/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/chl/file-item-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 15:36:16,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 15:36:16,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 15:36:16,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 15:36:16,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 15:36:16,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 15:36:16,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 15:36:16,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 15:36:16,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 15:36:16,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 15:36:16,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 15:36:16,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 15:36:16,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 15:36:16,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 15:36:16,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 15:36:16,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 15:36:16,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 15:36:16,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 15:36:16,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 15:36:16,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 15:36:16,808 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 15:36:16,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 15:36:16,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 15:36:16,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 15:36:16,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 15:36:16,846 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 15:36:16,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 15:36:16,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 15:36:16,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 15:36:16,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 15:36:16,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 15:36:16,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 15:36:16,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 15:36:16,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 15:36:16,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 15:36:16,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 15:36:16,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 15:36:16,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 15:36:16,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 15:36:16,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 15:36:16,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 15:36:16,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 15:36:16,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:36:16,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 15:36:16,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 15:36:16,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 15:36:16,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 15:36:16,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 15:36:16,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 15:36:16,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 15:36:17,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 15:36:17,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 15:36:17,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 15:36:17,187 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 15:36:17,188 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 15:36:17,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-trans.wvr.bpl [2021-03-11 15:36:17,189 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-trans.wvr.bpl' [2021-03-11 15:36:17,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 15:36:17,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 15:36:17,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 15:36:17,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 15:36:17,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 15:36:17,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 15:36:17,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 15:36:17,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 15:36:17,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 15:36:17,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/1) ... [2021-03-11 15:36:17,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 15:36:17,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 15:36:17,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 15:36:17,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 15:36:17,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (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 15:36:17,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 15:36:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 15:36:17,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 15:36:17,335 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 15:36:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 15:36:17,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 15:36:17,335 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 15:36:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 15:36:17,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 15:36:17,336 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 15:36:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 15:36:17,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 15:36:17,336 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 15:36:17,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 15:36:17,469 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 15:36:17,470 INFO L202 PluginConnector]: Adding new model file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:36:17 BoogieIcfgContainer [2021-03-11 15:36:17,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 15:36:17,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 15:36:17,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 15:36:17,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 15:36:17,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:36:17" (1/2) ... [2021-03-11 15:36:17,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c86e20 and model type file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 03:36:17, skipping insertion in model container [2021-03-11 15:36:17,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:36:17" (2/2) ... [2021-03-11 15:36:17,476 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-trans.wvr.bpl [2021-03-11 15:36:17,480 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 15:36:17,480 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 15:36:17,493 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 15:36:17,494 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 15:36:17,521 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 15:36:17,532 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 15:36:17,546 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 15:36:17,546 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 15:36:17,546 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 15:36:17,546 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 15:36:17,546 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 15:36:17,546 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 15:36:17,546 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 15:36:17,546 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 15:36:17,555 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 15:36:17,564 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:36:17,566 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:36:17,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-11 15:36:17,582 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 15:36:17,583 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 15:36:17,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 15:36:17,585 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-11 15:36:17,665 INFO L131 LiptonReduction]: Checked pairs total: 48 [2021-03-11 15:36:17,665 INFO L133 LiptonReduction]: Total number of compositions: 6 [2021-03-11 15:36:17,671 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 14 transitions, 52 flow [2021-03-11 15:36:17,677 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 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 15:36:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 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 15:36:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:17,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:17,681 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:17,682 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:17,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:17,685 INFO L82 PathProgramCache]: Analyzing trace with hash 807927935, now seen corresponding path program 1 times [2021-03-11 15:36:17,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:17,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477807297] [2021-03-11 15:36:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:17,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:17,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:17,883 INFO L142 QuantifierPusher]: treesize reduction 43, result has 38.6 percent of original size [2021-03-11 15:36:17,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 15:36:17,924 INFO L142 QuantifierPusher]: treesize reduction 22, result has 63.9 percent of original size [2021-03-11 15:36:17,926 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-03-11 15:36:17,971 INFO L142 QuantifierPusher]: treesize reduction 24, result has 56.4 percent of original size [2021-03-11 15:36:17,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 15:36:18,032 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 15:36:18,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477807297] [2021-03-11 15:36:18,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:18,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:18,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346271399] [2021-03-11 15:36:18,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:18,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:18,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:18,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:18,048 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 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 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:18,175 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-03-11 15:36:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:18,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2021-03-11 15:36:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:18,185 INFO L225 Difference]: With dead ends: 36 [2021-03-11 15:36:18,185 INFO L226 Difference]: Without dead ends: 28 [2021-03-11 15:36:18,187 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 218.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-03-11 15:36:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-03-11 15:36:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 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 15:36:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-03-11 15:36:18,233 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 10 [2021-03-11 15:36:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:18,234 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-03-11 15:36:18,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2021-03-11 15:36:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:18,235 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:18,235 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:18,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 15:36:18,235 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:18,237 INFO L82 PathProgramCache]: Analyzing trace with hash 863933841, now seen corresponding path program 2 times [2021-03-11 15:36:18,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:18,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581218338] [2021-03-11 15:36:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:18,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:18,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:18,318 INFO L142 QuantifierPusher]: treesize reduction 19, result has 51.3 percent of original size [2021-03-11 15:36:18,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 15:36:18,335 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 15:36:18,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 15:36:18,390 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-03-11 15:36:18,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 15:36:18,405 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 15:36:18,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581218338] [2021-03-11 15:36:18,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:18,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:18,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463400054] [2021-03-11 15:36:18,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:18,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:18,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:18,410 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:18,513 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2021-03-11 15:36:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:18,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2021-03-11 15:36:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:18,514 INFO L225 Difference]: With dead ends: 34 [2021-03-11 15:36:18,514 INFO L226 Difference]: Without dead ends: 24 [2021-03-11 15:36:18,515 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-03-11 15:36:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-03-11 15:36:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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 15:36:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-03-11 15:36:18,517 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 10 [2021-03-11 15:36:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:18,518 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-03-11 15:36:18,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2021-03-11 15:36:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:18,518 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:18,518 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:18,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 15:36:18,519 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash -615082415, now seen corresponding path program 3 times [2021-03-11 15:36:18,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:18,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696302326] [2021-03-11 15:36:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:18,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:18,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:18,549 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-03-11 15:36:18,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 15:36:18,563 INFO L142 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-03-11 15:36:18,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 15:36:18,584 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-03-11 15:36:18,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 15:36:18,595 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 15:36:18,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696302326] [2021-03-11 15:36:18,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:18,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:18,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893865758] [2021-03-11 15:36:18,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:18,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:18,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:18,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:18,598 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:18,687 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-03-11 15:36:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:18,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2021-03-11 15:36:18,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:18,688 INFO L225 Difference]: With dead ends: 28 [2021-03-11 15:36:18,688 INFO L226 Difference]: Without dead ends: 20 [2021-03-11 15:36:18,689 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:18,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-03-11 15:36:18,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2021-03-11 15:36:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2021-03-11 15:36:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-03-11 15:36:18,691 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-03-11 15:36:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:18,691 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-03-11 15:36:18,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:18,691 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-03-11 15:36:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:18,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:18,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:18,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 15:36:18,692 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:18,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1076150307, now seen corresponding path program 4 times [2021-03-11 15:36:18,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:18,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006489516] [2021-03-11 15:36:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:18,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:18,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:18,726 INFO L142 QuantifierPusher]: treesize reduction 58, result has 44.2 percent of original size [2021-03-11 15:36:18,728 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size 37 [2021-03-11 15:36:18,783 INFO L142 QuantifierPusher]: treesize reduction 67, result has 45.1 percent of original size [2021-03-11 15:36:18,784 INFO L147 QuantifierPusher]: treesize reduction 13, result has 76.4 percent of original size 42 [2021-03-11 15:36:18,829 INFO L142 QuantifierPusher]: treesize reduction 95, result has 30.7 percent of original size [2021-03-11 15:36:18,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 15:36:18,850 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 15:36:18,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006489516] [2021-03-11 15:36:18,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:18,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:18,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754486331] [2021-03-11 15:36:18,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:18,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:18,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:18,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:18,854 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:18,955 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-03-11 15:36:18,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:18,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2021-03-11 15:36:18,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:18,957 INFO L225 Difference]: With dead ends: 20 [2021-03-11 15:36:18,957 INFO L226 Difference]: Without dead ends: 13 [2021-03-11 15:36:18,958 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 185.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-03-11 15:36:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-03-11 15:36:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-03-11 15:36:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-03-11 15:36:18,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2021-03-11 15:36:18,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:18,962 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-03-11 15:36:18,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:18,963 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-03-11 15:36:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:18,963 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:18,963 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:18,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 15:36:18,963 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:18,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:18,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1482633903, now seen corresponding path program 5 times [2021-03-11 15:36:18,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:18,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770512666] [2021-03-11 15:36:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:19,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:19,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:19,019 INFO L142 QuantifierPusher]: treesize reduction 47, result has 57.3 percent of original size [2021-03-11 15:36:19,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 15:36:19,108 INFO L142 QuantifierPusher]: treesize reduction 53, result has 50.5 percent of original size [2021-03-11 15:36:19,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 15:36:19,167 INFO L142 QuantifierPusher]: treesize reduction 59, result has 34.4 percent of original size [2021-03-11 15:36:19,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 15:36:19,189 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 15:36:19,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770512666] [2021-03-11 15:36:19,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:19,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:19,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446653437] [2021-03-11 15:36:19,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:19,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:19,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:19,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:19,191 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:19,341 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-03-11 15:36:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:19,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2021-03-11 15:36:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:19,342 INFO L225 Difference]: With dead ends: 17 [2021-03-11 15:36:19,342 INFO L226 Difference]: Without dead ends: 12 [2021-03-11 15:36:19,342 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 271.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-03-11 15:36:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-03-11 15:36:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 15:36:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-03-11 15:36:19,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-03-11 15:36:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:19,344 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-03-11 15:36:19,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-03-11 15:36:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:36:19,344 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:36:19,345 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:36:19,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 15:36:19,345 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:36:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:36:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1399517013, now seen corresponding path program 6 times [2021-03-11 15:36:19,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:36:19,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369630848] [2021-03-11 15:36:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:36:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:36:19,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:36:19,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:36:19,364 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-03-11 15:36:19,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 15:36:19,374 INFO L142 QuantifierPusher]: treesize reduction 12, result has 67.6 percent of original size [2021-03-11 15:36:19,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 15:36:19,388 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-03-11 15:36:19,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 15:36:19,398 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 15:36:19,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369630848] [2021-03-11 15:36:19,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:36:19,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:36:19,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673348738] [2021-03-11 15:36:19,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:36:19,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:36:19,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:36:19,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:36:19,400 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:36:19,472 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-03-11 15:36:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:36:19,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2021-03-11 15:36:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:36:19,473 INFO L225 Difference]: With dead ends: 11 [2021-03-11 15:36:19,473 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 15:36:19,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:36:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 15:36:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 15:36:19,473 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 15:36:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 15:36:19,474 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-03-11 15:36:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:36:19,474 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 15:36:19,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-03-11 15:36:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 15:36:19,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 15:36:19,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 15:36:19,477 INFO L202 PluginConnector]: Adding new model file-item-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 03:36:19 BasicIcfg [2021-03-11 15:36:19,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 15:36:19,477 INFO L168 Benchmark]: Toolchain (without parser) took 2257.55 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 236.5 MB in the beginning and 293.7 MB in the end (delta: -57.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:19,478 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:36:19,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.82 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:19,478 INFO L168 Benchmark]: Boogie Preprocessor took 20.33 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 975.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:19,479 INFO L168 Benchmark]: RCFGBuilder took 199.59 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 239.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:19,480 INFO L168 Benchmark]: TraceAbstraction took 2005.47 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 239.1 MB in the beginning and 293.7 MB in the end (delta: -54.7 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.0 GB. [2021-03-11 15:36:19,486 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 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.82 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.33 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 975.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 199.59 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 239.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2005.47 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 239.1 MB in the beginning and 293.7 MB in the end (delta: -54.7 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 99.0ms, 29 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 48 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48, positive: 48, positive conditional: 0, positive unconditional: 48, 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: 32, positive: 32, positive conditional: 0, positive unconditional: 32, 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: 32, positive: 32, positive conditional: 0, positive unconditional: 32, 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: 48, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 32, unknown conditional: 0, unknown unconditional: 32] , 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: 50]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1930.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 5.9ms, AutomataDifference: 680.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 130.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 91 SDslu, 106 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1023.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.1ms SsaConstructionTime, 86.5ms SatisfiabilityAnalysisTime, 867.7ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...