/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 16:14:28,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 16:14:28,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 16:14:28,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 16:14:28,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 16:14:28,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 16:14:28,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 16:14:28,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 16:14:28,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 16:14:28,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 16:14:28,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 16:14:28,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 16:14:28,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 16:14:28,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 16:14:28,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 16:14:28,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 16:14:28,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 16:14:28,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 16:14:28,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 16:14:28,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 16:14:28,199 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-SemanticLbe.epf [2021-03-11 16:14:28,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 16:14:28,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 16:14:28,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 16:14:28,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 16:14:28,220 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 16:14:28,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 16:14:28,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 16:14:28,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 16:14:28,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 16:14:28,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 16:14:28,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 16:14:28,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 16:14:28,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 16:14:28,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 16:14:28,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 16:14:28,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 16:14:28,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 16:14:28,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 16:14:28,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 16:14:28,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 16:14:28,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 16:14:28,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 16:14:28,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 16:14:28,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 16:14:28,551 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 16:14:28,552 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 16:14:28,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl [2021-03-11 16:14:28,553 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl' [2021-03-11 16:14:28,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 16:14:28,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 16:14:28,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 16:14:28,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 16:14:28,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 16:14:28,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 16:14:28,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 16:14:28,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 16:14:28,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 16:14:28,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/1) ... [2021-03-11 16:14:28,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 16:14:28,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 16:14:28,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 16:14:28,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 16:14:28,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (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 [2021-03-11 16:14:28,695 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 16:14:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 16:14:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 16:14:28,697 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 16:14:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 16:14:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 16:14:28,697 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 16:14:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 16:14:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 16:14:28,698 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 16:14:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 16:14:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 16:14:28,699 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 16:14:28,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 16:14:28,843 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 16:14:28,845 INFO L202 PluginConnector]: Adding new model simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:14:28 BoogieIcfgContainer [2021-03-11 16:14:28,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 16:14:28,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 16:14:28,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 16:14:28,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 16:14:28,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:14:28" (1/2) ... [2021-03-11 16:14:28,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153e60b6 and model type simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:14:28, skipping insertion in model container [2021-03-11 16:14:28,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:14:28" (2/2) ... [2021-03-11 16:14:28,854 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-equiv.wvr.bpl [2021-03-11 16:14:28,861 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 16:14:28,861 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 16:14:28,865 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 16:14:28,866 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 16:14:28,933 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 16:14:28,962 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 16:14:28,978 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 16:14:28,978 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 16:14:28,978 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 16:14:28,978 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 16:14:28,978 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 16:14:28,978 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 16:14:28,978 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 16:14:28,979 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 16:14:28,988 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 16:14:28,997 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 23 transitions, 70 flow [2021-03-11 16:14:28,999 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 23 transitions, 70 flow [2021-03-11 16:14:29,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 23 transitions, 70 flow [2021-03-11 16:14:29,018 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-11 16:14:29,018 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 16:14:29,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 20 events. 0/20 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 16:14:29,020 INFO L116 LiptonReduction]: Number of co-enabled transitions 84 [2021-03-11 16:14:29,240 INFO L131 LiptonReduction]: Checked pairs total: 91 [2021-03-11 16:14:29,240 INFO L133 LiptonReduction]: Total number of compositions: 9 [2021-03-11 16:14:29,247 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 15 transitions, 54 flow [2021-03-11 16:14:29,253 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 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) [2021-03-11 16:14:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 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) [2021-03-11 16:14:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 16:14:29,258 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:14:29,259 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:14:29,259 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:14:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:14:29,263 INFO L82 PathProgramCache]: Analyzing trace with hash -689228714, now seen corresponding path program 1 times [2021-03-11 16:14:29,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:14:29,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878067413] [2021-03-11 16:14:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:14:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:14:29,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:14:29,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 16:14:29,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 16:14:29,433 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 16:14:29,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:14:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:14:29,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878067413] [2021-03-11 16:14:29,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:14:29,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:14:29,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016432290] [2021-03-11 16:14:29,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 16:14:29,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:14:29,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 16:14:29,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 16:14:29,465 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 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, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-03-11 16:14:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:14:29,509 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-03-11 16:14:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 16:14:29,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-03-11 16:14:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:14:29,516 INFO L225 Difference]: With dead ends: 31 [2021-03-11 16:14:29,516 INFO L226 Difference]: Without dead ends: 23 [2021-03-11 16:14:29,517 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 16:14:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-03-11 16:14:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-03-11 16:14:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 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) [2021-03-11 16:14:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2021-03-11 16:14:29,541 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 11 [2021-03-11 16:14:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:14:29,542 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-03-11 16:14:29,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-03-11 16:14:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2021-03-11 16:14:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 16:14:29,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:14:29,543 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:14:29,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 16:14:29,543 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:14:29,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:14:29,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1029709638, now seen corresponding path program 2 times [2021-03-11 16:14:29,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:14:29,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94300447] [2021-03-11 16:14:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:14:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:14:29,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:14:29,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 16:14:29,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 16:14:29,595 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 16:14:29,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:14:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:14:29,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94300447] [2021-03-11 16:14:29,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:14:29,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:14:29,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633359796] [2021-03-11 16:14:29,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 16:14:29,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:14:29,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 16:14:29,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 16:14:29,602 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-03-11 16:14:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:14:29,627 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-03-11 16:14:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 16:14:29,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-03-11 16:14:29,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:14:29,628 INFO L225 Difference]: With dead ends: 27 [2021-03-11 16:14:29,628 INFO L226 Difference]: Without dead ends: 20 [2021-03-11 16:14:29,629 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 16:14:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-03-11 16:14:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-03-11 16:14:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 16:14:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-03-11 16:14:29,632 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11 [2021-03-11 16:14:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:14:29,633 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-03-11 16:14:29,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-03-11 16:14:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2021-03-11 16:14:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 16:14:29,633 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 16:14:29,634 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 16:14:29,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 16:14:29,634 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 16:14:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 16:14:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash 891181488, now seen corresponding path program 3 times [2021-03-11 16:14:29,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 16:14:29,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102351906] [2021-03-11 16:14:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 16:14:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 16:14:29,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 16:14:29,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 16:14:29,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 16:14:29,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 16:14:29,679 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 16:14:29,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 16:14:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 16:14:29,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102351906] [2021-03-11 16:14:29,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 16:14:29,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 16:14:29,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616017036] [2021-03-11 16:14:29,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 16:14:29,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 16:14:29,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 16:14:29,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 16:14:29,684 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-03-11 16:14:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 16:14:29,699 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2021-03-11 16:14:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 16:14:29,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-03-11 16:14:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 16:14:29,700 INFO L225 Difference]: With dead ends: 19 [2021-03-11 16:14:29,701 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 16:14:29,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 16:14:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 16:14:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 16:14:29,701 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) [2021-03-11 16:14:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 16:14:29,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-03-11 16:14:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 16:14:29,702 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 16:14:29,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-03-11 16:14:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 16:14:29,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 16:14:29,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 16:14:29,705 INFO L202 PluginConnector]: Adding new model simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 04:14:29 BasicIcfg [2021-03-11 16:14:29,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 16:14:29,706 INFO L168 Benchmark]: Toolchain (without parser) took 1122.90 ms. Allocated memory is still 385.9 MB. Free memory was 366.9 MB in the beginning and 308.7 MB in the end (delta: 58.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.0 GB. [2021-03-11 16:14:29,707 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 385.9 MB. Free memory was 368.0 MB in the beginning and 367.8 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 16:14:29,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.98 ms. Allocated memory is still 385.9 MB. Free memory was 366.4 MB in the beginning and 364.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 16:14:29,708 INFO L168 Benchmark]: Boogie Preprocessor took 13.63 ms. Allocated memory is still 385.9 MB. Free memory was 364.9 MB in the beginning and 364.0 MB in the end (delta: 844.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 16:14:29,708 INFO L168 Benchmark]: RCFGBuilder took 218.42 ms. Allocated memory is still 385.9 MB. Free memory was 364.0 MB in the beginning and 354.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 16:14:29,709 INFO L168 Benchmark]: TraceAbstraction took 857.67 ms. Allocated memory is still 385.9 MB. Free memory was 354.2 MB in the beginning and 308.7 MB in the end (delta: 45.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.0 GB. [2021-03-11 16:14:29,711 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 0.11 ms. Allocated memory is still 385.9 MB. Free memory was 368.0 MB in the beginning and 367.8 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.98 ms. Allocated memory is still 385.9 MB. Free memory was 366.4 MB in the beginning and 364.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.63 ms. Allocated memory is still 385.9 MB. Free memory was 364.9 MB in the beginning and 364.0 MB in the end (delta: 844.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 218.42 ms. Allocated memory is still 385.9 MB. Free memory was 364.0 MB in the beginning and 354.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 857.67 ms. Allocated memory is still 385.9 MB. Free memory was 354.2 MB in the beginning and 308.7 MB in the end (delta: 45.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 241.0ms, 33 PlacesBefore, 25 PlacesAfterwards, 23 TransitionsBefore, 15 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 91 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 91, positive: 91, positive conditional: 0, positive unconditional: 91, 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: 59, positive: 59, positive conditional: 0, positive unconditional: 59, 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: 59, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 91, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 59, unknown conditional: 0, unknown unconditional: 59] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 727.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 6.1ms, AutomataDifference: 115.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 274.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 11 SDslu, 72 SDs, 0 SdLazy, 75 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.0ms SsaConstructionTime, 26.3ms SatisfiabilityAnalysisTime, 188.6ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...