/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/min-max-1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-03 14:59:55,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 14:59:55,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 14:59:55,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 14:59:55,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-03 14:59:55,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-03 14:59:55,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-03 14:59:55,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-03 14:59:55,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-03 14:59:55,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-03 14:59:55,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-03 14:59:55,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-03 14:59:55,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-03 14:59:55,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-03 14:59:55,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-03 14:59:55,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-03 14:59:55,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-03 14:59:55,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 14:59:55,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 14:59:55,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 14:59:55,526 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 14:59:55,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 14:59:55,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 14:59:55,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-03 14:59:55,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-03 14:59:55,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-03 14:59:55,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-03 14:59:55,553 INFO L138 SettingsManager]: * Use SBE=true [2021-05-03 14:59:55,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 14:59:55,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 14:59:55,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 14:59:55,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 14:59:55,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 14:59:55,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 14:59:55,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 14:59:55,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 14:59:55,554 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 14:59:55,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 14:59:55,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 14:59:55,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 14:59:55,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-03 14:59:55,555 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-03 14:59:55,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 14:59:55,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-03 14:59:55,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 14:59:55,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 14:59:55,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 14:59:55,813 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-03 14:59:55,814 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-03 14:59:55,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-1.wvr.bpl [2021-05-03 14:59:55,815 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-1.wvr.bpl' [2021-05-03 14:59:55,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 14:59:55,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 14:59:55,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-03 14:59:55,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-03 14:59:55,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-03 14:59:55,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-03 14:59:55,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 14:59:55,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 14:59:55,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 14:59:55,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/1) ... [2021-05-03 14:59:55,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 14:59:55,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 14:59:55,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 14:59:55,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 14:59:55,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (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 14:59:55,958 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-03 14:59:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-03 14:59:55,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-03 14:59:55,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-03 14:59:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-03 14:59:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-03 14:59:55,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-03 14:59:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 14:59:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 14:59:55,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-03 14:59:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-03 14:59:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-03 14:59:55,960 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 14:59:56,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 14:59:56,116 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-03 14:59:56,116 INFO L202 PluginConnector]: Adding new model min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 02:59:56 BoogieIcfgContainer [2021-05-03 14:59:56,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 14:59:56,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 14:59:56,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 14:59:56,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 14:59:56,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:59:55" (1/2) ... [2021-05-03 14:59:56,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aeff7af and model type min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 02:59:56, skipping insertion in model container [2021-05-03 14:59:56,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 02:59:56" (2/2) ... [2021-05-03 14:59:56,121 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-1.wvr.bpl [2021-05-03 14:59:56,140 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-03 14:59:56,140 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-03 14:59:56,143 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 14:59:56,144 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-03 14:59:56,175 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-03 14:59:56,186 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-03 14:59:56,197 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 14:59:56,198 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 14:59:56,198 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-03 14:59:56,198 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 14:59:56,198 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 14:59:56,198 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 14:59:56,198 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 14:59:56,198 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 14:59:56,204 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 30 transitions, 84 flow [2021-05-03 14:59:56,245 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 232 states have (on average 2.6767241379310347) internal successors, (621), 233 states have internal predecessors, (621), 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 14:59:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 232 states have (on average 2.6767241379310347) internal successors, (621), 233 states have internal predecessors, (621), 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 14:59:56,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-03 14:59:56,255 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:59:56,255 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:59:56,256 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:59:56,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:59:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1495751337, now seen corresponding path program 1 times [2021-05-03 14:59:56,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:59:56,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478519228] [2021-05-03 14:59:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:59:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:59:56,388 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 14:59:56,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478519228] [2021-05-03 14:59:56,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:59:56,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-03 14:59:56,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527118208] [2021-05-03 14:59:56,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 14:59:56,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:59:56,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 14:59:56,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 14:59:56,412 INFO L87 Difference]: Start difference. First operand has 234 states, 232 states have (on average 2.6767241379310347) internal successors, (621), 233 states have internal predecessors, (621), 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 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 14:59:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:59:56,529 INFO L93 Difference]: Finished difference Result 647 states and 1694 transitions. [2021-05-03 14:59:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 14:59:56,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2021-05-03 14:59:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:59:56,548 INFO L225 Difference]: With dead ends: 647 [2021-05-03 14:59:56,548 INFO L226 Difference]: Without dead ends: 389 [2021-05-03 14:59:56,550 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-03 14:59:56,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-05-03 14:59:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 288. [2021-05-03 14:59:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.6167247386759582) internal successors, (751), 287 states have internal predecessors, (751), 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 14:59:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 751 transitions. [2021-05-03 14:59:56,607 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 751 transitions. Word has length 19 [2021-05-03 14:59:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:59:56,607 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 751 transitions. [2021-05-03 14:59:56,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 14:59:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 751 transitions. [2021-05-03 14:59:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-03 14:59:56,609 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:59:56,609 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, 1] [2021-05-03 14:59:56,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 14:59:56,610 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:59:56,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:59:56,611 INFO L82 PathProgramCache]: Analyzing trace with hash -652148012, now seen corresponding path program 1 times [2021-05-03 14:59:56,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:59:56,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857837130] [2021-05-03 14:59:56,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:59:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:59:56,643 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 14:59:56,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857837130] [2021-05-03 14:59:56,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:59:56,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-03 14:59:56,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000237331] [2021-05-03 14:59:56,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 14:59:56,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:59:56,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 14:59:56,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 14:59:56,647 INFO L87 Difference]: Start difference. First operand 288 states and 751 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:59:56,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:59:56,656 INFO L93 Difference]: Finished difference Result 189 states and 447 transitions. [2021-05-03 14:59:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 14:59:56,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-05-03 14:59:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:59:56,657 INFO L225 Difference]: With dead ends: 189 [2021-05-03 14:59:56,657 INFO L226 Difference]: Without dead ends: 172 [2021-05-03 14:59:56,658 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 14:59:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-05-03 14:59:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-05-03 14:59:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.409356725146199) internal successors, (412), 171 states have internal predecessors, (412), 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 14:59:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 412 transitions. [2021-05-03 14:59:56,665 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 412 transitions. Word has length 22 [2021-05-03 14:59:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:59:56,665 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 412 transitions. [2021-05-03 14:59:56,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:59:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 412 transitions. [2021-05-03 14:59:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-03 14:59:56,667 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:59:56,667 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, 1] [2021-05-03 14:59:56,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 14:59:56,667 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:59:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:59:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash -320427391, now seen corresponding path program 1 times [2021-05-03 14:59:56,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:59:56,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647118641] [2021-05-03 14:59:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:59:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:59:56,722 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 14:59:56,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647118641] [2021-05-03 14:59:56,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:59:56,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 14:59:56,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693255176] [2021-05-03 14:59:56,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-03 14:59:56,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:59:56,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-03 14:59:56,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-03 14:59:56,725 INFO L87 Difference]: Start difference. First operand 172 states and 412 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:59:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:59:56,729 INFO L93 Difference]: Finished difference Result 35 states and 66 transitions. [2021-05-03 14:59:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 14:59:56,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-05-03 14:59:56,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:59:56,730 INFO L225 Difference]: With dead ends: 35 [2021-05-03 14:59:56,730 INFO L226 Difference]: Without dead ends: 0 [2021-05-03 14:59:56,730 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-03 14:59:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-03 14:59:56,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-03 14:59:56,731 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 14:59:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-03 14:59:56,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-05-03 14:59:56,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:59:56,735 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-03 14:59:56,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 14:59:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-03 14:59:56,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-03 14:59:56,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 14:59:56,740 INFO L202 PluginConnector]: Adding new model min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 02:59:56 BasicIcfg [2021-05-03 14:59:56,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 14:59:56,741 INFO L168 Benchmark]: Toolchain (without parser) took 865.61 ms. Allocated memory is still 358.6 MB. Free memory was 338.5 MB in the beginning and 298.7 MB in the end (delta: 39.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.0 GB. [2021-05-03 14:59:56,741 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 358.6 MB. Free memory was 339.7 MB in the beginning and 339.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 14:59:56,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.79 ms. Allocated memory is still 358.6 MB. Free memory was 338.4 MB in the beginning and 337.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-03 14:59:56,743 INFO L168 Benchmark]: Boogie Preprocessor took 10.00 ms. Allocated memory is still 358.6 MB. Free memory was 337.0 MB in the beginning and 336.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 14:59:56,744 INFO L168 Benchmark]: RCFGBuilder took 212.55 ms. Allocated memory is still 358.6 MB. Free memory was 335.9 MB in the beginning and 324.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-05-03 14:59:56,748 INFO L168 Benchmark]: TraceAbstraction took 622.12 ms. Allocated memory is still 358.6 MB. Free memory was 324.0 MB in the beginning and 298.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.0 GB. [2021-05-03 14:59:56,750 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 0.10 ms. Allocated memory is still 358.6 MB. Free memory was 339.7 MB in the beginning and 339.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.79 ms. Allocated memory is still 358.6 MB. Free memory was 338.4 MB in the beginning and 337.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.00 ms. Allocated memory is still 358.6 MB. Free memory was 337.0 MB in the beginning and 336.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 212.55 ms. Allocated memory is still 358.6 MB. Free memory was 335.9 MB in the beginning and 324.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 622.12 ms. Allocated memory is still 358.6 MB. Free memory was 324.0 MB in the beginning and 298.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 58]: 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 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 539.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 13.0ms, AutomataDifference: 173.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 46.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 87 SDslu, 86 SDs, 0 SdLazy, 34 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 69.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=1, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 101 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.0ms SsaConstructionTime, 28.6ms SatisfiabilityAnalysisTime, 126.7ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...