/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 02:10:11,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 02:10:11,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 02:10:11,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 02:10:11,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-14 02:10:11,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 02:10:11,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 02:10:11,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 02:10:11,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 02:10:11,361 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 02:10:11,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 02:10:11,361 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 02:10:11,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 02:10:11,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 02:10:11,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 02:10:11,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 02:10:11,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 02:10:11,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 02:10:11,362 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 02:10:11,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 02:10:11,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 02:10:11,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 02:10:11,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 02:10:11,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 02:10:11,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 02:10:11,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 02:10:11,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 02:10:11,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 02:10:11,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 02:10:11,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 02:10:11,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 02:10:11,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 02:10:11,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 02:10:11,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 02:10:11,364 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 02:10:11,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 02:10:11,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 02:10:11,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 02:10:11,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 02:10:11,622 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 02:10:11,622 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 02:10:11,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl [2021-07-14 02:10:11,623 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl' [2021-07-14 02:10:11,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 02:10:11,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 02:10:11,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 02:10:11,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 02:10:11,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 02:10:11,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 02:10:11,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 02:10:11,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 02:10:11,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 02:10:11,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... [2021-07-14 02:10:11,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 02:10:11,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 02:10:11,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 02:10:11,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 02:10:11,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 02:10:11,715 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 02:10:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 02:10:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 02:10:11,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 02:10:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 02:10:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 02:10:11,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 02:10:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 02:10:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 02:10:11,717 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 02:10:11,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 02:10:11,913 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 02:10:11,914 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:10:11 BoogieIcfgContainer [2021-07-14 02:10:11,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 02:10:11,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 02:10:11,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 02:10:11,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 02:10:11,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:11" (1/2) ... [2021-07-14 02:10:11,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52130b02 and model type easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:10:11, skipping insertion in model container [2021-07-14 02:10:11,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:10:11" (2/2) ... [2021-07-14 02:10:11,920 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.bpl [2021-07-14 02:10:11,923 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 02:10:11,923 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 02:10:11,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 02:10:11,924 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 02:10:11,966 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-14 02:10:11,981 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-14 02:10:11,993 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 02:10:11,994 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 02:10:11,994 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 02:10:11,994 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 02:10:11,994 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 02:10:11,994 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 02:10:11,994 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 02:10:11,994 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 02:10:12,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 130 states have (on average 1.6) internal successors, (208), 151 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:12,204 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:12,205 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:12,205 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:12,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1704869927, now seen corresponding path program 1 times [2021-07-14 02:10:12,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:12,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538387569] [2021-07-14 02:10:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:12,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,393 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-14 02:10:12,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:12,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:12,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538387569] [2021-07-14 02:10:12,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538387569] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:12,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:12,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 02:10:12,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603005022] [2021-07-14 02:10:12,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 02:10:12,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:12,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 02:10:12,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 02:10:12,428 INFO L87 Difference]: Start difference. First operand has 152 states, 130 states have (on average 1.6) internal successors, (208), 151 states have internal predecessors, (208), 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 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:12,547 INFO L93 Difference]: Finished difference Result 202 states and 264 transitions. [2021-07-14 02:10:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 02:10:12,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:12,560 INFO L225 Difference]: With dead ends: 202 [2021-07-14 02:10:12,560 INFO L226 Difference]: Without dead ends: 121 [2021-07-14 02:10:12,561 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 91.1ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-14 02:10:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-07-14 02:10:12,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2021-07-14 02:10:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.40625) internal successors, (135), 96 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2021-07-14 02:10:12,596 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 31 [2021-07-14 02:10:12,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:12,599 INFO L482 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2021-07-14 02:10:12,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2021-07-14 02:10:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:12,600 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:12,600 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:12,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 02:10:12,601 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:12,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:12,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1477739763, now seen corresponding path program 2 times [2021-07-14 02:10:12,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:12,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204504514] [2021-07-14 02:10:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:12,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:12,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:12,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:12,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:12,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 02:10:12,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:12,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:12,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204504514] [2021-07-14 02:10:12,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204504514] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:12,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:12,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 02:10:12,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019819018] [2021-07-14 02:10:12,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 02:10:12,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:12,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 02:10:12,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-14 02:10:12,683 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:12,791 INFO L93 Difference]: Finished difference Result 191 states and 274 transitions. [2021-07-14 02:10:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 02:10:12,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:12,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:12,798 INFO L225 Difference]: With dead ends: 191 [2021-07-14 02:10:12,798 INFO L226 Difference]: Without dead ends: 161 [2021-07-14 02:10:12,799 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-07-14 02:10:12,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-07-14 02:10:12,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 87. [2021-07-14 02:10:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 86 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2021-07-14 02:10:12,804 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 31 [2021-07-14 02:10:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:12,804 INFO L482 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2021-07-14 02:10:12,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2021-07-14 02:10:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:12,805 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:12,805 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:12,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 02:10:12,805 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:12,806 INFO L82 PathProgramCache]: Analyzing trace with hash 35857941, now seen corresponding path program 3 times [2021-07-14 02:10:12,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:12,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633917601] [2021-07-14 02:10:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:12,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:12,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:12,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:12,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:12,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633917601] [2021-07-14 02:10:12,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633917601] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:12,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:12,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 02:10:12,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601977719] [2021-07-14 02:10:12,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 02:10:12,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:12,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 02:10:12,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 02:10:12,842 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:12,850 INFO L93 Difference]: Finished difference Result 81 states and 108 transitions. [2021-07-14 02:10:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 02:10:12,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:12,854 INFO L225 Difference]: With dead ends: 81 [2021-07-14 02:10:12,855 INFO L226 Difference]: Without dead ends: 81 [2021-07-14 02:10:12,855 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 02:10:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-07-14 02:10:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-07-14 02:10:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.35) internal successors, (108), 80 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 108 transitions. [2021-07-14 02:10:12,858 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 108 transitions. Word has length 31 [2021-07-14 02:10:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:12,859 INFO L482 AbstractCegarLoop]: Abstraction has 81 states and 108 transitions. [2021-07-14 02:10:12,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 108 transitions. [2021-07-14 02:10:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:12,860 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:12,860 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:12,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 02:10:12,860 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:12,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:12,860 INFO L82 PathProgramCache]: Analyzing trace with hash -319106367, now seen corresponding path program 4 times [2021-07-14 02:10:12,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:12,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064655066] [2021-07-14 02:10:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:12,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,957 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-14 02:10:12,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:12,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:12,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:12,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:12,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064655066] [2021-07-14 02:10:12,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064655066] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:12,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:12,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 02:10:12,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304041618] [2021-07-14 02:10:12,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 02:10:12,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:12,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 02:10:12,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 02:10:12,973 INFO L87 Difference]: Start difference. First operand 81 states and 108 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:13,053 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2021-07-14 02:10:13,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 02:10:13,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:13,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:13,056 INFO L225 Difference]: With dead ends: 103 [2021-07-14 02:10:13,057 INFO L226 Difference]: Without dead ends: 73 [2021-07-14 02:10:13,057 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 75.0ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-14 02:10:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-07-14 02:10:13,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2021-07-14 02:10:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2021-07-14 02:10:13,068 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 31 [2021-07-14 02:10:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:13,069 INFO L482 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2021-07-14 02:10:13,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2021-07-14 02:10:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:13,071 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:13,072 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:13,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 02:10:13,072 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash 763114329, now seen corresponding path program 5 times [2021-07-14 02:10:13,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:13,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518844038] [2021-07-14 02:10:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:13,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:13,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,167 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-07-14 02:10:13,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:13,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:13,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518844038] [2021-07-14 02:10:13,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518844038] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:13,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:13,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 02:10:13,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076135244] [2021-07-14 02:10:13,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 02:10:13,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:13,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 02:10:13,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-14 02:10:13,187 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:13,303 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2021-07-14 02:10:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 02:10:13,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:13,310 INFO L225 Difference]: With dead ends: 128 [2021-07-14 02:10:13,310 INFO L226 Difference]: Without dead ends: 125 [2021-07-14 02:10:13,310 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-14 02:10:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-07-14 02:10:13,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 70. [2021-07-14 02:10:13,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2021-07-14 02:10:13,320 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 31 [2021-07-14 02:10:13,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:13,320 INFO L482 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2021-07-14 02:10:13,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,320 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2021-07-14 02:10:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:13,321 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:13,321 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:13,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 02:10:13,321 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:13,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:13,322 INFO L82 PathProgramCache]: Analyzing trace with hash -2079675081, now seen corresponding path program 6 times [2021-07-14 02:10:13,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:13,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621790884] [2021-07-14 02:10:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:13,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:13,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:13,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:13,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621790884] [2021-07-14 02:10:13,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621790884] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:13,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:13,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 02:10:13,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762337171] [2021-07-14 02:10:13,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 02:10:13,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:13,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 02:10:13,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-14 02:10:13,442 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:13,550 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2021-07-14 02:10:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 02:10:13,550 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:13,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:13,551 INFO L225 Difference]: With dead ends: 119 [2021-07-14 02:10:13,551 INFO L226 Difference]: Without dead ends: 105 [2021-07-14 02:10:13,551 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-14 02:10:13,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-07-14 02:10:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 60. [2021-07-14 02:10:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 59 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2021-07-14 02:10:13,553 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 31 [2021-07-14 02:10:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:13,553 INFO L482 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-07-14 02:10:13,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2021-07-14 02:10:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:13,554 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:13,554 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:13,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 02:10:13,554 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:13,555 INFO L82 PathProgramCache]: Analyzing trace with hash -2096939465, now seen corresponding path program 7 times [2021-07-14 02:10:13,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:13,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152466331] [2021-07-14 02:10:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:13,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:13,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 02:10:13,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:13,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:13,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152466331] [2021-07-14 02:10:13,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152466331] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:13,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:13,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 02:10:13,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230925514] [2021-07-14 02:10:13,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 02:10:13,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:13,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 02:10:13,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-14 02:10:13,664 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:13,763 INFO L93 Difference]: Finished difference Result 114 states and 149 transitions. [2021-07-14 02:10:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 02:10:13,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:13,764 INFO L225 Difference]: With dead ends: 114 [2021-07-14 02:10:13,764 INFO L226 Difference]: Without dead ends: 111 [2021-07-14 02:10:13,765 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-14 02:10:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-07-14 02:10:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2021-07-14 02:10:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 70 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2021-07-14 02:10:13,779 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 31 [2021-07-14 02:10:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:13,780 INFO L482 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2021-07-14 02:10:13,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2021-07-14 02:10:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:13,781 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:13,781 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:13,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 02:10:13,781 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash -644761579, now seen corresponding path program 8 times [2021-07-14 02:10:13,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:13,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559012178] [2021-07-14 02:10:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:13,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:13,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:13,840 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-14 02:10:13,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 02:10:13,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:13,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:13,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559012178] [2021-07-14 02:10:13,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559012178] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:13,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:13,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 02:10:13,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038745878] [2021-07-14 02:10:13,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 02:10:13,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:13,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 02:10:13,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-14 02:10:13,850 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:13,940 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2021-07-14 02:10:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 02:10:13,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:13,941 INFO L225 Difference]: With dead ends: 105 [2021-07-14 02:10:13,941 INFO L226 Difference]: Without dead ends: 93 [2021-07-14 02:10:13,942 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-14 02:10:13,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-07-14 02:10:13,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-07-14 02:10:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 62 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2021-07-14 02:10:13,943 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 31 [2021-07-14 02:10:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:13,943 INFO L482 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2021-07-14 02:10:13,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2021-07-14 02:10:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:13,944 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:13,944 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:13,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 02:10:13,944 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:13,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1546747047, now seen corresponding path program 9 times [2021-07-14 02:10:13,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:13,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996585890] [2021-07-14 02:10:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:13,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:13,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:13,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996585890] [2021-07-14 02:10:13,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996585890] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:13,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:13,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 02:10:13,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726066451] [2021-07-14 02:10:13,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 02:10:13,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 02:10:13,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 02:10:13,955 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:13,957 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2021-07-14 02:10:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 02:10:13,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:13,958 INFO L225 Difference]: With dead ends: 62 [2021-07-14 02:10:13,958 INFO L226 Difference]: Without dead ends: 54 [2021-07-14 02:10:13,958 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 02:10:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-07-14 02:10:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-07-14 02:10:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 53 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2021-07-14 02:10:13,959 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 31 [2021-07-14 02:10:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:13,959 INFO L482 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2021-07-14 02:10:13,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2021-07-14 02:10:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-14 02:10:13,960 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:10:13,960 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:10:13,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-14 02:10:13,960 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:10:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:10:13,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1108599925, now seen corresponding path program 10 times [2021-07-14 02:10:13,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:10:13,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937553110] [2021-07-14 02:10:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:10:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:10:13,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:13,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:13,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:13,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:10:13,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:13,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 02:10:14,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:14,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 02:10:14,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:10:14,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:10:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:10:14,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:10:14,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937553110] [2021-07-14 02:10:14,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937553110] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:10:14,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:10:14,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 02:10:14,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435814850] [2021-07-14 02:10:14,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 02:10:14,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:10:14,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 02:10:14,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-14 02:10:14,015 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:10:14,044 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-07-14 02:10:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 02:10:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 31 [2021-07-14 02:10:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:10:14,044 INFO L225 Difference]: With dead ends: 31 [2021-07-14 02:10:14,044 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 02:10:14,045 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-14 02:10:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 02:10:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 02:10:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 02:10:14,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-07-14 02:10:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:10:14,046 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 02:10:14,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 02:10:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 02:10:14,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 02:10:14,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-14 02:10:14,048 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 02:10:14,050 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 02:10:14 BasicIcfg [2021-07-14 02:10:14,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 02:10:14,052 INFO L168 Benchmark]: Toolchain (without parser) took 2410.52 ms. Allocated memory was 196.1 MB in the beginning and 252.7 MB in the end (delta: 56.6 MB). Free memory was 176.5 MB in the beginning and 221.6 MB in the end (delta: -45.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2021-07-14 02:10:14,052 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 196.1 MB. Free memory is still 177.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 02:10:14,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.32 ms. Allocated memory is still 196.1 MB. Free memory was 176.5 MB in the beginning and 175.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 02:10:14,052 INFO L168 Benchmark]: Boogie Preprocessor took 9.16 ms. Allocated memory is still 196.1 MB. Free memory was 175.0 MB in the beginning and 174.1 MB in the end (delta: 891.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 02:10:14,052 INFO L168 Benchmark]: RCFGBuilder took 244.08 ms. Allocated memory is still 196.1 MB. Free memory was 174.0 MB in the beginning and 162.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-14 02:10:14,052 INFO L168 Benchmark]: TraceAbstraction took 2134.18 ms. Allocated memory was 196.1 MB in the beginning and 252.7 MB in the end (delta: 56.6 MB). Free memory was 162.1 MB in the beginning and 221.6 MB in the end (delta: -59.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 02:10:14,053 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 0.15 ms. Allocated memory is still 196.1 MB. Free memory is still 177.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.32 ms. Allocated memory is still 196.1 MB. Free memory was 176.5 MB in the beginning and 175.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.16 ms. Allocated memory is still 196.1 MB. Free memory was 175.0 MB in the beginning and 174.1 MB in the end (delta: 891.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 244.08 ms. Allocated memory is still 196.1 MB. Free memory was 174.0 MB in the beginning and 162.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2134.18 ms. Allocated memory was 196.1 MB in the beginning and 252.7 MB in the end (delta: 56.6 MB). Free memory was 162.1 MB in the beginning and 221.6 MB in the end (delta: -59.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 120, positive: 108, positive conditional: 108, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 120, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 120, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 120, positive: 105, positive conditional: 0, positive unconditional: 105, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 120, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 120, unknown conditional: 0, unknown unconditional: 120] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Independence queries for same thread: 0 - PositiveResult [Line: 60]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 60 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2054.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 24.9ms, AutomataDifference: 822.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 192.1ms, PartialOrderReductionTime: 173.4ms, HoareTripleCheckerStatistics: 368 SDtfs, 742 SDslu, 1167 SDs, 0 SdLazy, 388 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 223.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 728.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 73.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 279 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.2ms SsaConstructionTime, 62.0ms SatisfiabilityAnalysisTime, 734.9ms InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...