/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/match-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 17:04:29,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 17:04:29,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 17:04:29,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 17:04:29,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 17:04:29,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 17:04:29,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 17:04:29,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 17:04:29,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 17:04:29,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 17:04:29,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 17:04:29,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 17:04:29,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 17:04:29,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 17:04:29,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 17:04:29,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 17:04:29,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 17:04:29,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 17:04:29,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 17:04:29,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 17:04:29,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 17:04:29,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 17:04:29,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 17:04:29,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 17:04:29,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 17:04:29,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 17:04:29,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 17:04:29,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 17:04:29,600 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 [2021-06-16 17:04:29,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 17:04:29,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 17:04:29,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 17:04:29,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 17:04:29,617 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 17:04:29,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 17:04:29,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 17:04:29,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 17:04:29,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 17:04:29,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 17:04:29,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 17:04:29,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 17:04:29,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 17:04:29,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 17:04:29,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 17:04:29,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 17:04:29,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 17:04:29,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 17:04:29,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 17:04:29,620 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 17:04:29,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 17:04:29,620 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 17:04:29,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 17:04:29,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 17:04:29,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 17:04:29,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 17:04:29,870 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 17:04:29,872 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 17:04:29,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-subst.wvr.bpl [2021-06-16 17:04:29,873 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-subst.wvr.bpl' [2021-06-16 17:04:29,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 17:04:29,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 17:04:29,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 17:04:29,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 17:04:29,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 17:04:29,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 17:04:29,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 17:04:29,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 17:04:29,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 17:04:29,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/1) ... [2021-06-16 17:04:29,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 17:04:29,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 17:04:29,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 17:04:29,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 17:04:29,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (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 [2021-06-16 17:04:29,989 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 17:04:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 17:04:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 17:04:29,989 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 17:04:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 17:04:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 17:04:29,990 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 17:04:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 17:04:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 17:04:29,990 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-16 17:04:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-16 17:04:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-16 17:04:29,991 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 17:04:30,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 17:04:30,161 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 17:04:30,164 INFO L202 PluginConnector]: Adding new model match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 05:04:30 BoogieIcfgContainer [2021-06-16 17:04:30,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 17:04:30,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 17:04:30,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 17:04:30,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 17:04:30,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:04:29" (1/2) ... [2021-06-16 17:04:30,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6210ca85 and model type match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 05:04:30, skipping insertion in model container [2021-06-16 17:04:30,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 05:04:30" (2/2) ... [2021-06-16 17:04:30,170 INFO L111 eAbstractionObserver]: Analyzing ICFG match-subst.wvr.bpl [2021-06-16 17:04:30,174 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 17:04:30,174 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 17:04:30,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 17:04:30,174 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 17:04:30,244 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-16 17:04:30,265 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 17:04:30,278 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 17:04:30,279 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 17:04:30,279 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 17:04:30,279 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 17:04:30,279 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 17:04:30,279 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 17:04:30,279 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 17:04:30,279 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 17:04:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 56 states have internal predecessors, (56), 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) [2021-06-16 17:04:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-16 17:04:30,328 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:04:30,328 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:04:30,328 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:04:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:04:30,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1166045766, now seen corresponding path program 1 times [2021-06-16 17:04:30,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:04:30,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927644516] [2021-06-16 17:04:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:04:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:04:30,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:04:30,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:04:30,700 INFO L142 QuantifierPusher]: treesize reduction 5937, result has 3.1 percent of original size [2021-06-16 17:04:30,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-06-16 17:04:30,845 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2021-06-16 17:04:30,860 INFO L142 QuantifierPusher]: treesize reduction 34, result has 74.0 percent of original size [2021-06-16 17:04:30,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-06-16 17:04:30,925 INFO L142 QuantifierPusher]: treesize reduction 37, result has 63.0 percent of original size [2021-06-16 17:04:30,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-16 17:04:30,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:04:30,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:04:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:04:30,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:04:30,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927644516] [2021-06-16 17:04:30,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927644516] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:04:30,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:04:30,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 17:04:30,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695209628] [2021-06-16 17:04:30,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 17:04:30,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:04:30,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 17:04:30,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-16 17:04:30,991 INFO L87 Difference]: Start difference. First operand has 57 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 56 states have internal predecessors, (56), 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 2.8) internal successors, (14), 5 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) [2021-06-16 17:04:31,216 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-16 17:04:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:04:31,221 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2021-06-16 17:04:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 17:04:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2021-06-16 17:04:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:04:31,234 INFO L225 Difference]: With dead ends: 53 [2021-06-16 17:04:31,234 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 17:04:31,236 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 425.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:04:31,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 17:04:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 17:04:31,250 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) [2021-06-16 17:04:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 17:04:31,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-06-16 17:04:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:04:31,252 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 17:04:31,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-06-16 17:04:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 17:04:31,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 17:04:31,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 17:04:31,255 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 17:04:31,257 INFO L202 PluginConnector]: Adding new model match-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 05:04:31 BasicIcfg [2021-06-16 17:04:31,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 17:04:31,259 INFO L168 Benchmark]: Toolchain (without parser) took 1354.21 ms. Allocated memory is still 205.5 MB. Free memory was 185.7 MB in the beginning and 74.2 MB in the end (delta: 111.6 MB). Peak memory consumption was 112.7 MB. Max. memory is 8.0 GB. [2021-06-16 17:04:31,260 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.40 ms. Allocated memory is still 205.5 MB. Free memory is still 186.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 17:04:31,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.80 ms. Allocated memory is still 205.5 MB. Free memory was 185.7 MB in the beginning and 184.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 17:04:31,262 INFO L168 Benchmark]: Boogie Preprocessor took 12.85 ms. Allocated memory is still 205.5 MB. Free memory was 184.2 MB in the beginning and 183.3 MB in the end (delta: 929.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 17:04:31,263 INFO L168 Benchmark]: RCFGBuilder took 228.04 ms. Allocated memory is still 205.5 MB. Free memory was 183.2 MB in the beginning and 172.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-06-16 17:04:31,263 INFO L168 Benchmark]: TraceAbstraction took 1091.68 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 74.2 MB in the end (delta: 98.1 MB). Peak memory consumption was 99.0 MB. Max. memory is 8.0 GB. [2021-06-16 17:04:31,268 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 0.40 ms. Allocated memory is still 205.5 MB. Free memory is still 186.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 17.80 ms. Allocated memory is still 205.5 MB. Free memory was 185.7 MB in the beginning and 184.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.85 ms. Allocated memory is still 205.5 MB. Free memory was 184.2 MB in the beginning and 183.3 MB in the end (delta: 929.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 228.04 ms. Allocated memory is still 205.5 MB. Free memory was 183.2 MB in the beginning and 172.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1091.68 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 74.2 MB in the end (delta: 98.1 MB). Peak memory consumption was 99.0 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: 57, positive: 56, positive conditional: 56, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 56, positive conditional: 0, positive unconditional: 56, 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: 24, positive: 24, positive conditional: 0, positive unconditional: 24, 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: 24, positive: 24, positive conditional: 0, positive unconditional: 24, 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: 56, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 1 - 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 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 977.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.2ms, AutomataDifference: 259.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.5ms, PartialOrderReductionTime: 35.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 13 SDslu, 29 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 425.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.6ms SsaConstructionTime, 78.8ms SatisfiabilityAnalysisTime, 501.8ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 699 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...