-05-22 02:50:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2495 transitions. [2021-05-22 02:50:05,621 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2495 transitions. Word has length 28 [2021-05-22 02:50:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:50:05,621 INFO L482 AbstractCegarLoop]: Abstraction has 843 states and 2495 transitions. [2021-05-22 02:50:05,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-05-22 02:50:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2495 transitions. [2021-05-22 02:50:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-22 02:50:05,624 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:50:05,624 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:50:05,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 02:50:05,841 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:50:05,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:50:05,841 INFO L82 PathProgramCache]: Analyzing trace with hash -121778885, now seen corresponding path program 2 times [2021-05-22 02:50:05,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:50:05,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143184605] [2021-05-22 02:50:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:50:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:50:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:50:05,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:50:05,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143184605] [2021-05-22 02:50:05,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143184605] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:50:05,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:50:05,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 02:50:05,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252668636] [2021-05-22 02:50:05,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 02:50:05,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:50:05,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 02:50:05,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:50:05,869 INFO L87 Difference]: Start difference. First operand 843 states and 2495 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-05-22 02:50:05,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:50:05,880 INFO L93 Difference]: Finished difference Result 713 states and 2082 transitions. [2021-05-22 02:50:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 02:50:05,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) Word has length 28 [2021-05-22 02:50:05,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:50:05,884 INFO L225 Difference]: With dead ends: 713 [2021-05-22 02:50:05,884 INFO L226 Difference]: Without dead ends: 713 [2021-05-22 02:50:05,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 02:50:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-05-22 02:50:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-05-22 02:50:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 2.9241573033707864) internal successors, (2082), 712 states have internal predecessors, (2082), 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) [2021-05-22 02:50:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2082 transitions. [2021-05-22 02:50:05,902 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2082 transitions. Word has length 28 [2021-05-22 02:50:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:50:05,903 INFO L482 AbstractCegarLoop]: Abstraction has 713 states and 2082 transitions. [2021-05-22 02:50:05,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-05-22 02:50:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2082 transitions. [2021-05-22 02:50:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-22 02:50:05,905 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:50:05,905 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:50:05,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 02:50:05,905 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:50:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:50:05,906 INFO L82 PathProgramCache]: Analyzing trace with hash -643643710, now seen corresponding path program 3 times [2021-05-22 02:50:05,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:50:05,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712378164] [2021-05-22 02:50:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:50:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:50:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 02:50:06,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:50:06,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712378164] [2021-05-22 02:50:06,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712378164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 02:50:06,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404616280] [2021-05-22 02:50:06,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 02:50:06,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-22 02:50:06,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 02:50:06,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-22 02:50:06,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 02:50:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 02:50:06,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404616280] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 02:50:06,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 02:50:06,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2021-05-22 02:50:06,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117478377] [2021-05-22 02:50:06,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 02:50:06,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:50:06,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 02:50:06,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-05-22 02:50:06,321 INFO L87 Difference]: Start difference. First operand 713 states and 2082 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 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) [2021-05-22 02:50:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:50:07,204 INFO L93 Difference]: Finished difference Result 2300 states and 6794 transitions. [2021-05-22 02:50:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-22 02:50:07,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 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) Word has length 35 [2021-05-22 02:50:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:50:07,217 INFO L225 Difference]: With dead ends: 2300 [2021-05-22 02:50:07,217 INFO L226 Difference]: Without dead ends: 1648 [2021-05-22 02:50:07,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 543.1ms TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2021-05-22 02:50:07,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-05-22 02:50:07,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1168. [2021-05-22 02:50:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 2.942587832047986) internal successors, (3434), 1167 states have internal predecessors, (3434), 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) [2021-05-22 02:50:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3434 transitions. [2021-05-22 02:50:07,252 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3434 transitions. Word has length 35 [2021-05-22 02:50:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:50:07,253 INFO L482 AbstractCegarLoop]: Abstraction has 1168 states and 3434 transitions. [2021-05-22 02:50:07,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 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) [2021-05-22 02:50:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3434 transitions. [2021-05-22 02:50:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-22 02:50:07,257 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:50:07,257 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:50:07,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 02:50:07,473 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:50:07,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:50:07,473 INFO L82 PathProgramCache]: Analyzing trace with hash 407150600, now seen corresponding path program 4 times [2021-05-22 02:50:07,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:50:07,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635778429] [2021-05-22 02:50:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:50:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:50:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 02:50:07,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:50:07,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635778429] [2021-05-22 02:50:07,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635778429] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 02:50:07,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146479233] [2021-05-22 02:50:07,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 02:50:07,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-22 02:50:07,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 02:50:07,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-22 02:50:07,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 02:50:07,622 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-22 02:50:07,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 02:50:07,833 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.EqualityInformation.getEqinfo(EqualityInformation.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.derSimple(XnfDer.java:308) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.tryToEliminate_EqInfoBased(XnfDer.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.tryToEliminate(XnfDer.java:101) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:100) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-22 02:50:07,835 INFO L168 Benchmark]: Toolchain (without parser) took 3929.09 ms. Allocated memory is still 335.5 MB. Free memory was 315.0 MB in the beginning and 180.5 MB in the end (delta: 134.6 MB). Peak memory consumption was 134.8 MB. Max. memory is 16.0 GB. [2021-05-22 02:50:07,835 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 335.5 MB. Free memory was 316.3 MB in the beginning and 316.3 MB in the end (delta: 76.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:50:07,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.29 ms. Allocated memory is still 335.5 MB. Free memory was 315.0 MB in the beginning and 313.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:50:07,836 INFO L168 Benchmark]: Boogie Preprocessor took 16.75 ms. Allocated memory is still 335.5 MB. Free memory was 313.5 MB in the beginning and 312.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 02:50:07,836 INFO L168 Benchmark]: RCFGBuilder took 400.19 ms. Allocated memory is still 335.5 MB. Free memory was 312.4 MB in the beginning and 319.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. [2021-05-22 02:50:07,836 INFO L168 Benchmark]: TraceAbstraction took 3484.21 ms. Allocated memory is still 335.5 MB. Free memory was 317.6 MB in the beginning and 180.5 MB in the end (delta: 137.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 16.0 GB. [2021-05-22 02:50:07,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 335.5 MB. Free memory was 316.3 MB in the beginning and 316.3 MB in the end (delta: 76.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.29 ms. Allocated memory is still 335.5 MB. Free memory was 315.0 MB in the beginning and 313.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.75 ms. Allocated memory is still 335.5 MB. Free memory was 313.5 MB in the beginning and 312.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 400.19 ms. Allocated memory is still 335.5 MB. Free memory was 312.4 MB in the beginning and 319.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3484.21 ms. Allocated memory is still 335.5 MB. Free memory was 317.6 MB in the beginning and 180.5 MB in the end (delta: 137.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.EqualityInformation.getEqinfo(EqualityInformation.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...