/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 19:42:36,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 19:42:36,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 19:42:36,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 19:42:36,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 19:42:36,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 19:42:36,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 19:42:36,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 19:42:36,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 19:42:36,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 19:42:36,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 19:42:36,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 19:42:36,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 19:42:36,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 19:42:36,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 19:42:36,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 19:42:36,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 19:42:36,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 19:42:36,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 19:42:36,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 19:42:36,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 19:42:36,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 19:42:36,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 19:42:36,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 19:42:36,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-13 19:42:36,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-13 19:42:36,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-13 19:42:36,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-13 19:42:36,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-13 19:42:36,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-13 19:42:36,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-13 19:42:36,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-13 19:42:36,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-13 19:42:36,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-13 19:42:36,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-13 19:42:36,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-13 19:42:36,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-13 19:42:36,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-13 19:42:36,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 19:42:36,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 19:42:36,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 19:42:36,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-13 19:42:36,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 19:42:36,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 19:42:36,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 19:42:36,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 19:42:36,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 19:42:36,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 19:42:36,375 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 19:42:36,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 19:42:36,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 19:42:36,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 19:42:36,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 19:42:36,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 19:42:36,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 19:42:36,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 19:42:36,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 19:42:36,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 19:42:36,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 19:42:36,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 19:42:36,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 19:42:36,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 19:42:36,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 19:42:36,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 19:42:36,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 19:42:36,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:42:36,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 19:42:36,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 19:42:36,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 19:42:36,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 19:42:36,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 19:42:36,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 19:42:36,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 19:42:36,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 19:42:36,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 19:42:36,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 19:42:36,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 19:42:36,638 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 19:42:36,639 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 19:42:36,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-trans.wvr.bpl [2021-07-13 19:42:36,639 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/sre-trans.wvr.bpl' [2021-07-13 19:42:36,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 19:42:36,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 19:42:36,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 19:42:36,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 19:42:36,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 19:42:36,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 19:42:36,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 19:42:36,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 19:42:36,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 19:42:36,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/1) ... [2021-07-13 19:42:36,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 19:42:36,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 19:42:36,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 19:42:36,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 19:42:36,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (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 [2021-07-13 19:42:36,759 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 19:42:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 19:42:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 19:42:36,760 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 19:42:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 19:42:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 19:42:36,760 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 19:42:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 19:42:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 19:42:36,760 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 19:42:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 19:42:36,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 19:42:36,762 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 19:42:36,890 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 19:42:36,891 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 19:42:36,892 INFO L202 PluginConnector]: Adding new model sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:42:36 BoogieIcfgContainer [2021-07-13 19:42:36,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 19:42:36,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 19:42:36,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 19:42:36,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 19:42:36,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:42:36" (1/2) ... [2021-07-13 19:42:36,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133d3622 and model type sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:42:36, skipping insertion in model container [2021-07-13 19:42:36,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:42:36" (2/2) ... [2021-07-13 19:42:36,897 INFO L111 eAbstractionObserver]: Analyzing ICFG sre-trans.wvr.bpl [2021-07-13 19:42:36,900 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 19:42:36,900 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 19:42:36,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 19:42:36,901 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 19:42:36,931 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-13 19:42:36,947 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 19:42:36,959 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:42:36,959 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:42:36,959 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:42:36,959 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:42:36,959 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:42:36,959 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:42:36,959 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:42:36,960 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:42:36,965 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2021-07-13 19:42:37,001 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 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) [2021-07-13 19:42:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 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) [2021-07-13 19:42:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:42:37,009 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:42:37,009 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:42:37,010 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:42:37,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:42:37,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1166046022, now seen corresponding path program 1 times [2021-07-13 19:42:37,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:42:37,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566030935] [2021-07-13 19:42:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:42:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:42:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:42:37,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:42:37,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566030935] [2021-07-13 19:42:37,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566030935] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:42:37,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:42:37,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:42:37,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820375560] [2021-07-13 19:42:37,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:42:37,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:42:37,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:42:37,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:42:37,343 INFO L87 Difference]: Start difference. First operand has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 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 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-07-13 19:42:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:42:37,404 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2021-07-13 19:42:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 19:42:37,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-07-13 19:42:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:42:37,411 INFO L225 Difference]: With dead ends: 81 [2021-07-13 19:42:37,411 INFO L226 Difference]: Without dead ends: 42 [2021-07-13 19:42:37,412 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:42:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-07-13 19:42:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-07-13 19:42:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.853658536585366) internal successors, (76), 41 states have internal predecessors, (76), 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) [2021-07-13 19:42:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2021-07-13 19:42:37,434 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 14 [2021-07-13 19:42:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:42:37,435 INFO L482 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2021-07-13 19:42:37,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-07-13 19:42:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2021-07-13 19:42:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-13 19:42:37,436 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:42:37,436 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:42:37,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 19:42:37,436 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:42:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:42:37,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2138675526, now seen corresponding path program 2 times [2021-07-13 19:42:37,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:42:37,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123508182] [2021-07-13 19:42:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:42:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:42:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:42:37,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:42:37,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123508182] [2021-07-13 19:42:37,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123508182] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:42:37,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:42:37,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:42:37,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530473974] [2021-07-13 19:42:37,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:42:37,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:42:37,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:42:37,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:42:37,522 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-07-13 19:42:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:42:37,574 INFO L93 Difference]: Finished difference Result 40 states and 74 transitions. [2021-07-13 19:42:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 19:42:37,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-07-13 19:42:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:42:37,576 INFO L225 Difference]: With dead ends: 40 [2021-07-13 19:42:37,576 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 19:42:37,576 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:42:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 19:42:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 19:42:37,577 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) [2021-07-13 19:42:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 19:42:37,577 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-07-13 19:42:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:42:37,577 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 19:42:37,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-07-13 19:42:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 19:42:37,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 19:42:37,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 19:42:37,580 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:42:37,582 INFO L202 PluginConnector]: Adding new model sre-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:42:37 BasicIcfg [2021-07-13 19:42:37,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:42:37,583 INFO L168 Benchmark]: Toolchain (without parser) took 909.06 ms. Allocated memory is still 225.4 MB. Free memory was 206.4 MB in the beginning and 160.6 MB in the end (delta: 45.8 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2021-07-13 19:42:37,584 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 225.4 MB. Free memory is still 207.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:42:37,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.53 ms. Allocated memory is still 225.4 MB. Free memory was 206.3 MB in the beginning and 204.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 19:42:37,586 INFO L168 Benchmark]: Boogie Preprocessor took 9.79 ms. Allocated memory is still 225.4 MB. Free memory was 204.9 MB in the beginning and 203.9 MB in the end (delta: 929.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:42:37,586 INFO L168 Benchmark]: RCFGBuilder took 187.01 ms. Allocated memory is still 225.4 MB. Free memory was 203.9 MB in the beginning and 194.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-07-13 19:42:37,587 INFO L168 Benchmark]: TraceAbstraction took 689.15 ms. Allocated memory is still 225.4 MB. Free memory was 193.6 MB in the beginning and 160.6 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.7 MB. Max. memory is 8.0 GB. [2021-07-13 19:42:37,591 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 0.08 ms. Allocated memory is still 225.4 MB. Free memory is still 207.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.53 ms. Allocated memory is still 225.4 MB. Free memory was 206.3 MB in the beginning and 204.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.79 ms. Allocated memory is still 225.4 MB. Free memory was 204.9 MB in the beginning and 203.9 MB in the end (delta: 929.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 187.01 ms. Allocated memory is still 225.4 MB. Free memory was 203.9 MB in the beginning and 194.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 689.15 ms. Allocated memory is still 225.4 MB. Free memory was 193.6 MB in the beginning and 160.6 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 621.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.0ms, AutomataDifference: 140.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 23 SDslu, 32 SDs, 0 SdLazy, 16 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 183.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.9ms SsaConstructionTime, 41.9ms SatisfiabilityAnalysisTime, 275.7ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...