/usr/bin/java -Xmx8000000000 -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/POPL2022/incr-decr06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 11:59:57,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 11:59:57,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 11:59:57,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-30 11:59:57,331 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 [2021-06-30 11:59:57,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 11:59:57,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 11:59:57,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-30 11:59:57,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-30 11:59:57,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 11:59:57,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 11:59:57,376 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 11:59:57,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 11:59:57,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 11:59:57,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 11:59:57,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 11:59:57,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-30 11:59:57,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 11:59:57,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 11:59:57,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 11:59:57,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 11:59:57,645 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 11:59:57,647 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 11:59:57,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr06.bpl [2021-06-30 11:59:57,660 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr06.bpl' [2021-06-30 11:59:57,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 11:59:57,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 11:59:57,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 11:59:57,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 11:59:57,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 11:59:57,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 11:59:57,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 11:59:57,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 11:59:57,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 11:59:57,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... [2021-06-30 11:59:57,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 11:59:57,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 11:59:57,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 11:59:57,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 11:59:57,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 11:59:57,792 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 11:59:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 11:59:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 11:59:57,793 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 11:59:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 11:59:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 11:59:57,794 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-30 11:59:57,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 11:59:57,923 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 11:59:57,924 INFO L202 PluginConnector]: Adding new model incr-decr06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 11:59:57 BoogieIcfgContainer [2021-06-30 11:59:57,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 11:59:57,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 11:59:57,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 11:59:57,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 11:59:57,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:57" (1/2) ... [2021-06-30 11:59:57,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13563175 and model type incr-decr06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 11:59:57, skipping insertion in model container [2021-06-30 11:59:57,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 11:59:57" (2/2) ... [2021-06-30 11:59:57,929 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr06.bpl [2021-06-30 11:59:57,933 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-30 11:59:57,933 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 11:59:57,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 11:59:57,934 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 11:59:58,006 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-06-30 11:59:58,020 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-30 11:59:58,032 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 11:59:58,033 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 11:59:58,033 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 11:59:58,033 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 11:59:58,033 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 11:59:58,033 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 11:59:58,033 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 11:59:58,033 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 11:59:58,040 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 40 transitions, 128 flow [2021-06-30 11:59:58,225 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1461 states, 1458 states have (on average 5.751714677640604) internal successors, (8386), 1458 states have internal predecessors, (8386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 1461 states, 1458 states have (on average 5.751714677640604) internal successors, (8386), 1458 states have internal predecessors, (8386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-30 11:59:58,248 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:59:58,248 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 11:59:58,249 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:59:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:59:58,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1443138474, now seen corresponding path program 1 times [2021-06-30 11:59:58,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:59:58,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72919253] [2021-06-30 11:59:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:59:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 11:59:58,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:59:58,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72919253] [2021-06-30 11:59:58,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72919253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:59:58,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:59:58,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-30 11:59:58,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960344391] [2021-06-30 11:59:58,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-30 11:59:58,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:59:58,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-30 11:59:58,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 11:59:58,413 INFO L87 Difference]: Start difference. First operand has 1461 states, 1458 states have (on average 5.751714677640604) internal successors, (8386), 1458 states have internal predecessors, (8386), 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, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:59:58,499 INFO L93 Difference]: Finished difference Result 1648 states and 9411 transitions. [2021-06-30 11:59:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-30 11:59:58,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2021-06-30 11:59:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:59:58,532 INFO L225 Difference]: With dead ends: 1648 [2021-06-30 11:59:58,532 INFO L226 Difference]: Without dead ends: 1641 [2021-06-30 11:59:58,533 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 11:59:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-30 11:59:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1641. [2021-06-30 11:59:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1640 states have (on average 5.721951219512195) internal successors, (9384), 1640 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 9384 transitions. [2021-06-30 11:59:58,696 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 9384 transitions. Word has length 20 [2021-06-30 11:59:58,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:59:58,697 INFO L482 AbstractCegarLoop]: Abstraction has 1641 states and 9384 transitions. [2021-06-30 11:59:58,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 9384 transitions. [2021-06-30 11:59:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-30 11:59:58,718 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:59:58,719 INFO L504 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] [2021-06-30 11:59:58,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-30 11:59:58,719 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:59:58,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:59:58,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1823038036, now seen corresponding path program 1 times [2021-06-30 11:59:58,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:59:58,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582663981] [2021-06-30 11:59:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:59:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:59:58,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:59:58,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582663981] [2021-06-30 11:59:58,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582663981] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:59:58,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:59:58,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:59:58,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079948923] [2021-06-30 11:59:58,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:59:58,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:59:58,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:59:58,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:59:58,860 INFO L87 Difference]: Start difference. First operand 1641 states and 9384 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:59:58,973 INFO L93 Difference]: Finished difference Result 2277 states and 12959 transitions. [2021-06-30 11:59:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:59:58,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-06-30 11:59:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:59:58,989 INFO L225 Difference]: With dead ends: 2277 [2021-06-30 11:59:58,989 INFO L226 Difference]: Without dead ends: 2205 [2021-06-30 11:59:58,990 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:59:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-06-30 11:59:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2045. [2021-06-30 11:59:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 2044 states have (on average 5.731898238747553) internal successors, (11716), 2044 states have internal predecessors, (11716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 11716 transitions. [2021-06-30 11:59:59,096 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 11716 transitions. Word has length 22 [2021-06-30 11:59:59,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:59:59,097 INFO L482 AbstractCegarLoop]: Abstraction has 2045 states and 11716 transitions. [2021-06-30 11:59:59,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 11716 transitions. [2021-06-30 11:59:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-30 11:59:59,103 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:59:59,104 INFO L504 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] [2021-06-30 11:59:59,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-30 11:59:59,104 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:59:59,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:59:59,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1077795098, now seen corresponding path program 1 times [2021-06-30 11:59:59,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:59:59,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177217550] [2021-06-30 11:59:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:59:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 11:59:59,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:59:59,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177217550] [2021-06-30 11:59:59,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177217550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:59:59,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:59:59,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-30 11:59:59,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715998335] [2021-06-30 11:59:59,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 11:59:59,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:59:59,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 11:59:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:59:59,171 INFO L87 Difference]: Start difference. First operand 2045 states and 11716 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:59:59,261 INFO L93 Difference]: Finished difference Result 3134 states and 17958 transitions. [2021-06-30 11:59:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 11:59:59,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2021-06-30 11:59:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:59:59,304 INFO L225 Difference]: With dead ends: 3134 [2021-06-30 11:59:59,304 INFO L226 Difference]: Without dead ends: 2817 [2021-06-30 11:59:59,305 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:59:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-06-30 11:59:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2347. [2021-06-30 11:59:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2346 states have (on average 5.770673486786019) internal successors, (13538), 2346 states have internal predecessors, (13538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 13538 transitions. [2021-06-30 11:59:59,454 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 13538 transitions. Word has length 24 [2021-06-30 11:59:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:59:59,454 INFO L482 AbstractCegarLoop]: Abstraction has 2347 states and 13538 transitions. [2021-06-30 11:59:59,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 13538 transitions. [2021-06-30 11:59:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-30 11:59:59,462 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:59:59,462 INFO L504 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] [2021-06-30 11:59:59,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-30 11:59:59,462 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 11:59:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:59:59,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2070312520, now seen corresponding path program 1 times [2021-06-30 11:59:59,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:59:59,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396844825] [2021-06-30 11:59:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:59:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:59:59,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:59:59,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396844825] [2021-06-30 11:59:59,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396844825] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 11:59:59,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583005750] [2021-06-30 11:59:59,561 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 [2021-06-30 11:59:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:59,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-30 11:59:59,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 11:59:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:59:59,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583005750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 11:59:59,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 11:59:59,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-30 11:59:59,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841590670] [2021-06-30 11:59:59,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-30 11:59:59,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:59:59,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-30 11:59:59,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-30 11:59:59,804 INFO L87 Difference]: Start difference. First operand 2347 states and 13538 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2021-06-30 11:59:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:59:59,952 INFO L93 Difference]: Finished difference Result 3667 states and 21200 transitions. [2021-06-30 11:59:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-30 11:59:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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 [2021-06-30 11:59:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:59:59,988 INFO L225 Difference]: With dead ends: 3667 [2021-06-30 11:59:59,988 INFO L226 Difference]: Without dead ends: 2843 [2021-06-30 11:59:59,989 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-30 12:00:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2021-06-30 12:00:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2249. [2021-06-30 12:00:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 2248 states have (on average 5.801601423487544) internal successors, (13042), 2248 states have internal predecessors, (13042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:00:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 13042 transitions. [2021-06-30 12:00:00,148 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 13042 transitions. Word has length 26 [2021-06-30 12:00:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 12:00:00,148 INFO L482 AbstractCegarLoop]: Abstraction has 2249 states and 13042 transitions. [2021-06-30 12:00:00,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2021-06-30 12:00:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 13042 transitions. [2021-06-30 12:00:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-30 12:00:00,156 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 12:00:00,156 INFO L504 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] [2021-06-30 12:00:00,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:00:00,379 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:00:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:00:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1607797276, now seen corresponding path program 1 times [2021-06-30 12:00:00,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:00:00,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920689953] [2021-06-30 12:00:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:00:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:00:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 12:00:00,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:00:00,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920689953] [2021-06-30 12:00:00,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920689953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:00:00,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69109754] [2021-06-30 12:00:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-30 12:00:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:00:00,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-30 12:00:00,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 12:00:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 12:00:00,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69109754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:00:00,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 12:00:00,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-06-30 12:00:00,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677365337] [2021-06-30 12:00:00,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-30 12:00:00,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:00:00,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-30 12:00:00,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-30 12:00:00,659 INFO L87 Difference]: Start difference. First operand 2249 states and 13042 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2021-06-30 12:00:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 12:00:00,862 INFO L93 Difference]: Finished difference Result 3570 states and 20789 transitions. [2021-06-30 12:00:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-30 12:00:00,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 [2021-06-30 12:00:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 12:00:00,873 INFO L225 Difference]: With dead ends: 3570 [2021-06-30 12:00:00,874 INFO L226 Difference]: Without dead ends: 2175 [2021-06-30 12:00:00,874 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-30 12:00:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2021-06-30 12:00:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 1803. [2021-06-30 12:00:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 5.826859045504994) internal successors, (10500), 1802 states have internal predecessors, (10500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:00:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 10500 transitions. [2021-06-30 12:00:00,939 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 10500 transitions. Word has length 28 [2021-06-30 12:00:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 12:00:00,940 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 10500 transitions. [2021-06-30 12:00:00,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2021-06-30 12:00:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 10500 transitions. [2021-06-30 12:00:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-30 12:00:00,945 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 12:00:00,945 INFO L504 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, 1, 1] [2021-06-30 12:00:01,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:00:01,162 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:00:01,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:00:01,162 INFO L82 PathProgramCache]: Analyzing trace with hash 290983498, now seen corresponding path program 1 times [2021-06-30 12:00:01,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:00:01,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313789972] [2021-06-30 12:00:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:00:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:00:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 12:00:01,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:00:01,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313789972] [2021-06-30 12:00:01,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313789972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:00:01,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629148682] [2021-06-30 12:00:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-30 12:00:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:00:01,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-30 12:00:01,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 12:00:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 12:00:01,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629148682] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:00:01,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 12:00:01,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-06-30 12:00:01,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195622444] [2021-06-30 12:00:01,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-30 12:00:01,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:00:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-30 12:00:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-30 12:00:01,375 INFO L87 Difference]: Start difference. First operand 1803 states and 10500 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:00:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 12:00:01,584 INFO L93 Difference]: Finished difference Result 2895 states and 16873 transitions. [2021-06-30 12:00:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-30 12:00:01,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 30 [2021-06-30 12:00:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 12:00:01,601 INFO L225 Difference]: With dead ends: 2895 [2021-06-30 12:00:01,601 INFO L226 Difference]: Without dead ends: 1309 [2021-06-30 12:00:01,602 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-30 12:00:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2021-06-30 12:00:01,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1221. [2021-06-30 12:00:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 5.80327868852459) internal successors, (7080), 1220 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:00:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 7080 transitions. [2021-06-30 12:00:01,662 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 7080 transitions. Word has length 30 [2021-06-30 12:00:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 12:00:01,662 INFO L482 AbstractCegarLoop]: Abstraction has 1221 states and 7080 transitions. [2021-06-30 12:00:01,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:00:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 7080 transitions. [2021-06-30 12:00:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-30 12:00:01,670 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 12:00:01,670 INFO L504 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, 1, 1, 1, 1] [2021-06-30 12:00:01,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:00:01,894 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-30 12:00:01,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 12:00:01,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1297590380, now seen corresponding path program 1 times [2021-06-30 12:00:01,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 12:00:01,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333671296] [2021-06-30 12:00:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 12:00:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:00:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 12:00:01,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 12:00:01,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333671296] [2021-06-30 12:00:01,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333671296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:00:01,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628905913] [2021-06-30 12:00:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:00:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 12:00:02,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-30 12:00:02,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 12:00:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 12:00:02,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628905913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 12:00:02,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 12:00:02,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-06-30 12:00:02,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745530868] [2021-06-30 12:00:02,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-30 12:00:02,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 12:00:02,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-30 12:00:02,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-30 12:00:02,159 INFO L87 Difference]: Start difference. First operand 1221 states and 7080 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:00:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 12:00:02,388 INFO L93 Difference]: Finished difference Result 1220 states and 7079 transitions. [2021-06-30 12:00:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-30 12:00:02,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 32 [2021-06-30 12:00:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 12:00:02,389 INFO L225 Difference]: With dead ends: 1220 [2021-06-30 12:00:02,389 INFO L226 Difference]: Without dead ends: 0 [2021-06-30 12:00:02,389 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-30 12:00:02,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-30 12:00:02,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-30 12:00:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:00:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-30 12:00:02,390 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-06-30 12:00:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 12:00:02,390 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-30 12:00:02,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 12:00:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-30 12:00:02,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-30 12:00:02,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 12:00:02,609 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-30 12:00:02,611 INFO L202 PluginConnector]: Adding new model incr-decr06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.06 12:00:02 BasicIcfg [2021-06-30 12:00:02,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-30 12:00:02,611 INFO L168 Benchmark]: Toolchain (without parser) took 4933.92 ms. Allocated memory was 127.9 MB in the beginning and 498.1 MB in the end (delta: 370.1 MB). Free memory was 109.0 MB in the beginning and 326.4 MB in the end (delta: -217.4 MB). Peak memory consumption was 153.4 MB. Max. memory is 8.0 GB. [2021-06-30 12:00:02,612 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.33 ms. Allocated memory is still 127.9 MB. Free memory is still 110.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-30 12:00:02,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.00 ms. Allocated memory is still 127.9 MB. Free memory was 108.9 MB in the beginning and 107.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-30 12:00:02,612 INFO L168 Benchmark]: Boogie Preprocessor took 10.25 ms. Allocated memory is still 127.9 MB. Free memory was 107.4 MB in the beginning and 106.5 MB in the end (delta: 933.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-30 12:00:02,612 INFO L168 Benchmark]: RCFGBuilder took 210.74 ms. Allocated memory is still 127.9 MB. Free memory was 106.5 MB in the beginning and 108.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 8.0 GB. [2021-06-30 12:00:02,612 INFO L168 Benchmark]: TraceAbstraction took 4686.03 ms. Allocated memory was 127.9 MB in the beginning and 498.1 MB in the end (delta: 370.1 MB). Free memory was 108.2 MB in the beginning and 326.4 MB in the end (delta: -218.2 MB). Peak memory consumption was 152.0 MB. Max. memory is 8.0 GB. [2021-06-30 12:00:02,612 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 0.33 ms. Allocated memory is still 127.9 MB. Free memory is still 110.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.00 ms. Allocated memory is still 127.9 MB. Free memory was 108.9 MB in the beginning and 107.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.25 ms. Allocated memory is still 127.9 MB. Free memory was 107.4 MB in the beginning and 106.5 MB in the end (delta: 933.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 210.74 ms. Allocated memory is still 127.9 MB. Free memory was 106.5 MB in the beginning and 108.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4686.03 ms. Allocated memory was 127.9 MB in the beginning and 498.1 MB in the end (delta: 370.1 MB). Free memory was 108.2 MB in the beginning and 326.4 MB in the end (delta: -218.2 MB). Peak memory consumption was 152.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 8 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4576.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 76.5ms, AutomataDifference: 1258.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 192.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 405 SDtfs, 260 SDslu, 1470 SDs, 0 SdLazy, 1560 SolverSat, 210 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 642.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 214.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2347occurred in iteration=3, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 692.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 1684 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 54.4ms SsaConstructionTime, 143.9ms SatisfiabilityAnalysisTime, 963.6ms InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 1933 SizeOfPredicates, 0 NumberOfNonLiveVariables, 452 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 15/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...