/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 14:57:42,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 14:57:42,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 14:57:42,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 14:57:42,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 14:57:42,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 14:57:42,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 14:57:42,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 14:57:42,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 14:57:42,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 14:57:42,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 14:57:42,386 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 14:57:42,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 14:57:42,387 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 14:57:42,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 14:57:42,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 14:57:42,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 14:57:42,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 14:57:42,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 14:57:42,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 14:57:42,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 14:57:42,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 14:57:42,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 14:57:42,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 14:57:42,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 14:57:42,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 14:57:42,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 14:57:42,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 14:57:42,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:57:42,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 14:57:42,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 14:57:42,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 14:57:42,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 14:57:42,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 14:57:42,390 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 14:57:42,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 14:57:42,390 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 14:57:42,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 14:57:42,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 14:57:42,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 14:57:42,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 14:57:42,716 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 14:57:42,717 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 14:57:42,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl [2021-06-05 14:57:42,718 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2021-06-05 14:57:42,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 14:57:42,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 14:57:42,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 14:57:42,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 14:57:42,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 14:57:42,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 14:57:42,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 14:57:42,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 14:57:42,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 14:57:42,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/1) ... [2021-06-05 14:57:42,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 14:57:42,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 14:57:42,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 14:57:42,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 14:57:42,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (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 [2021-06-05 14:57:42,849 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 14:57:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 14:57:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 14:57:42,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 14:57:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 14:57:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 14:57:42,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 14:57:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 14:57:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 14:57:42,852 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 14:57:43,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 14:57:43,005 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 14:57:43,006 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:57:43 BoogieIcfgContainer [2021-06-05 14:57:43,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 14:57:43,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 14:57:43,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 14:57:43,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 14:57:43,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:57:42" (1/2) ... [2021-06-05 14:57:43,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f784168 and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 02:57:43, skipping insertion in model container [2021-06-05 14:57:43,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:57:43" (2/2) ... [2021-06-05 14:57:43,012 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2021-06-05 14:57:43,017 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 14:57:43,017 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 14:57:43,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 14:57:43,018 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 14:57:43,058 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-05 14:57:43,087 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 14:57:43,105 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 14:57:43,106 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 14:57:43,106 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 14:57:43,106 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 14:57:43,106 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 14:57:43,106 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 14:57:43,106 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 14:57:43,106 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 14:57:43,114 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-06-05 14:57:43,127 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 70 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 69 states have internal predecessors, (133), 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) [2021-06-05 14:57:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 69 states have internal predecessors, (133), 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) [2021-06-05 14:57:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-05 14:57:43,135 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:43,135 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:43,136 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:43,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1236874351, now seen corresponding path program 1 times [2021-06-05 14:57:43,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:43,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683009366] [2021-06-05 14:57:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:43,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:43,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683009366] [2021-06-05 14:57:43,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683009366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:43,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:43,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 14:57:43,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918276807] [2021-06-05 14:57:43,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:57:43,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:43,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:57:43,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:57:43,316 INFO L87 Difference]: Start difference. First operand has 70 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 69 states have internal predecessors, (133), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-06-05 14:57:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:43,369 INFO L93 Difference]: Finished difference Result 93 states and 180 transitions. [2021-06-05 14:57:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:57:43,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-06-05 14:57:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:43,378 INFO L225 Difference]: With dead ends: 93 [2021-06-05 14:57:43,379 INFO L226 Difference]: Without dead ends: 86 [2021-06-05 14:57:43,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:57:43,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-06-05 14:57:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2021-06-05 14:57:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.9605263157894737) internal successors, (149), 76 states have internal predecessors, (149), 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) [2021-06-05 14:57:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 149 transitions. [2021-06-05 14:57:43,441 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 149 transitions. Word has length 11 [2021-06-05 14:57:43,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:43,442 INFO L482 AbstractCegarLoop]: Abstraction has 77 states and 149 transitions. [2021-06-05 14:57:43,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-06-05 14:57:43,442 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 149 transitions. [2021-06-05 14:57:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 14:57:43,443 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:43,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:43,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 14:57:43,444 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:43,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1782774576, now seen corresponding path program 1 times [2021-06-05 14:57:43,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:43,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10710065] [2021-06-05 14:57:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:43,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:43,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10710065] [2021-06-05 14:57:43,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10710065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 14:57:43,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913437406] [2021-06-05 14:57:43,510 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 [2021-06-05 14:57:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:43,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 14:57:43,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 14:57:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:43,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913437406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 14:57:43,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 14:57:43,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-05 14:57:43,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447062201] [2021-06-05 14:57:43,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 14:57:43,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:43,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 14:57:43,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 14:57:43,685 INFO L87 Difference]: Start difference. First operand 77 states and 149 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-06-05 14:57:43,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:43,775 INFO L93 Difference]: Finished difference Result 120 states and 224 transitions. [2021-06-05 14:57:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:57:43,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2021-06-05 14:57:43,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:43,778 INFO L225 Difference]: With dead ends: 120 [2021-06-05 14:57:43,778 INFO L226 Difference]: Without dead ends: 120 [2021-06-05 14:57:43,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:57:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-06-05 14:57:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 80. [2021-06-05 14:57:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 79 states have internal predecessors, (157), 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) [2021-06-05 14:57:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 157 transitions. [2021-06-05 14:57:43,799 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 157 transitions. Word has length 16 [2021-06-05 14:57:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:43,799 INFO L482 AbstractCegarLoop]: Abstraction has 80 states and 157 transitions. [2021-06-05 14:57:43,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-06-05 14:57:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 157 transitions. [2021-06-05 14:57:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 14:57:43,800 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:43,801 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:44,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-06-05 14:57:44,021 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash 901524673, now seen corresponding path program 1 times [2021-06-05 14:57:44,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:44,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932612437] [2021-06-05 14:57:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:44,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:44,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932612437] [2021-06-05 14:57:44,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932612437] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:44,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:44,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:57:44,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984350098] [2021-06-05 14:57:44,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 14:57:44,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:44,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 14:57:44,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 14:57:44,071 INFO L87 Difference]: Start difference. First operand 80 states and 157 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-06-05 14:57:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:44,132 INFO L93 Difference]: Finished difference Result 134 states and 254 transitions. [2021-06-05 14:57:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:57:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2021-06-05 14:57:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:44,135 INFO L225 Difference]: With dead ends: 134 [2021-06-05 14:57:44,135 INFO L226 Difference]: Without dead ends: 129 [2021-06-05 14:57:44,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:57:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-06-05 14:57:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2021-06-05 14:57:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.97979797979798) internal successors, (196), 99 states have internal predecessors, (196), 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) [2021-06-05 14:57:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 196 transitions. [2021-06-05 14:57:44,158 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 196 transitions. Word has length 16 [2021-06-05 14:57:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:44,158 INFO L482 AbstractCegarLoop]: Abstraction has 100 states and 196 transitions. [2021-06-05 14:57:44,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-06-05 14:57:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 196 transitions. [2021-06-05 14:57:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 14:57:44,162 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:44,162 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:44,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 14:57:44,162 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2094240753, now seen corresponding path program 2 times [2021-06-05 14:57:44,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:44,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371381451] [2021-06-05 14:57:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:44,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:44,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371381451] [2021-06-05 14:57:44,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371381451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:44,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:44,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:57:44,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848714009] [2021-06-05 14:57:44,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 14:57:44,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:44,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 14:57:44,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 14:57:44,204 INFO L87 Difference]: Start difference. First operand 100 states and 196 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-06-05 14:57:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:44,268 INFO L93 Difference]: Finished difference Result 105 states and 205 transitions. [2021-06-05 14:57:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:57:44,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2021-06-05 14:57:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:44,271 INFO L225 Difference]: With dead ends: 105 [2021-06-05 14:57:44,271 INFO L226 Difference]: Without dead ends: 105 [2021-06-05 14:57:44,271 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:57:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-06-05 14:57:44,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2021-06-05 14:57:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.9761904761904763) internal successors, (166), 84 states have internal predecessors, (166), 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) [2021-06-05 14:57:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 166 transitions. [2021-06-05 14:57:44,278 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 166 transitions. Word has length 16 [2021-06-05 14:57:44,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:44,278 INFO L482 AbstractCegarLoop]: Abstraction has 85 states and 166 transitions. [2021-06-05 14:57:44,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-06-05 14:57:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 166 transitions. [2021-06-05 14:57:44,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 14:57:44,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:44,280 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:44,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 14:57:44,280 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:44,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash -902482072, now seen corresponding path program 2 times [2021-06-05 14:57:44,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:44,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815158417] [2021-06-05 14:57:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:44,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:44,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815158417] [2021-06-05 14:57:44,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815158417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:44,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:44,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:57:44,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704612888] [2021-06-05 14:57:44,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 14:57:44,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:44,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 14:57:44,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 14:57:44,349 INFO L87 Difference]: Start difference. First operand 85 states and 166 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-06-05 14:57:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:44,402 INFO L93 Difference]: Finished difference Result 105 states and 203 transitions. [2021-06-05 14:57:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:57:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2021-06-05 14:57:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:44,403 INFO L225 Difference]: With dead ends: 105 [2021-06-05 14:57:44,403 INFO L226 Difference]: Without dead ends: 103 [2021-06-05 14:57:44,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:57:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-06-05 14:57:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2021-06-05 14:57:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.9642857142857142) internal successors, (165), 84 states have internal predecessors, (165), 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) [2021-06-05 14:57:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 165 transitions. [2021-06-05 14:57:44,409 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 165 transitions. Word has length 16 [2021-06-05 14:57:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:44,409 INFO L482 AbstractCegarLoop]: Abstraction has 85 states and 165 transitions. [2021-06-05 14:57:44,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-06-05 14:57:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 165 transitions. [2021-06-05 14:57:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 14:57:44,410 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:44,410 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] [2021-06-05 14:57:44,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 14:57:44,410 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:44,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:44,411 INFO L82 PathProgramCache]: Analyzing trace with hash 733312672, now seen corresponding path program 1 times [2021-06-05 14:57:44,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:44,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672544609] [2021-06-05 14:57:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 14:57:44,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:44,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672544609] [2021-06-05 14:57:44,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672544609] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:44,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:44,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 14:57:44,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330937546] [2021-06-05 14:57:44,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 14:57:44,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:44,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 14:57:44,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:57:44,480 INFO L87 Difference]: Start difference. First operand 85 states and 165 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2021-06-05 14:57:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:44,500 INFO L93 Difference]: Finished difference Result 138 states and 270 transitions. [2021-06-05 14:57:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:57:44,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 [2021-06-05 14:57:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:44,502 INFO L225 Difference]: With dead ends: 138 [2021-06-05 14:57:44,502 INFO L226 Difference]: Without dead ends: 99 [2021-06-05 14:57:44,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:57:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-06-05 14:57:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2021-06-05 14:57:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.9651162790697674) internal successors, (169), 86 states have internal predecessors, (169), 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) [2021-06-05 14:57:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 169 transitions. [2021-06-05 14:57:44,508 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 169 transitions. Word has length 21 [2021-06-05 14:57:44,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:44,508 INFO L482 AbstractCegarLoop]: Abstraction has 87 states and 169 transitions. [2021-06-05 14:57:44,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2021-06-05 14:57:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 169 transitions. [2021-06-05 14:57:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 14:57:44,509 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:44,509 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] [2021-06-05 14:57:44,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 14:57:44,509 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:44,510 INFO L82 PathProgramCache]: Analyzing trace with hash -667355684, now seen corresponding path program 2 times [2021-06-05 14:57:44,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:44,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755094865] [2021-06-05 14:57:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:44,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:44,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755094865] [2021-06-05 14:57:44,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755094865] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 14:57:44,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710324590] [2021-06-05 14:57:44,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-06-05 14:57:44,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 14:57:44,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 14:57:44,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 14:57:44,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 14:57:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:44,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710324590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 14:57:44,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 14:57:44,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-06-05 14:57:44,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597263191] [2021-06-05 14:57:44,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 14:57:44,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:44,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 14:57:44,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 14:57:44,672 INFO L87 Difference]: Start difference. First operand 87 states and 169 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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) [2021-06-05 14:57:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:44,694 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2021-06-05 14:57:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 14:57:44,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 [2021-06-05 14:57:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:44,695 INFO L225 Difference]: With dead ends: 85 [2021-06-05 14:57:44,695 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 14:57:44,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 14:57:44,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 14:57:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 14:57:44,696 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) [2021-06-05 14:57:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 14:57:44,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-06-05 14:57:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:44,696 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 14:57:44,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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) [2021-06-05 14:57:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 14:57:44,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 14:57:44,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 14:57:44,920 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 14:57:44,922 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 02:57:44 BasicIcfg [2021-06-05 14:57:44,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 14:57:44,923 INFO L168 Benchmark]: Toolchain (without parser) took 2173.39 ms. Allocated memory is still 346.0 MB. Free memory was 325.4 MB in the beginning and 277.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.0 GB. [2021-06-05 14:57:44,923 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 326.5 MB in the beginning and 326.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 14:57:44,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.47 ms. Allocated memory is still 346.0 MB. Free memory was 325.4 MB in the beginning and 323.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 14:57:44,923 INFO L168 Benchmark]: Boogie Preprocessor took 14.28 ms. Allocated memory is still 346.0 MB. Free memory was 323.9 MB in the beginning and 322.9 MB in the end (delta: 962.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 14:57:44,924 INFO L168 Benchmark]: RCFGBuilder took 215.91 ms. Allocated memory is still 346.0 MB. Free memory was 322.9 MB in the beginning and 312.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-05 14:57:44,924 INFO L168 Benchmark]: TraceAbstraction took 1914.35 ms. Allocated memory is still 346.0 MB. Free memory was 311.9 MB in the beginning and 277.9 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.0 GB. [2021-06-05 14:57:44,925 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 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 326.5 MB in the beginning and 326.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.47 ms. Allocated memory is still 346.0 MB. Free memory was 325.4 MB in the beginning and 323.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.28 ms. Allocated memory is still 346.0 MB. Free memory was 323.9 MB in the beginning and 322.9 MB in the end (delta: 962.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 215.91 ms. Allocated memory is still 346.0 MB. Free memory was 322.9 MB in the beginning and 312.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1914.35 ms. Allocated memory is still 346.0 MB. Free memory was 311.9 MB in the beginning and 277.9 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1815.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 14.7ms, AutomataDifference: 408.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 149 SDtfs, 127 SDslu, 249 SDs, 0 SdLazy, 181 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 180.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 149.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 98.7ms AutomataMinimizationTime, 7 MinimizatonAttempts, 128 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.7ms SsaConstructionTime, 93.8ms SatisfiabilityAnalysisTime, 506.3ms InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 661 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 5/11 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...