/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:01:53,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:01:53,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:01:53,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 23:01:53,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 23:01:54,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 23:01:54,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 23:01:54,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 23:01:54,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 23:01:54,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 23:01:54,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 23:01:54,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 23:01:54,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:01:54,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:01:54,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:01:54,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:01:54,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:01:54,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:01:54,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:01:54,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:01:54,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:01:54,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:01:54,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:01:54,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:01:54,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 23:01:54,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 23:01:54,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 23:01:54,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 23:01:54,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 23:01:54,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 23:01:54,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 23:01:54,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 23:01:54,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 23:01:54,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 23:01:54,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 23:01:54,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 23:01:54,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 23:01:54,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 23:01:54,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 23:01:54,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 23:01:54,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 23:01:54,037 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-Delay.epf [2021-07-09 23:01:54,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:01:54,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:01:54,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:01:54,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:01:54,059 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:01:54,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:01:54,060 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:01:54,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:01:54,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:01:54,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:01:54,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:01:54,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:01:54,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:01:54,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:01:54,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:01:54,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:01:54,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:01:54,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:01:54,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:01:54,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:01:54,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:01:54,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:01:54,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:01:54,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:01:54,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:01:54,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:01:54,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:01:54,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:01:54,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:01:54,063 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:01:54,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:01:54,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:01:54,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:01:54,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:01:54,391 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:01:54,392 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:01:54,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl [2021-07-09 23:01:54,393 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl' [2021-07-09 23:01:54,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:01:54,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:01:54,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:01:54,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:01:54,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:01:54,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:01:54,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:01:54,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:01:54,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:01:54,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/1) ... [2021-07-09 23:01:54,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:01:54,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:01:54,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:01:54,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:01:54,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (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 [2021-07-09 23:01:54,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:01:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:01:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:01:54,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:01:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:01:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:01:54,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:01:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:01:54,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:01:54,543 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 23:01:54,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:01:54,711 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:01:54,713 INFO L202 PluginConnector]: Adding new model bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:01:54 BoogieIcfgContainer [2021-07-09 23:01:54,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:01:54,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:01:54,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:01:54,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:01:54,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:54" (1/2) ... [2021-07-09 23:01:54,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398cb5ff and model type bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:01:54, skipping insertion in model container [2021-07-09 23:01:54,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:01:54" (2/2) ... [2021-07-09 23:01:54,721 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth.wvr.bpl [2021-07-09 23:01:54,726 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:01:54,726 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:01:54,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:01:54,726 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:01:54,762 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-09 23:01:54,781 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 23:01:54,798 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:01:54,799 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:01:54,799 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:01:54,799 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:01:54,799 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:01:54,799 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:01:54,799 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:01:54,799 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:01:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 71 states have internal predecessors, (101), 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) [2021-07-09 23:01:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-09 23:01:54,947 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:54,948 INFO L508 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] [2021-07-09 23:01:54,948 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1170489435, now seen corresponding path program 1 times [2021-07-09 23:01:54,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:54,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373177370] [2021-07-09 23:01:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:55,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:01:55,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:55,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:55,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373177370] [2021-07-09 23:01:55,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373177370] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:55,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:55,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:55,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454690549] [2021-07-09 23:01:55,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:55,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:55,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:55,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:55,089 INFO L87 Difference]: Start difference. First operand has 72 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 71 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:55,107 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2021-07-09 23:01:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:55,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-07-09 23:01:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:55,115 INFO L225 Difference]: With dead ends: 93 [2021-07-09 23:01:55,116 INFO L226 Difference]: Without dead ends: 63 [2021-07-09 23:01:55,117 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:55,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-07-09 23:01:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2021-07-09 23:01:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 60 states have internal predecessors, (88), 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) [2021-07-09 23:01:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2021-07-09 23:01:55,156 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 22 [2021-07-09 23:01:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:55,158 INFO L482 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2021-07-09 23:01:55,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2021-07-09 23:01:55,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-09 23:01:55,159 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:55,160 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:55,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:01:55,160 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -559117902, now seen corresponding path program 1 times [2021-07-09 23:01:55,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:55,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844916259] [2021-07-09 23:01:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:55,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:01:55,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:55,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:55,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844916259] [2021-07-09 23:01:55,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844916259] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:55,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:55,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:01:55,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482599747] [2021-07-09 23:01:55,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 23:01:55,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:55,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 23:01:55,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 23:01:55,246 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-07-09 23:01:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:55,277 INFO L93 Difference]: Finished difference Result 69 states and 96 transitions. [2021-07-09 23:01:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 23:01:55,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-07-09 23:01:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:55,278 INFO L225 Difference]: With dead ends: 69 [2021-07-09 23:01:55,278 INFO L226 Difference]: Without dead ends: 25 [2021-07-09 23:01:55,279 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:01:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-07-09 23:01:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-07-09 23:01:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 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) [2021-07-09 23:01:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-07-09 23:01:55,283 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2021-07-09 23:01:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:55,283 INFO L482 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-07-09 23:01:55,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-07-09 23:01:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-07-09 23:01:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-09 23:01:55,284 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:55,284 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:55,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:01:55,285 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:55,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1095264530, now seen corresponding path program 1 times [2021-07-09 23:01:55,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:55,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414715645] [2021-07-09 23:01:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:55,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:55,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:55,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:55,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414715645] [2021-07-09 23:01:55,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414715645] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:55,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:55,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:01:55,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169043343] [2021-07-09 23:01:55,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 23:01:55,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:55,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 23:01:55,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 23:01:55,323 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-07-09 23:01:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:55,334 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-07-09 23:01:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 23:01:55,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-07-09 23:01:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:55,336 INFO L225 Difference]: With dead ends: 23 [2021-07-09 23:01:55,336 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 23:01:55,336 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:01:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 23:01:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 23:01:55,336 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) [2021-07-09 23:01:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 23:01:55,337 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-07-09 23:01:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:55,337 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 23:01:55,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-07-09 23:01:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 23:01:55,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:01:55,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:01:55,339 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:01:55,341 INFO L202 PluginConnector]: Adding new model bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:01:55 BasicIcfg [2021-07-09 23:01:55,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:01:55,343 INFO L168 Benchmark]: Toolchain (without parser) took 923.83 ms. Allocated memory is still 255.9 MB. Free memory was 235.8 MB in the beginning and 209.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:55,343 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 236.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:01:55,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.28 ms. Allocated memory is still 255.9 MB. Free memory was 235.7 MB in the beginning and 234.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:55,345 INFO L168 Benchmark]: Boogie Preprocessor took 16.11 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.4 MB in the end (delta: 856.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:55,345 INFO L168 Benchmark]: RCFGBuilder took 235.63 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 222.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:55,346 INFO L168 Benchmark]: TraceAbstraction took 626.35 ms. Allocated memory is still 255.9 MB. Free memory was 221.6 MB in the beginning and 209.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:55,348 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 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 236.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.28 ms. Allocated memory is still 255.9 MB. Free memory was 235.7 MB in the beginning and 234.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.11 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.4 MB in the end (delta: 856.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 235.63 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 222.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 626.35 ms. Allocated memory is still 255.9 MB. Free memory was 221.6 MB in the beginning and 209.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 74, positive: 54, positive conditional: 54, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 62, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 62, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 62, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 55, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 62, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 62, unknown conditional: 0, unknown unconditional: 62] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Independence queries for same thread: 12 - PositiveResult [Line: 57]: 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, 45 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 541.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.5ms, AutomataDifference: 88.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 140.0ms, PartialOrderReductionTime: 125.9ms, HoareTripleCheckerStatistics: 73 SDtfs, 38 SDslu, 58 SDs, 0 SdLazy, 10 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.1ms SsaConstructionTime, 47.7ms SatisfiabilityAnalysisTime, 117.5ms InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...