/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.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 [2021-05-21 21:15:54,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 21:15:54,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 21:15:54,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 21:15:54,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 21:15:54,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 21:15:54,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 21:15:54,284 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.epf [2021-05-21 21:15:54,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 21:15:54,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 21:15:54,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 21:15:54,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 21:15:54,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 21:15:54,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 21:15:54,322 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 21:15:54,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 21:15:54,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 21:15:54,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 21:15:54,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 21:15:54,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 21:15:54,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 21:15:54,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 21:15:54,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 21:15:54,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 21:15:54,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 21:15:54,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 21:15:54,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 21:15:54,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 21:15:54,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 21:15:54,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 21:15:54,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 21:15:54,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 21:15:54,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 21:15:54,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 21:15:54,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 21:15:54,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 21:15:54,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 21:15:54,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 21:15:54,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 21:15:54,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 21:15:54,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 21:15:54,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 21:15:54,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 21:15:54,659 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 21:15:54,661 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 21:15:54,662 INFO L432 ainManager$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 [2021-05-21 21:15:54,662 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl' [2021-05-21 21:15:54,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 21:15:54,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 21:15:54,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 21:15:54,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 21:15:54,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 21:15:54,708 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 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,715 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 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 21:15:54,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 21:15:54,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 21:15:54,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 21:15:54,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (1/1) ... [2021-05-21 21:15:54,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 21:15:54,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 21:15:54,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 21:15:54,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 21:15:54,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (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 [2021-05-21 21:15:54,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-21 21:15:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-21 21:15:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-21 21:15:54,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-21 21:15:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-21 21:15:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-21 21:15:54,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 21:15:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 21:15:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 21:15:54,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-21 21:15:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-21 21:15:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-21 21:15:54,801 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 21:15:55,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 21:15:55,050 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 21:15:55,052 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 09:15:55 BoogieIcfgContainer [2021-05-21 21:15:55,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 21:15:55,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 21:15:55,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 21:15:55,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 21:15:55,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:15:54" (1/2) ... [2021-05-21 21:15:55,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca36c and model type ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 09:15:55, skipping insertion in model container [2021-05-21 21:15:55,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 09:15:55" (2/2) ... [2021-05-21 21:15:55,058 INFO L111 eAbstractionObserver]: Analyzing ICFG ring-nondet.wvr.bpl [2021-05-21 21:15:55,062 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 21:15:55,062 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 21:15:55,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 21:15:55,063 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 21:15:55,106 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-21 21:15:55,131 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 21:15:55,146 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 21:15:55,146 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 21:15:55,146 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 21:15:55,147 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 21:15:55,147 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 21:15:55,147 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 21:15:55,147 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 21:15:55,147 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 21:15:55,155 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2021-05-21 21:15:55,190 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) [2021-05-21 21:15:55,194 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) [2021-05-21 21:15:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-21 21:15:55,208 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:15:55,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:15:55,209 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:15:55,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:15:55,213 INFO L82 PathProgramCache]: Analyzing trace with hash -766477116, now seen corresponding path program 1 times [2021-05-21 21:15:55,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:15:55,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671773181] [2021-05-21 21:15:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:15:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:15:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:15:55,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:15:55,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671773181] [2021-05-21 21:15:55,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671773181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:15:55,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:15:55,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 21:15:55,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384665507] [2021-05-21 21:15:55,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 21:15:55,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:15:55,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 21:15:55,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:15:55,357 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) [2021-05-21 21:15:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:15:55,389 INFO L93 Difference]: Finished difference Result 393 states and 1157 transitions. [2021-05-21 21:15:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 21:15:55,391 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 [2021-05-21 21:15:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:15:55,404 INFO L225 Difference]: With dead ends: 393 [2021-05-21 21:15:55,405 INFO L226 Difference]: Without dead ends: 393 [2021-05-21 21:15:55,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:15:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-05-21 21:15:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-05-21 21:15:55,468 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) [2021-05-21 21:15:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1157 transitions. [2021-05-21 21:15:55,473 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1157 transitions. Word has length 16 [2021-05-21 21:15:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:15:55,474 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 1157 transitions. [2021-05-21 21:15:55,474 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) [2021-05-21 21:15:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1157 transitions. [2021-05-21 21:15:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-21 21:15:55,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:15:55,478 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] [2021-05-21 21:15:55,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 21:15:55,479 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:15:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:15:55,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1760185073, now seen corresponding path program 1 times [2021-05-21 21:15:55,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:15:55,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949123653] [2021-05-21 21:15:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:15:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:15:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:15:55,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:15:55,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949123653] [2021-05-21 21:15:55,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949123653] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:15:55,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:15:55,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 21:15:55,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202738684] [2021-05-21 21:15:55,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 21:15:55,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:15:55,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 21:15:55,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:15:55,517 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) [2021-05-21 21:15:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:15:55,542 INFO L93 Difference]: Finished difference Result 442 states and 1303 transitions. [2021-05-21 21:15:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 21:15:55,545 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 [2021-05-21 21:15:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:15:55,559 INFO L225 Difference]: With dead ends: 442 [2021-05-21 21:15:55,559 INFO L226 Difference]: Without dead ends: 442 [2021-05-21 21:15:55,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:15:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-05-21 21:15:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-05-21 21:15:55,596 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) [2021-05-21 21:15:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1303 transitions. [2021-05-21 21:15:55,599 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1303 transitions. Word has length 21 [2021-05-21 21:15:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:15:55,599 INFO L482 AbstractCegarLoop]: Abstraction has 442 states and 1303 transitions. [2021-05-21 21:15:55,599 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) [2021-05-21 21:15:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1303 transitions. [2021-05-21 21:15:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 21:15:55,612 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:15:55,612 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] [2021-05-21 21:15:55,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 21:15:55,613 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:15:55,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:15:55,615 INFO L82 PathProgramCache]: Analyzing trace with hash 992917241, now seen corresponding path program 1 times [2021-05-21 21:15:55,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:15:55,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78865646] [2021-05-21 21:15:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:15:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:15:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-21 21:15:55,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:15:55,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78865646] [2021-05-21 21:15:55,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78865646] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:15:55,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:15:55,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 21:15:55,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913465861] [2021-05-21 21:15:55,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 21:15:55,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:15:55,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 21:15:55,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:15:55,696 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) [2021-05-21 21:15:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:15:55,710 INFO L93 Difference]: Finished difference Result 880 states and 2602 transitions. [2021-05-21 21:15:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 21:15:55,711 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 [2021-05-21 21:15:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:15:55,714 INFO L225 Difference]: With dead ends: 880 [2021-05-21 21:15:55,714 INFO L226 Difference]: Without dead ends: 588 [2021-05-21 21:15:55,715 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 [2021-05-21 21:15:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-05-21 21:15:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 515. [2021-05-21 21:15:55,735 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) [2021-05-21 21:15:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1521 transitions. [2021-05-21 21:15:55,738 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1521 transitions. Word has length 26 [2021-05-21 21:15:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:15:55,739 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1521 transitions. [2021-05-21 21:15:55,739 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) [2021-05-21 21:15:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1521 transitions. [2021-05-21 21:15:55,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-21 21:15:55,741 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:15:55,741 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] [2021-05-21 21:15:55,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 21:15:55,741 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:15:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:15:55,742 INFO L82 PathProgramCache]: Analyzing trace with hash -92913957, now seen corresponding path program 1 times [2021-05-21 21:15:55,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:15:55,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319904772] [2021-05-21 21:15:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:15:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:15:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-21 21:15:55,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:15:55,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319904772] [2021-05-21 21:15:55,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319904772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 21:15:55,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390635907] [2021-05-21 21:15:55,814 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 [2021-05-21 21:15:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:15:55,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-21 21:15:55,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 21:15:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-21 21:15:56,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390635907] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 21:15:56,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 21:15:56,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2021-05-21 21:15:56,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162011017] [2021-05-21 21:15:56,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 21:15:56,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:15:56,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 21:15:56,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-21 21:15:56,096 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) [2021-05-21 21:15:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:15:56,276 INFO L93 Difference]: Finished difference Result 1639 states and 4869 transitions. [2021-05-21 21:15:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 21:15:56,277 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 [2021-05-21 21:15:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:15:56,284 INFO L225 Difference]: With dead ends: 1639 [2021-05-21 21:15:56,284 INFO L226 Difference]: Without dead ends: 1137 [2021-05-21 21:15:56,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-05-21 21:15:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-05-21 21:15:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 843. [2021-05-21 21:15:56,313 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) [2021-05-21 21:15:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2495 transitions. [2021-05-21 21:15:56,317 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2495 transitions. Word has length 28 [2021-05-21 21:15:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:15:56,317 INFO L482 AbstractCegarLoop]: Abstraction has 843 states and 2495 transitions. [2021-05-21 21:15:56,318 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) [2021-05-21 21:15:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2495 transitions. [2021-05-21 21:15:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-21 21:15:56,320 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:15:56,320 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] [2021-05-21 21:15:56,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 21:15:56,538 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:15:56,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:15:56,539 INFO L82 PathProgramCache]: Analyzing trace with hash -121778885, now seen corresponding path program 2 times [2021-05-21 21:15:56,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:15:56,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138432724] [2021-05-21 21:15:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:15:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:15:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:15:56,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:15:56,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138432724] [2021-05-21 21:15:56,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138432724] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:15:56,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:15:56,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 21:15:56,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846700670] [2021-05-21 21:15:56,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 21:15:56,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:15:56,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 21:15:56,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:15:56,568 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) [2021-05-21 21:15:56,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:15:56,576 INFO L93 Difference]: Finished difference Result 713 states and 2082 transitions. [2021-05-21 21:15:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 21:15:56,577 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 [2021-05-21 21:15:56,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:15:56,581 INFO L225 Difference]: With dead ends: 713 [2021-05-21 21:15:56,581 INFO L226 Difference]: Without dead ends: 713 [2021-05-21 21:15:56,581 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:15:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-05-21 21:15:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-05-21 21:15:56,597 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) [2021-05-21 21:15:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2082 transitions. [2021-05-21 21:15:56,600 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2082 transitions. Word has length 28 [2021-05-21 21:15:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:15:56,600 INFO L482 AbstractCegarLoop]: Abstraction has 713 states and 2082 transitions. [2021-05-21 21:15:56,600 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) [2021-05-21 21:15:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2082 transitions. [2021-05-21 21:15:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-21 21:15:56,603 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:15:56,603 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] [2021-05-21 21:15:56,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 21:15:56,603 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:15:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:15:56,604 INFO L82 PathProgramCache]: Analyzing trace with hash -643643710, now seen corresponding path program 3 times [2021-05-21 21:15:56,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:15:56,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12024447] [2021-05-21 21:15:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:15:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:15:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-21 21:15:56,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:15:56,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12024447] [2021-05-21 21:15:56,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12024447] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 21:15:56,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992321735] [2021-05-21 21:15:56,727 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 [2021-05-21 21:15:56,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-21 21:15:56,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 21:15:56,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-21 21:15:56,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 21:15:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-21 21:15:56,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992321735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 21:15:56,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-21 21:15:57,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2021-05-21 21:15:57,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683323718] [2021-05-21 21:15:57,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-21 21:15:57,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:15:57,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-21 21:15:57,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-05-21 21:15:57,003 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) [2021-05-21 21:15:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:15:57,839 INFO L93 Difference]: Finished difference Result 2300 states and 6794 transitions. [2021-05-21 21:15:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 21:15:57,840 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 [2021-05-21 21:15:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:15:57,848 INFO L225 Difference]: With dead ends: 2300 [2021-05-21 21:15:57,849 INFO L226 Difference]: Without dead ends: 1648 [2021-05-21 21:15:57,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 497.4ms TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2021-05-21 21:15:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-05-21 21:15:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1168. [2021-05-21 21:15:57,884 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) [2021-05-21 21:15:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3434 transitions. [2021-05-21 21:15:57,889 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3434 transitions. Word has length 35 [2021-05-21 21:15:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:15:57,889 INFO L482 AbstractCegarLoop]: Abstraction has 1168 states and 3434 transitions. [2021-05-21 21:15:57,889 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) [2021-05-21 21:15:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3434 transitions. [2021-05-21 21:15:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-21 21:15:57,893 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:15:57,893 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] [2021-05-21 21:15:58,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 21:15:58,110 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:15:58,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:15:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash 407150600, now seen corresponding path program 4 times [2021-05-21 21:15:58,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:15:58,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305358026] [2021-05-21 21:15:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:15:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:15:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-21 21:15:58,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:15:58,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305358026] [2021-05-21 21:15:58,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305358026] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 21:15:58,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593413059] [2021-05-21 21:15:58,181 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 [2021-05-21 21:15:58,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-21 21:15:58,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-21 21:15:58,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-21 21:15:58,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 21:15:58,287 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-21 21:15:58,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-21 21:15:58,510 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-21 21:15:58,513 INFO L168 Benchmark]: Toolchain (without parser) took 3816.76 ms. Allocated memory was 343.9 MB in the beginning and 457.2 MB in the end (delta: 113.2 MB). Free memory was 323.1 MB in the beginning and 423.3 MB in the end (delta: -100.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.0 GB. [2021-05-21 21:15:58,513 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 343.9 MB. Free memory was 324.4 MB in the beginning and 324.3 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 21:15:58,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.56 ms. Allocated memory is still 343.9 MB. Free memory was 323.1 MB in the beginning and 321.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 21:15:58,513 INFO L168 Benchmark]: Boogie Preprocessor took 18.20 ms. Allocated memory is still 343.9 MB. Free memory was 321.6 MB in the beginning and 320.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 21:15:58,513 INFO L168 Benchmark]: RCFGBuilder took 310.29 ms. Allocated memory is still 343.9 MB. Free memory was 320.5 MB in the beginning and 327.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.0 GB. [2021-05-21 21:15:58,514 INFO L168 Benchmark]: TraceAbstraction took 3458.92 ms. Allocated memory was 343.9 MB in the beginning and 457.2 MB in the end (delta: 113.2 MB). Free memory was 325.9 MB in the beginning and 423.3 MB in the end (delta: -97.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. [2021-05-21 21:15:58,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 343.9 MB. Free memory was 324.4 MB in the beginning and 324.3 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.56 ms. Allocated memory is still 343.9 MB. Free memory was 323.1 MB in the beginning and 321.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.20 ms. Allocated memory is still 343.9 MB. Free memory was 321.6 MB in the beginning and 320.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 310.29 ms. Allocated memory is still 343.9 MB. Free memory was 320.5 MB in the beginning and 327.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3458.92 ms. Allocated memory was 343.9 MB in the beginning and 457.2 MB in the end (delta: 113.2 MB). Free memory was 325.9 MB in the beginning and 423.3 MB in the end (delta: -97.3 MB). Peak memory consumption was 16.1 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...