/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr03.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 11:59:54,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 11:59:54,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 11:59:54,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-30 11:59:54,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-30 11:59:54,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-30 11:59:54,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-30 11:59:54,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-30 11:59:54,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-30 11:59:54,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-30 11:59:54,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-30 11:59:54,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-30 11:59:54,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-30 11:59:54,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-30 11:59:54,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-30 11:59:54,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-30 11:59:54,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-30 11:59:54,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-30 11:59:54,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-30 11:59:54,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-30 11:59:54,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-30 11:59:54,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-30 11:59:54,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-30 11:59:54,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-30 11:59:54,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-30 11:59:54,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-30 11:59:54,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-30 11:59:54,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-30 11:59:54,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-30 11:59:54,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-30 11:59:54,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-30 11:59:54,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-30 11:59:54,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-30 11:59:54,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-30 11:59:54,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-30 11:59:54,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-30 11:59:54,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-30 11:59:54,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-30 11:59:54,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-30 11:59:54,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-30 11:59:54,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-30 11:59:54,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-30 11:59:54,329 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 11:59:54,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 11:59:54,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-30 11:59:54,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-30 11:59:54,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 11:59:54,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 11:59:54,331 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 11:59:54,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 11:59:54,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 11:59:54,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 11:59:54,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 11:59:54,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 11:59:54,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 11:59:54,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 11:59:54,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 11:59:54,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 11:59:54,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 11:59:54,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 11:59:54,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 11:59:54,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 11:59:54,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 11:59:54,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 11:59:54,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-30 11:59:54,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 11:59:54,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 11:59:54,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 11:59:54,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 11:59:54,557 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 11:59:54,559 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 11:59:54,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr03.bpl [2021-06-30 11:59:54,559 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr03.bpl' [2021-06-30 11:59:54,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 11:59:54,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 11:59:54,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 11:59:54,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 11:59:54,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 11:59:54,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 11:59:54,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 11:59:54,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 11:59:54,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 11:59:54,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... [2021-06-30 11:59:54,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 11:59:54,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 11:59:54,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 11:59:54,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 11:59:54,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 11:59:54,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 11:59:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 11:59:54,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 11:59:54,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 11:59:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 11:59:54,677 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 11:59:54,677 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-30 11:59:54,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 11:59:54,785 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 11:59:54,786 INFO L202 PluginConnector]: Adding new model incr-decr03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 11:59:54 BoogieIcfgContainer [2021-06-30 11:59:54,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 11:59:54,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 11:59:54,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 11:59:54,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 11:59:54,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 11:59:54" (1/2) ... [2021-06-30 11:59:54,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629e7abe and model type incr-decr03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 11:59:54, skipping insertion in model container [2021-06-30 11:59:54,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 11:59:54" (2/2) ... [2021-06-30 11:59:54,791 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr03.bpl [2021-06-30 11:59:54,798 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-30 11:59:54,798 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 11:59:54,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 11:59:54,799 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 11:59:54,821 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-30 11:59:54,845 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-30 11:59:54,878 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 11:59:54,878 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 11:59:54,878 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 11:59:54,878 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 11:59:54,878 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 11:59:54,878 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 11:59:54,878 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 11:59:54,879 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 11:59:54,884 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 22 transitions, 68 flow [2021-06-30 11:59:54,916 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 54 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 54 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-30 11:59:54,922 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:59:54,923 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 11:59:54,923 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 11:59:54,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:59:54,926 INFO L82 PathProgramCache]: Analyzing trace with hash -318733643, now seen corresponding path program 1 times [2021-06-30 11:59:54,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:59:54,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222087291] [2021-06-30 11:59:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:59:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 11:59:55,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:59:55,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222087291] [2021-06-30 11:59:55,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222087291] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:59:55,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:59:55,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-30 11:59:55,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486100772] [2021-06-30 11:59:55,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-30 11:59:55,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:59:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-30 11:59:55,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 11:59:55,057 INFO L87 Difference]: Start difference. First operand has 57 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 54 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.5) 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) [2021-06-30 11:59:55,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:59:55,099 INFO L93 Difference]: Finished difference Result 76 states and 208 transitions. [2021-06-30 11:59:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-30 11:59:55,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) 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 [2021-06-30 11:59:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:59:55,107 INFO L225 Difference]: With dead ends: 76 [2021-06-30 11:59:55,107 INFO L226 Difference]: Without dead ends: 72 [2021-06-30 11:59:55,108 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 11:59:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-06-30 11:59:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-06-30 11:59:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 199 transitions. [2021-06-30 11:59:55,146 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 199 transitions. Word has length 11 [2021-06-30 11:59:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:59:55,147 INFO L482 AbstractCegarLoop]: Abstraction has 72 states and 199 transitions. [2021-06-30 11:59:55,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) 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) [2021-06-30 11:59:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 199 transitions. [2021-06-30 11:59:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-30 11:59:55,149 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:59:55,149 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 11:59:55,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-30 11:59:55,149 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 11:59:55,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:59:55,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2113875315, now seen corresponding path program 1 times [2021-06-30 11:59:55,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:59:55,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024674904] [2021-06-30 11:59:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:59:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:59:55,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:59:55,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024674904] [2021-06-30 11:59:55,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024674904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 11:59:55,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 11:59:55,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 11:59:55,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075308610] [2021-06-30 11:59:55,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 11:59:55,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:59:55,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 11:59:55,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:59:55,242 INFO L87 Difference]: Start difference. First operand 72 states and 199 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:59:55,268 INFO L93 Difference]: Finished difference Result 112 states and 314 transitions. [2021-06-30 11:59:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 11:59:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-06-30 11:59:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:59:55,270 INFO L225 Difference]: With dead ends: 112 [2021-06-30 11:59:55,270 INFO L226 Difference]: Without dead ends: 88 [2021-06-30 11:59:55,271 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 11:59:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-06-30 11:59:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2021-06-30 11:59:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.857142857142857) internal successors, (220), 77 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 220 transitions. [2021-06-30 11:59:55,277 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 220 transitions. Word has length 13 [2021-06-30 11:59:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:59:55,277 INFO L482 AbstractCegarLoop]: Abstraction has 78 states and 220 transitions. [2021-06-30 11:59:55,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 220 transitions. [2021-06-30 11:59:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-30 11:59:55,278 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:59:55,278 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 11:59:55,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-30 11:59:55,278 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 11:59:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:59:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1909221943, now seen corresponding path program 1 times [2021-06-30 11:59:55,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:59:55,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127692001] [2021-06-30 11:59:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:59:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 11:59:55,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:59:55,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127692001] [2021-06-30 11:59:55,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127692001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 11:59:55,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603615162] [2021-06-30 11:59:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 11:59:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:55,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-30 11:59:55,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 11:59:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 11:59:55,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603615162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 11:59:55,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 11:59:55,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-30 11:59:55,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713111183] [2021-06-30 11:59:55,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 11:59:55,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:59:55,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 11:59:55,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:59:55,492 INFO L87 Difference]: Start difference. First operand 78 states and 220 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:59:55,533 INFO L93 Difference]: Finished difference Result 117 states and 332 transitions. [2021-06-30 11:59:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 11:59:55,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-06-30 11:59:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:59:55,534 INFO L225 Difference]: With dead ends: 117 [2021-06-30 11:59:55,534 INFO L226 Difference]: Without dead ends: 63 [2021-06-30 11:59:55,534 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 11:59:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-06-30 11:59:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2021-06-30 11:59:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.8181818181818183) internal successors, (155), 55 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 155 transitions. [2021-06-30 11:59:55,538 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 155 transitions. Word has length 15 [2021-06-30 11:59:55,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:59:55,538 INFO L482 AbstractCegarLoop]: Abstraction has 56 states and 155 transitions. [2021-06-30 11:59:55,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,539 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 155 transitions. [2021-06-30 11:59:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-30 11:59:55,539 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 11:59:55,539 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 11:59:55,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-30 11:59:55,753 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 11:59:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 11:59:55,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1025387113, now seen corresponding path program 1 times [2021-06-30 11:59:55,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 11:59:55,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38517182] [2021-06-30 11:59:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 11:59:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:59:55,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 11:59:55,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38517182] [2021-06-30 11:59:55,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38517182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 11:59:55,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532434070] [2021-06-30 11:59:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 11:59:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 11:59:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-30 11:59:55,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 11:59:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 11:59:55,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532434070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 11:59:55,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 11:59:55,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-30 11:59:55,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638083056] [2021-06-30 11:59:55,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-30 11:59:55,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 11:59:55,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-30 11:59:55,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-30 11:59:55,897 INFO L87 Difference]: Start difference. First operand 56 states and 155 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 11:59:55,957 INFO L93 Difference]: Finished difference Result 55 states and 154 transitions. [2021-06-30 11:59:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-30 11:59:55,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-06-30 11:59:55,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 11:59:55,958 INFO L225 Difference]: With dead ends: 55 [2021-06-30 11:59:55,958 INFO L226 Difference]: Without dead ends: 0 [2021-06-30 11:59:55,958 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-30 11:59:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-30 11:59:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-30 11:59:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-30 11:59:55,958 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-06-30 11:59:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 11:59:55,958 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-30 11:59:55,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 11:59:55,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-30 11:59:55,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-30 11:59:56,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 11:59:56,181 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-30 11:59:56,183 INFO L202 PluginConnector]: Adding new model incr-decr03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.06 11:59:56 BasicIcfg [2021-06-30 11:59:56,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-30 11:59:56,202 INFO L168 Benchmark]: Toolchain (without parser) took 1626.70 ms. Allocated memory is still 207.6 MB. Free memory was 187.5 MB in the beginning and 192.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. [2021-06-30 11:59:56,202 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 207.6 MB. Free memory is still 188.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-30 11:59:56,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.81 ms. Allocated memory is still 207.6 MB. Free memory was 187.5 MB in the beginning and 186.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-30 11:59:56,203 INFO L168 Benchmark]: Boogie Preprocessor took 11.06 ms. Allocated memory is still 207.6 MB. Free memory was 186.0 MB in the beginning and 185.1 MB in the end (delta: 887.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-30 11:59:56,203 INFO L168 Benchmark]: RCFGBuilder took 178.84 ms. Allocated memory is still 207.6 MB. Free memory was 185.1 MB in the beginning and 176.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-06-30 11:59:56,203 INFO L168 Benchmark]: TraceAbstraction took 1413.34 ms. Allocated memory is still 207.6 MB. Free memory was 175.6 MB in the beginning and 192.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 37.4 MB. Max. memory is 8.0 GB. [2021-06-30 11:59:56,204 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 0.11 ms. Allocated memory is still 207.6 MB. Free memory is still 188.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.81 ms. Allocated memory is still 207.6 MB. Free memory was 187.5 MB in the beginning and 186.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.06 ms. Allocated memory is still 207.6 MB. Free memory was 186.0 MB in the beginning and 185.1 MB in the end (delta: 887.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 178.84 ms. Allocated memory is still 207.6 MB. Free memory was 185.1 MB in the beginning and 176.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1413.34 ms. Allocated memory is still 207.6 MB. Free memory was 175.6 MB in the beginning and 192.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 37.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1308.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 8.3ms, AutomataDifference: 198.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 37.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 77 SDtfs, 31 SDslu, 131 SDs, 0 SdLazy, 165 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.1ms SsaConstructionTime, 70.4ms SatisfiabilityAnalysisTime, 345.3ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 534 SizeOfPredicates, 0 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 3/11 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...