/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 21:57:24,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 21:57:24,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 21:57:24,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 21:57:24,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 21:57:24,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 21:57:24,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 21:57:24,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 21:57:24,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 21:57:24,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 21:57:24,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 21:57:24,618 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 21:57:24,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 21:57:24,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 21:57:24,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 21:57:24,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 21:57:24,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 21:57:24,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 21:57:24,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 21:57:24,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 21:57:24,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 21:57:24,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 21:57:24,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 21:57:24,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 21:57:24,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 21:57:24,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 21:57:24,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 21:57:24,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 21:57:24,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 21:57:24,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 21:57:24,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 21:57:24,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 21:57:24,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 21:57:24,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 21:57:24,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 21:57:24,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 21:57:24,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 21:57:24,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 21:57:24,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 21:57:24,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 21:57:24,981 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 21:57:24,982 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 21:57:24,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-trans.wvr.bpl [2021-06-05 21:57:24,982 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-trans.wvr.bpl' [2021-06-05 21:57:25,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 21:57:25,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 21:57:25,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 21:57:25,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 21:57:25,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 21:57:25,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 21:57:25,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 21:57:25,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 21:57:25,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 21:57:25,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... [2021-06-05 21:57:25,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 21:57:25,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 21:57:25,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 21:57:25,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 21:57:25,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 21:57:25,114 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 21:57:25,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 21:57:25,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 21:57:25,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 21:57:25,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 21:57:25,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 21:57:25,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 21:57:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 21:57:25,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 21:57:25,116 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 21:57:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 21:57:25,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 21:57:25,118 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 21:57:25,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 21:57:25,286 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 21:57:25,287 INFO L202 PluginConnector]: Adding new model match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 09:57:25 BoogieIcfgContainer [2021-06-05 21:57:25,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 21:57:25,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 21:57:25,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 21:57:25,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 21:57:25,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 09:57:25" (1/2) ... [2021-06-05 21:57:25,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26af703a and model type match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 09:57:25, skipping insertion in model container [2021-06-05 21:57:25,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 09:57:25" (2/2) ... [2021-06-05 21:57:25,293 INFO L111 eAbstractionObserver]: Analyzing ICFG match-trans.wvr.bpl [2021-06-05 21:57:25,298 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 21:57:25,298 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 21:57:25,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 21:57:25,299 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 21:57:25,328 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 21:57:25,346 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 21:57:25,362 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 21:57:25,363 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 21:57:25,363 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 21:57:25,363 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 21:57:25,363 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 21:57:25,363 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 21:57:25,363 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 21:57:25,363 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 21:57:25,371 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2021-06-05 21:57:25,400 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 21:57:25,408 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:57:25,409 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:57:25,409 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 21:57:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:57:25,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1166045766, now seen corresponding path program 1 times [2021-06-05 21:57:25,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:57:25,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986179096] [2021-06-05 21:57:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:57:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:57:25,790 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 54 [2021-06-05 21:57:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:57:25,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:57:25,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986179096] [2021-06-05 21:57:25,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986179096] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:57:25,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:57:25,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 21:57:25,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674731340] [2021-06-05 21:57:25,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 21:57:25,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:57:25,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 21:57:25,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 21:57:25,962 INFO L87 Difference]: Start difference. First operand has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:57:26,059 INFO L93 Difference]: Finished difference Result 98 states and 183 transitions. [2021-06-05 21:57:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 21:57:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 21:57:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:57:26,067 INFO L225 Difference]: With dead ends: 98 [2021-06-05 21:57:26,067 INFO L226 Difference]: Without dead ends: 72 [2021-06-05 21:57:26,068 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 199.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 21:57:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-06-05 21:57:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-06-05 21:57:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 54 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 105 transitions. [2021-06-05 21:57:26,098 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 105 transitions. Word has length 14 [2021-06-05 21:57:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:57:26,099 INFO L482 AbstractCegarLoop]: Abstraction has 55 states and 105 transitions. [2021-06-05 21:57:26,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 105 transitions. [2021-06-05 21:57:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 21:57:26,100 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:57:26,100 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:57:26,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 21:57:26,100 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 21:57:26,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:57:26,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1802957754, now seen corresponding path program 2 times [2021-06-05 21:57:26,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:57:26,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606654235] [2021-06-05 21:57:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:57:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:57:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:57:26,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:57:26,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606654235] [2021-06-05 21:57:26,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606654235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:57:26,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:57:26,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 21:57:26,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536910727] [2021-06-05 21:57:26,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 21:57:26,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:57:26,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 21:57:26,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 21:57:26,350 INFO L87 Difference]: Start difference. First operand 55 states and 105 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:57:26,438 INFO L93 Difference]: Finished difference Result 93 states and 168 transitions. [2021-06-05 21:57:26,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 21:57:26,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 21:57:26,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:57:26,440 INFO L225 Difference]: With dead ends: 93 [2021-06-05 21:57:26,440 INFO L226 Difference]: Without dead ends: 65 [2021-06-05 21:57:26,441 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 21:57:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-06-05 21:57:26,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2021-06-05 21:57:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 91 transitions. [2021-06-05 21:57:26,458 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 91 transitions. Word has length 14 [2021-06-05 21:57:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:57:26,458 INFO L482 AbstractCegarLoop]: Abstraction has 48 states and 91 transitions. [2021-06-05 21:57:26,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 91 transitions. [2021-06-05 21:57:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 21:57:26,461 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:57:26,461 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:57:26,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 21:57:26,462 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 21:57:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:57:26,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2138675270, now seen corresponding path program 3 times [2021-06-05 21:57:26,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:57:26,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560653732] [2021-06-05 21:57:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:57:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:57:26,735 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-06-05 21:57:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:57:26,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:57:26,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560653732] [2021-06-05 21:57:26,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560653732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:57:26,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:57:26,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 21:57:26,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145063932] [2021-06-05 21:57:26,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 21:57:26,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:57:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 21:57:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 21:57:26,775 INFO L87 Difference]: Start difference. First operand 48 states and 91 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:57:26,951 INFO L93 Difference]: Finished difference Result 80 states and 141 transitions. [2021-06-05 21:57:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 21:57:26,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 21:57:26,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:57:26,957 INFO L225 Difference]: With dead ends: 80 [2021-06-05 21:57:26,957 INFO L226 Difference]: Without dead ends: 54 [2021-06-05 21:57:26,957 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 331.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 21:57:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-06-05 21:57:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-06-05 21:57:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 64 transitions. [2021-06-05 21:57:26,963 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 64 transitions. Word has length 14 [2021-06-05 21:57:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:57:26,963 INFO L482 AbstractCegarLoop]: Abstraction has 37 states and 64 transitions. [2021-06-05 21:57:26,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 64 transitions. [2021-06-05 21:57:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 21:57:26,964 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:57:26,964 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:57:26,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 21:57:26,964 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 21:57:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:57:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1206578024, now seen corresponding path program 4 times [2021-06-05 21:57:26,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:57:26,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626762128] [2021-06-05 21:57:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:57:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:57:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:57:27,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:57:27,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626762128] [2021-06-05 21:57:27,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626762128] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:57:27,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:57:27,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 21:57:27,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569089300] [2021-06-05 21:57:27,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 21:57:27,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:57:27,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 21:57:27,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 21:57:27,093 INFO L87 Difference]: Start difference. First operand 37 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:57:27,154 INFO L93 Difference]: Finished difference Result 56 states and 96 transitions. [2021-06-05 21:57:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 21:57:27,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 21:57:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:57:27,155 INFO L225 Difference]: With dead ends: 56 [2021-06-05 21:57:27,155 INFO L226 Difference]: Without dead ends: 33 [2021-06-05 21:57:27,156 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 21:57:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-06-05 21:57:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-06-05 21:57:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2021-06-05 21:57:27,158 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 14 [2021-06-05 21:57:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:57:27,159 INFO L482 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2021-06-05 21:57:27,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2021-06-05 21:57:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 21:57:27,159 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:57:27,159 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:57:27,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 21:57:27,160 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 21:57:27,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:57:27,160 INFO L82 PathProgramCache]: Analyzing trace with hash 531109224, now seen corresponding path program 5 times [2021-06-05 21:57:27,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:57:27,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321033642] [2021-06-05 21:57:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:57:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:57:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:57:27,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:57:27,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321033642] [2021-06-05 21:57:27,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321033642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:57:27,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:57:27,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 21:57:27,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505135536] [2021-06-05 21:57:27,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 21:57:27,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:57:27,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 21:57:27,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 21:57:27,270 INFO L87 Difference]: Start difference. First operand 33 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:57:27,333 INFO L93 Difference]: Finished difference Result 48 states and 80 transitions. [2021-06-05 21:57:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 21:57:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 21:57:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:57:27,334 INFO L225 Difference]: With dead ends: 48 [2021-06-05 21:57:27,335 INFO L226 Difference]: Without dead ends: 27 [2021-06-05 21:57:27,335 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 21:57:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-06-05 21:57:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-06-05 21:57:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2021-06-05 21:57:27,340 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 14 [2021-06-05 21:57:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:57:27,340 INFO L482 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-06-05 21:57:27,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2021-06-05 21:57:27,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 21:57:27,341 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 21:57:27,341 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 21:57:27,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 21:57:27,341 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 21:57:27,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 21:57:27,342 INFO L82 PathProgramCache]: Analyzing trace with hash 202726342, now seen corresponding path program 6 times [2021-06-05 21:57:27,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 21:57:27,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368873781] [2021-06-05 21:57:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 21:57:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 21:57:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 21:57:27,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 21:57:27,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368873781] [2021-06-05 21:57:27,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368873781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 21:57:27,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 21:57:27,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 21:57:27,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792324497] [2021-06-05 21:57:27,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 21:57:27,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 21:57:27,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 21:57:27,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 21:57:27,494 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 21:57:27,553 INFO L93 Difference]: Finished difference Result 25 states and 39 transitions. [2021-06-05 21:57:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 21:57:27,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 21:57:27,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 21:57:27,554 INFO L225 Difference]: With dead ends: 25 [2021-06-05 21:57:27,554 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 21:57:27,554 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 21:57:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 21:57:27,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 21:57:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 21:57:27,558 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-06-05 21:57:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 21:57:27,559 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 21:57:27,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 21:57:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 21:57:27,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 21:57:27,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 21:57:27,563 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 21:57:27,565 INFO L202 PluginConnector]: Adding new model match-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 09:57:27 BasicIcfg [2021-06-05 21:57:27,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 21:57:27,566 INFO L168 Benchmark]: Toolchain (without parser) took 2552.04 ms. Allocated memory is still 362.8 MB. Free memory was 341.7 MB in the beginning and 196.6 MB in the end (delta: 145.2 MB). Peak memory consumption was 143.5 MB. Max. memory is 16.0 GB. [2021-06-05 21:57:27,568 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory was 342.9 MB in the beginning and 342.8 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 21:57:27,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.65 ms. Allocated memory is still 362.8 MB. Free memory was 341.6 MB in the beginning and 340.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 21:57:27,569 INFO L168 Benchmark]: Boogie Preprocessor took 14.15 ms. Allocated memory is still 362.8 MB. Free memory was 340.1 MB in the beginning and 339.3 MB in the end (delta: 876.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 21:57:27,571 INFO L168 Benchmark]: RCFGBuilder took 233.57 ms. Allocated memory is still 362.8 MB. Free memory was 339.2 MB in the beginning and 328.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 21:57:27,571 INFO L168 Benchmark]: TraceAbstraction took 2276.50 ms. Allocated memory is still 362.8 MB. Free memory was 328.3 MB in the beginning and 196.6 MB in the end (delta: 131.7 MB). Peak memory consumption was 130.9 MB. Max. memory is 16.0 GB. [2021-06-05 21:57:27,574 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 0.12 ms. Allocated memory is still 362.8 MB. Free memory was 342.9 MB in the beginning and 342.8 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.65 ms. Allocated memory is still 362.8 MB. Free memory was 341.6 MB in the beginning and 340.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.15 ms. Allocated memory is still 362.8 MB. Free memory was 340.1 MB in the beginning and 339.3 MB in the end (delta: 876.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 233.57 ms. Allocated memory is still 362.8 MB. Free memory was 339.2 MB in the beginning and 328.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2276.50 ms. Allocated memory is still 362.8 MB. Free memory was 328.3 MB in the beginning and 196.6 MB in the end (delta: 131.7 MB). Peak memory consumption was 130.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2201.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.5ms, AutomataDifference: 589.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 36.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 119 SDtfs, 147 SDslu, 177 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 996.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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: 49.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.2ms SsaConstructionTime, 100.5ms SatisfiabilityAnalysisTime, 1278.1ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 1143 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...