/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/chl/simpl-str-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 22:58:25,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 22:58:25,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 22:58:25,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 22:58:25,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 22:58:25,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 22:58:25,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 22:58:25,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 22:58:25,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 22:58:25,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 22:58:25,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 22:58:25,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 22:58:25,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 22:58:25,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 22:58:25,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 22:58:25,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 22:58:25,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 22:58:25,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 22:58:25,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 22:58:25,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 22:58:25,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 22:58:25,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 22:58:25,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 22:58:25,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 22:58:25,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 22:58:25,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 22:58:25,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 22:58:25,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 22:58:25,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 22:58:25,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 22:58:25,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 22:58:25,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 22:58:25,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 22:58:25,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 22:58:25,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 22:58:25,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 22:58:25,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 22:58:25,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 22:58:25,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 22:58:25,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 22:58:25,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 22:58:25,270 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 22:58:25,301 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 22:58:25,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 22:58:25,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 22:58:25,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 22:58:25,303 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 22:58:25,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 22:58:25,303 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 22:58:25,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 22:58:25,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 22:58:25,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 22:58:25,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 22:58:25,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 22:58:25,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 22:58:25,304 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 22:58:25,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 22:58:25,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 22:58:25,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 22:58:25,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 22:58:25,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 22:58:25,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 22:58:25,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 22:58:25,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 22:58:25,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 22:58:25,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 22:58:25,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 22:58:25,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 22:58:25,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 22:58:25,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 22:58:25,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 22:58:25,306 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 22:58:25,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 22:58:25,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 22:58:25,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 22:58:25,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 22:58:25,552 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 22:58:25,553 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 22:58:25,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-symm.wvr.bpl [2021-07-09 22:58:25,554 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-symm.wvr.bpl' [2021-07-09 22:58:25,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 22:58:25,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 22:58:25,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 22:58:25,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 22:58:25,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 22:58:25,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 22:58:25,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 22:58:25,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 22:58:25,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 22:58:25,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/1) ... [2021-07-09 22:58:25,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 22:58:25,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 22:58:25,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 22:58:25,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 22:58:25,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (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 22:58:25,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 22:58:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 22:58:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 22:58:25,673 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 22:58:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 22:58:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 22:58:25,673 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 22:58:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 22:58:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 22:58:25,674 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 22:58:25,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 22:58:25,789 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 22:58:25,790 INFO L202 PluginConnector]: Adding new model simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:58:25 BoogieIcfgContainer [2021-07-09 22:58:25,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 22:58:25,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 22:58:25,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 22:58:25,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 22:58:25,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:58:25" (1/2) ... [2021-07-09 22:58:25,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf37649 and model type simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:58:25, skipping insertion in model container [2021-07-09 22:58:25,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:58:25" (2/2) ... [2021-07-09 22:58:25,797 INFO L111 eAbstractionObserver]: Analyzing ICFG simpl-str-symm.wvr.bpl [2021-07-09 22:58:25,804 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 22:58:25,805 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 22:58:25,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 22:58:25,807 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 22:58:25,834 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-09 22:58:25,850 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 22:58:25,862 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 22:58:25,862 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 22:58:25,863 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 22:58:25,863 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 22:58:25,863 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 22:58:25,863 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 22:58:25,863 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 22:58:25,863 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 22:58:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 18 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 22:58:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-09 22:58:25,943 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:58:25,943 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:58:25,944 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 22:58:25,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:58:25,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1258387337, now seen corresponding path program 1 times [2021-07-09 22:58:25,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:58:25,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420640052] [2021-07-09 22:58:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:58:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:58:26,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:58:26,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:58:26,193 INFO L142 QuantifierPusher]: treesize reduction 22, result has 67.6 percent of original size [2021-07-09 22:58:26,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-07-09 22:58:26,245 INFO L142 QuantifierPusher]: treesize reduction 26, result has 61.8 percent of original size [2021-07-09 22:58:26,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-09 22:58:26,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:58:26,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:58:26,266 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 22:58:26,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:58:26,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420640052] [2021-07-09 22:58:26,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420640052] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:58:26,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:58:26,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 22:58:26,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509372008] [2021-07-09 22:58:26,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 22:58:26,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:58:26,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 22:58:26,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 22:58:26,280 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 18 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) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:58:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:58:26,325 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-07-09 22:58:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 22:58:26,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-07-09 22:58:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:58:26,330 INFO L225 Difference]: With dead ends: 17 [2021-07-09 22:58:26,330 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 22:58:26,331 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 22:58:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 22:58:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 22:58:26,344 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 22:58:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 22:58:26,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-09 22:58:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:58:26,345 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 22:58:26,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:58:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 22:58:26,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 22:58:26,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 22:58:26,346 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 22:58:26,348 INFO L202 PluginConnector]: Adding new model simpl-str-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 10:58:26 BasicIcfg [2021-07-09 22:58:26,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 22:58:26,349 INFO L168 Benchmark]: Toolchain (without parser) took 767.97 ms. Allocated memory is still 196.1 MB. Free memory was 175.0 MB in the beginning and 154.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2021-07-09 22:58:26,349 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.37 ms. Allocated memory is still 196.1 MB. Free memory is still 176.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:58:26,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.71 ms. Allocated memory is still 196.1 MB. Free memory was 174.9 MB in the beginning and 173.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:58:26,350 INFO L168 Benchmark]: Boogie Preprocessor took 10.17 ms. Allocated memory is still 196.1 MB. Free memory was 173.4 MB in the beginning and 172.5 MB in the end (delta: 849.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:58:26,350 INFO L168 Benchmark]: RCFGBuilder took 178.80 ms. Allocated memory is still 196.1 MB. Free memory was 172.5 MB in the beginning and 163.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-07-09 22:58:26,351 INFO L168 Benchmark]: TraceAbstraction took 555.77 ms. Allocated memory is still 196.1 MB. Free memory was 162.7 MB in the beginning and 154.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. [2021-07-09 22:58:26,353 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 0.37 ms. Allocated memory is still 196.1 MB. Free memory is still 176.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.71 ms. Allocated memory is still 196.1 MB. Free memory was 174.9 MB in the beginning and 173.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.17 ms. Allocated memory is still 196.1 MB. Free memory was 173.4 MB in the beginning and 172.5 MB in the end (delta: 849.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 178.80 ms. Allocated memory is still 196.1 MB. Free memory was 172.5 MB in the beginning and 163.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 555.77 ms. Allocated memory is still 196.1 MB. Free memory was 162.7 MB in the beginning and 154.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.8 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: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - PositiveResult [Line: 36]: 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, 23 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 485.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 60.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 74.5ms, PartialOrderReductionTime: 65.7ms, HoareTripleCheckerStatistics: 10 SDtfs, 4 SDslu, 8 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.9ms SsaConstructionTime, 52.3ms SatisfiabilityAnalysisTime, 220.8ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...