/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-03 15:04:53,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 15:04:53,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 15:04:53,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-03 15:04:53,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-03 15:04:53,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-03 15:04:53,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-03 15:04:53,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-03 15:04:53,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-03 15:04:53,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-03 15:04:53,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-03 15:04:53,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-03 15:04:53,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-03 15:04:53,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-03 15:04:53,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-03 15:04:53,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-03 15:04:53,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-03 15:04:53,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-03 15:04:53,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-03 15:04:53,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-03 15:04:53,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-03 15:04:53,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-03 15:04:53,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-03 15:04:53,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-03 15:04:53,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-03 15:04:53,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-03 15:04:53,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-03 15:04:53,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-03 15:04:53,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-03 15:04:53,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-03 15:04:53,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-03 15:04:53,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-03 15:04:53,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-03 15:04:53,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-03 15:04:53,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-03 15:04:53,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-03 15:04:53,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-03 15:04:53,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-03 15:04:53,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 15:04:53,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 15:04:53,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 15:04:53,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-05-03 15:04:53,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 15:04:53,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 15:04:53,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-03 15:04:53,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-03 15:04:53,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-03 15:04:53,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-03 15:04:53,487 INFO L138 SettingsManager]: * Use SBE=true [2021-05-03 15:04:53,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 15:04:53,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 15:04:53,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 15:04:53,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 15:04:53,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 15:04:53,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 15:04:53,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 15:04:53,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 15:04:53,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 15:04:53,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 15:04:53,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-03 15:04:53,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-03 15:04:53,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-03 15:04:53,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-03 15:04:53,490 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-03 15:04:53,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 15:04:53,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-03 15:04:53,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 15:04:53,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 15:04:53,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 15:04:53,752 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-03 15:04:53,753 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-03 15:04:53,753 INFO L432 ainManager$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 [2021-05-03 15:04:53,753 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2021-05-03 15:04:53,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 15:04:53,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 15:04:53,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-03 15:04:53,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-03 15:04:53,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-03 15:04:53,805 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,810 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-03 15:04:53,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 15:04:53,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 15:04:53,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 15:04:53,822 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,822 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,823 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,823 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,825 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,827 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,827 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 03.05 03:04:53" (1/1) ... [2021-05-03 15:04:53,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 15:04:53,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 15:04:53,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 15:04:53,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 15:04:53,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:04:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 15:04:53,876 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-03 15:04:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-03 15:04:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-03 15:04:53,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-03 15:04:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-03 15:04:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-03 15:04:53,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-03 15:04:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 15:04:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 15:04:53,878 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-03 15:04:54,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 15:04:54,005 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-03 15:04:54,007 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 03:04:54 BoogieIcfgContainer [2021-05-03 15:04:54,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 15:04:54,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 15:04:54,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 15:04:54,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 15:04:54,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 03:04:53" (1/2) ... [2021-05-03 15:04:54,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283e462d and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 03:04:54, skipping insertion in model container [2021-05-03 15:04:54,012 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 03.05 03:04:54" (2/2) ... [2021-05-03 15:04:54,013 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2021-05-03 15:04:54,017 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-03 15:04:54,017 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-03 15:04:54,020 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 15:04:54,020 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-03 15:04:54,048 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-05-03 15:04:54,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-03 15:04:54,091 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 15:04:54,091 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 15:04:54,091 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-03 15:04:54,091 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 15:04:54,091 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 15:04:54,091 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 15:04:54,092 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 15:04:54,092 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 15:04:54,115 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-05-03 15:04:54,135 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) [2021-05-03 15:04:54,140 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) [2021-05-03 15:04:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-03 15:04:54,146 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:04:54,147 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 15:04:54,147 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 15:04:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:04:54,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1236874351, now seen corresponding path program 1 times [2021-05-03 15:04:54,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:04:54,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234693912] [2021-05-03 15:04:54,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:04:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:04:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:04:54,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234693912] [2021-05-03 15:04:54,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:04:54,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-03 15:04:54,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641216540] [2021-05-03 15:04:54,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 15:04:54,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:04:54,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 15:04:54,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 15:04:54,313 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) [2021-05-03 15:04:54,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:04:54,346 INFO L93 Difference]: Finished difference Result 93 states and 180 transitions. [2021-05-03 15:04:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 15:04:54,348 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 [2021-05-03 15:04:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:04:54,355 INFO L225 Difference]: With dead ends: 93 [2021-05-03 15:04:54,356 INFO L226 Difference]: Without dead ends: 86 [2021-05-03 15:04:54,357 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 15:04:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-03 15:04:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2021-05-03 15:04:54,397 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) [2021-05-03 15:04:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 149 transitions. [2021-05-03 15:04:54,400 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 149 transitions. Word has length 11 [2021-05-03 15:04:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:04:54,402 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 149 transitions. [2021-05-03 15:04:54,402 INFO L481 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) [2021-05-03 15:04:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 149 transitions. [2021-05-03 15:04:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-03 15:04:54,404 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:04:54,404 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 15:04:54,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 15:04:54,405 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 15:04:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:04:54,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1782774576, now seen corresponding path program 1 times [2021-05-03 15:04:54,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:04:54,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289432064] [2021-05-03 15:04:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:04:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:04:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:04:54,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289432064] [2021-05-03 15:04:54,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276291333] [2021-05-03 15:04:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 15:04:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:04:54,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-03 15:04:54,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 15:04:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:04:54,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 15:04:54,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-05-03 15:04:54,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970825532] [2021-05-03 15:04:54,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-03 15:04:54,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:04:54,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-03 15:04:54,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-03 15:04:54,583 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) [2021-05-03 15:04:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:04:54,622 INFO L93 Difference]: Finished difference Result 120 states and 224 transitions. [2021-05-03 15:04:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:04:54,623 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 [2021-05-03 15:04:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:04:54,624 INFO L225 Difference]: With dead ends: 120 [2021-05-03 15:04:54,624 INFO L226 Difference]: Without dead ends: 120 [2021-05-03 15:04:54,625 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:04:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-03 15:04:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 80. [2021-05-03 15:04:54,630 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) [2021-05-03 15:04:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 157 transitions. [2021-05-03 15:04:54,631 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 157 transitions. Word has length 16 [2021-05-03 15:04:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:04:54,631 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 157 transitions. [2021-05-03 15:04:54,631 INFO L481 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) [2021-05-03 15:04:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 157 transitions. [2021-05-03 15:04:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-03 15:04:54,632 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:04:54,632 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 15:04:54,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-03 15:04:54,841 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 15:04:54,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:04:54,842 INFO L82 PathProgramCache]: Analyzing trace with hash 901524673, now seen corresponding path program 1 times [2021-05-03 15:04:54,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:04:54,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143596566] [2021-05-03 15:04:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:04:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:04:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:04:54,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143596566] [2021-05-03 15:04:54,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:04:54,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 15:04:54,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707253539] [2021-05-03 15:04:54,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-03 15:04:54,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:04:54,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-03 15:04:54,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-03 15:04:54,870 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) [2021-05-03 15:04:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:04:54,909 INFO L93 Difference]: Finished difference Result 134 states and 254 transitions. [2021-05-03 15:04:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:04:54,910 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 [2021-05-03 15:04:54,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:04:54,910 INFO L225 Difference]: With dead ends: 134 [2021-05-03 15:04:54,911 INFO L226 Difference]: Without dead ends: 129 [2021-05-03 15:04:54,911 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:04:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-03 15:04:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2021-05-03 15:04:54,916 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) [2021-05-03 15:04:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 196 transitions. [2021-05-03 15:04:54,917 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 196 transitions. Word has length 16 [2021-05-03 15:04:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:04:54,917 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 196 transitions. [2021-05-03 15:04:54,917 INFO L481 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) [2021-05-03 15:04:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 196 transitions. [2021-05-03 15:04:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-03 15:04:54,918 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:04:54,918 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 15:04:54,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 15:04:54,918 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 15:04:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:04:54,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2094240753, now seen corresponding path program 2 times [2021-05-03 15:04:54,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:04:54,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882549994] [2021-05-03 15:04:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:04:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:04:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:04:54,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882549994] [2021-05-03 15:04:54,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:04:54,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 15:04:54,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141824975] [2021-05-03 15:04:54,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-03 15:04:54,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:04:54,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-03 15:04:54,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-03 15:04:54,940 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) [2021-05-03 15:04:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:04:54,972 INFO L93 Difference]: Finished difference Result 105 states and 205 transitions. [2021-05-03 15:04:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:04:54,973 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 [2021-05-03 15:04:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:04:54,973 INFO L225 Difference]: With dead ends: 105 [2021-05-03 15:04:54,973 INFO L226 Difference]: Without dead ends: 105 [2021-05-03 15:04:54,974 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:04:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-03 15:04:54,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2021-05-03 15:04:54,978 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) [2021-05-03 15:04:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 166 transitions. [2021-05-03 15:04:54,978 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 166 transitions. Word has length 16 [2021-05-03 15:04:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:04:54,979 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 166 transitions. [2021-05-03 15:04:54,979 INFO L481 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) [2021-05-03 15:04:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 166 transitions. [2021-05-03 15:04:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-03 15:04:54,980 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:04:54,980 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 15:04:54,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-03 15:04:54,980 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 15:04:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:04:54,980 INFO L82 PathProgramCache]: Analyzing trace with hash -902482072, now seen corresponding path program 2 times [2021-05-03 15:04:54,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:04:54,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344162629] [2021-05-03 15:04:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:04:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:04:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:04:55,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344162629] [2021-05-03 15:04:55,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:04:55,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 15:04:55,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889918133] [2021-05-03 15:04:55,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-03 15:04:55,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:04:55,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-03 15:04:55,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-03 15:04:55,015 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) [2021-05-03 15:04:55,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:04:55,057 INFO L93 Difference]: Finished difference Result 105 states and 203 transitions. [2021-05-03 15:04:55,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:04:55,057 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 [2021-05-03 15:04:55,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:04:55,058 INFO L225 Difference]: With dead ends: 105 [2021-05-03 15:04:55,058 INFO L226 Difference]: Without dead ends: 103 [2021-05-03 15:04:55,058 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:04:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-03 15:04:55,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2021-05-03 15:04:55,062 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) [2021-05-03 15:04:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 165 transitions. [2021-05-03 15:04:55,063 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 165 transitions. Word has length 16 [2021-05-03 15:04:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:04:55,063 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 165 transitions. [2021-05-03 15:04:55,063 INFO L481 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) [2021-05-03 15:04:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 165 transitions. [2021-05-03 15:04:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-03 15:04:55,064 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:04:55,064 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 15:04:55,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-03 15:04:55,064 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 15:04:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:04:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash 733312672, now seen corresponding path program 1 times [2021-05-03 15:04:55,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:04:55,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513352001] [2021-05-03 15:04:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:04:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:04:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 15:04:55,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513352001] [2021-05-03 15:04:55,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 15:04:55,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-03 15:04:55,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88268920] [2021-05-03 15:04:55,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 15:04:55,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:04:55,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 15:04:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:04:55,195 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) [2021-05-03 15:04:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:04:55,211 INFO L93 Difference]: Finished difference Result 138 states and 270 transitions. [2021-05-03 15:04:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 15:04:55,211 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 [2021-05-03 15:04:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:04:55,212 INFO L225 Difference]: With dead ends: 138 [2021-05-03 15:04:55,212 INFO L226 Difference]: Without dead ends: 99 [2021-05-03 15:04:55,212 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 15:04:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-03 15:04:55,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2021-05-03 15:04:55,216 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) [2021-05-03 15:04:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 169 transitions. [2021-05-03 15:04:55,217 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 169 transitions. Word has length 21 [2021-05-03 15:04:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:04:55,217 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 169 transitions. [2021-05-03 15:04:55,217 INFO L481 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) [2021-05-03 15:04:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 169 transitions. [2021-05-03 15:04:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-03 15:04:55,218 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 15:04:55,218 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 15:04:55,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-03 15:04:55,218 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 15:04:55,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 15:04:55,218 INFO L82 PathProgramCache]: Analyzing trace with hash -667355684, now seen corresponding path program 2 times [2021-05-03 15:04:55,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 15:04:55,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379185613] [2021-05-03 15:04:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 15:04:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 15:04:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:04:55,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379185613] [2021-05-03 15:04:55,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046379695] [2021-05-03 15:04:55,268 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 [2021-05-03 15:04:55,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 15:04:55,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 15:04:55,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-03 15:04:55,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 15:04:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 15:04:55,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 15:04:55,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-05-03 15:04:55,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768812918] [2021-05-03 15:04:55,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 15:04:55,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 15:04:55,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 15:04:55,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:04:55,354 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) [2021-05-03 15:04:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 15:04:55,376 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2021-05-03 15:04:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 15:04:55,377 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 [2021-05-03 15:04:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 15:04:55,377 INFO L225 Difference]: With dead ends: 85 [2021-05-03 15:04:55,378 INFO L226 Difference]: Without dead ends: 0 [2021-05-03 15:04:55,378 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.7ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-03 15:04:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-03 15:04:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-03 15:04:55,378 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) [2021-05-03 15:04:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-03 15:04:55,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-05-03 15:04:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 15:04:55,378 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-03 15:04:55,379 INFO L481 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) [2021-05-03 15:04:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-03 15:04:55,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-03 15:04:55,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 15:04:55,583 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 03:04:55 BasicIcfg [2021-05-03 15:04:55,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 15:04:55,584 INFO L168 Benchmark]: Toolchain (without parser) took 1803.87 ms. Allocated memory is still 377.5 MB. Free memory was 357.0 MB in the beginning and 318.7 MB in the end (delta: 38.3 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.0 GB. [2021-05-03 15:04:55,584 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 377.5 MB. Free memory was 358.1 MB in the beginning and 358.0 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 15:04:55,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 377.5 MB. Free memory was 357.0 MB in the beginning and 355.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 15:04:55,585 INFO L168 Benchmark]: Boogie Preprocessor took 11.79 ms. Allocated memory is still 377.5 MB. Free memory was 355.5 MB in the beginning and 354.6 MB in the end (delta: 922.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-03 15:04:55,585 INFO L168 Benchmark]: RCFGBuilder took 177.36 ms. Allocated memory is still 377.5 MB. Free memory was 354.5 MB in the beginning and 344.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-05-03 15:04:55,585 INFO L168 Benchmark]: TraceAbstraction took 1575.33 ms. Allocated memory is still 377.5 MB. Free memory was 343.7 MB in the beginning and 318.7 MB in the end (delta: 25.0 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.0 GB. [2021-05-03 15:04:55,586 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 0.09 ms. Allocated memory is still 377.5 MB. Free memory was 358.1 MB in the beginning and 358.0 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 377.5 MB. Free memory was 357.0 MB in the beginning and 355.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.79 ms. Allocated memory is still 377.5 MB. Free memory was 355.5 MB in the beginning and 354.6 MB in the end (delta: 922.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 177.36 ms. Allocated memory is still 377.5 MB. Free memory was 354.5 MB in the beginning and 344.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1575.33 ms. Allocated memory is still 377.5 MB. Free memory was 343.7 MB in the beginning and 318.7 MB in the end (delta: 25.0 MB). Peak memory consumption was 26.7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1490.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 15.8ms, AutomataDifference: 258.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 43.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 149 SDtfs, 127 SDslu, 249 SDs, 0 SdLazy, 181 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 110.5ms 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: 59.1ms AutomataMinimizationTime, 7 MinimizatonAttempts, 128 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.5ms SsaConstructionTime, 127.7ms SatisfiabilityAnalysisTime, 394.0ms 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...