/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/ticket-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:05:40,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:05:40,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:05:40,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 23:05:40,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 23:05:40,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 23:05:40,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 23:05:40,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 23:05:40,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 23:05:40,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 23:05:40,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 23:05:40,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 23:05:40,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:05:40,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:05:40,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:05:40,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:05:40,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:05:40,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:05:40,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:05:40,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:05:40,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:05:40,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:05:40,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:05:40,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:05:40,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 23:05:40,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 23:05:40,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 23:05:40,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 23:05:40,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 23:05:40,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 23:05:40,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 23:05:40,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 23:05:40,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 23:05:40,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 23:05:40,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 23:05:40,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 23:05:40,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 23:05:40,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 23:05:40,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 23:05:40,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 23:05:40,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 23:05:40,767 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 23:05:40,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:05:40,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:05:40,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:05:40,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:05:40,806 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:05:40,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:05:40,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:05:40,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:05:40,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:05:40,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:05:40,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:05:40,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:05:40,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:05:40,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:05:40,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:05:40,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:05:40,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:05:40,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:05:40,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:05:40,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:05:40,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:05:40,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:05:40,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:05:40,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:05:40,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:05:40,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:05:40,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:05:40,811 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:05:40,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:05:40,811 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:05:40,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:05:41,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:05:41,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:05:41,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:05:41,149 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:05:41,150 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:05:41,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl [2021-07-09 23:05:41,151 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl' [2021-07-09 23:05:41,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:05:41,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:05:41,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:05:41,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:05:41,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:05:41,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:05:41,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:05:41,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:05:41,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:05:41,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/1) ... [2021-07-09 23:05:41,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:05:41,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:05:41,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:05:41,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:05:41,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (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 23:05:41,295 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:05:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:05:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:05:41,298 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:05:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:05:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:05:41,298 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:05:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:05:41,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:05:41,299 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 23:05:41,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:05:41,498 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:05:41,500 INFO L202 PluginConnector]: Adding new model ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:05:41 BoogieIcfgContainer [2021-07-09 23:05:41,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:05:41,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:05:41,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:05:41,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:05:41,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:05:41" (1/2) ... [2021-07-09 23:05:41,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76608baa and model type ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:05:41, skipping insertion in model container [2021-07-09 23:05:41,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:05:41" (2/2) ... [2021-07-09 23:05:41,514 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-2.wvr.bpl [2021-07-09 23:05:41,519 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:05:41,519 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:05:41,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:05:41,521 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:05:41,586 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-09 23:05:41,624 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 23:05:41,639 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:05:41,639 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:05:41,639 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:05:41,640 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:05:41,640 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:05:41,640 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:05:41,640 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:05:41,640 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:05:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 47 states have (on average 1.574468085106383) internal successors, (74), 59 states have internal predecessors, (74), 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 23:05:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 23:05:41,759 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:41,760 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:05:41,760 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:41,765 INFO L82 PathProgramCache]: Analyzing trace with hash 345569571, now seen corresponding path program 1 times [2021-07-09 23:05:41,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:41,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815277216] [2021-07-09 23:05:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:41,939 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 23:05:41,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:05:41,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:41,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:41,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:41,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:05:41,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:41,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:41,999 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 23:05:42,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:42,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815277216] [2021-07-09 23:05:42,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815277216] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:42,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:42,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:05:42,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584696677] [2021-07-09 23:05:42,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 23:05:42,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:42,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 23:05:42,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:05:42,022 INFO L87 Difference]: Start difference. First operand has 60 states, 47 states have (on average 1.574468085106383) internal successors, (74), 59 states have internal predecessors, (74), 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 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 23:05:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:42,081 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2021-07-09 23:05:42,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 23:05:42,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-07-09 23:05:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:42,089 INFO L225 Difference]: With dead ends: 76 [2021-07-09 23:05:42,089 INFO L226 Difference]: Without dead ends: 25 [2021-07-09 23:05:42,090 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:05:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-07-09 23:05:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-07-09 23:05:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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 23:05:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-07-09 23:05:42,119 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2021-07-09 23:05:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:42,121 INFO L482 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-07-09 23:05:42,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 23:05:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-07-09 23:05:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 23:05:42,123 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:42,123 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:05:42,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:05:42,124 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash -512447167, now seen corresponding path program 2 times [2021-07-09 23:05:42,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:42,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929288253] [2021-07-09 23:05:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:42,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:42,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:42,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:42,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:42,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:42,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:42,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:42,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:42,187 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 23:05:42,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:42,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929288253] [2021-07-09 23:05:42,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929288253] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:42,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:42,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:05:42,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322253167] [2021-07-09 23:05:42,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 23:05:42,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:42,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 23:05:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:05:42,190 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 23:05:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:42,218 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-07-09 23:05:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 23:05:42,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-07-09 23:05:42,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:42,219 INFO L225 Difference]: With dead ends: 26 [2021-07-09 23:05:42,220 INFO L226 Difference]: Without dead ends: 24 [2021-07-09 23:05:42,220 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:05:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-07-09 23:05:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-07-09 23:05:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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 23:05:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-07-09 23:05:42,224 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2021-07-09 23:05:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:42,224 INFO L482 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-07-09 23:05:42,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 23:05:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-07-09 23:05:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 23:05:42,225 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:05:42,225 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:05:42,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:05:42,225 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:05:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:05:42,225 INFO L82 PathProgramCache]: Analyzing trace with hash 293792117, now seen corresponding path program 3 times [2021-07-09 23:05:42,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:05:42,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154888239] [2021-07-09 23:05:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:05:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:05:42,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:42,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:05:42,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:42,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:42,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:42,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:05:42,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:05:42,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:05:42,287 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 23:05:42,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:05:42,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154888239] [2021-07-09 23:05:42,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154888239] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:05:42,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:05:42,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:05:42,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232397697] [2021-07-09 23:05:42,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 23:05:42,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:05:42,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 23:05:42,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:05:42,296 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 23:05:42,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:05:42,320 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-07-09 23:05:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 23:05:42,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-07-09 23:05:42,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:05:42,321 INFO L225 Difference]: With dead ends: 10 [2021-07-09 23:05:42,321 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 23:05:42,321 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:05:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 23:05:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 23:05:42,322 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 23:05:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 23:05:42,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-07-09 23:05:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:05:42,322 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 23:05:42,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 23:05:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 23:05:42,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:05:42,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:05:42,325 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:05:42,327 INFO L202 PluginConnector]: Adding new model ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:05:42 BasicIcfg [2021-07-09 23:05:42,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:05:42,328 INFO L168 Benchmark]: Toolchain (without parser) took 1152.01 ms. Allocated memory is still 199.2 MB. Free memory was 179.3 MB in the beginning and 156.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:42,329 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 199.2 MB. Free memory was 180.4 MB in the beginning and 180.3 MB in the end (delta: 92.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:05:42,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.17 ms. Allocated memory is still 199.2 MB. Free memory was 179.2 MB in the beginning and 177.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:42,333 INFO L168 Benchmark]: Boogie Preprocessor took 16.58 ms. Allocated memory is still 199.2 MB. Free memory was 177.7 MB in the beginning and 176.9 MB in the end (delta: 805.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:42,334 INFO L168 Benchmark]: RCFGBuilder took 277.64 ms. Allocated memory is still 199.2 MB. Free memory was 176.8 MB in the beginning and 165.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:42,334 INFO L168 Benchmark]: TraceAbstraction took 824.74 ms. Allocated memory is still 199.2 MB. Free memory was 164.9 MB in the beginning and 156.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 8.0 GB. [2021-07-09 23:05:42,339 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 0.16 ms. Allocated memory is still 199.2 MB. Free memory was 180.4 MB in the beginning and 180.3 MB in the end (delta: 92.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.17 ms. Allocated memory is still 199.2 MB. Free memory was 179.2 MB in the beginning and 177.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.58 ms. Allocated memory is still 199.2 MB. Free memory was 177.7 MB in the beginning and 176.9 MB in the end (delta: 805.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 277.64 ms. Allocated memory is still 199.2 MB. Free memory was 176.8 MB in the beginning and 165.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 824.74 ms. Allocated memory is still 199.2 MB. Free memory was 164.9 MB in the beginning and 156.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.7 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: 41, positive: 37, positive conditional: 37, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 41, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 41, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 41, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 41, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 41, unknown conditional: 0, unknown unconditional: 41] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Independence queries for same thread: 0 - PositiveResult [Line: 50]: 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, 38 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 686.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 17.1ms, AutomataDifference: 142.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 103.6ms, PartialOrderReductionTime: 75.1ms, HoareTripleCheckerStatistics: 32 SDtfs, 24 SDslu, 57 SDs, 0 SdLazy, 51 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.0ms SsaConstructionTime, 68.1ms SatisfiabilityAnalysisTime, 208.7ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 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...