/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/POPL2022/add-sub02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 13:11:21,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 13:11:21,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 13:11:21,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-30 13:11:21,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-30 13:11:21,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-30 13:11:21,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-30 13:11:21,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-30 13:11:21,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-30 13:11:21,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-30 13:11:21,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-30 13:11:21,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-30 13:11:21,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-30 13:11:21,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-30 13:11:21,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-30 13:11:21,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-30 13:11:21,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-30 13:11:21,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-30 13:11:21,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-30 13:11:21,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-30 13:11:21,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-30 13:11:21,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-30 13:11:21,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-30 13:11:21,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-30 13:11:21,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-30 13:11:21,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-30 13:11:21,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-30 13:11:21,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-30 13:11:21,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-06-30 13:11:21,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 13:11:21,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 13:11:21,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 13:11:21,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 13:11:21,690 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 13:11:21,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 13:11:21,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 13:11:21,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 13:11:21,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 13:11:21,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 13:11:21,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 13:11:21,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 13:11:21,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 13:11:21,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 13:11:21,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 13:11:21,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 13:11:21,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 13:11:21,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 13:11:21,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 13:11:21,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 13:11:21,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 13:11:21,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 13:11:21,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 13:11:21,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 13:11:21,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 13:11:21,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 13:11:21,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 13:11:21,694 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 13:11:21,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-30 13:11:21,694 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-30 13:11:21,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 13:11:21,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 13:11:21,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 13:11:21,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 13:11:21,988 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 13:11:21,989 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 13:11:21,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/add-sub02.bpl [2021-06-30 13:11:21,990 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/add-sub02.bpl' [2021-06-30 13:11:22,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 13:11:22,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 13:11:22,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 13:11:22,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 13:11:22,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 13:11:22,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 13:11:22,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 13:11:22,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 13:11:22,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 13:11:22,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... [2021-06-30 13:11:22,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 13:11:22,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 13:11:22,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 13:11:22,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 13:11:22,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 13:11:22,122 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 13:11:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 13:11:22,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 13:11:22,124 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 13:11:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 13:11:22,124 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 13:11:22,125 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-30 13:11:22,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 13:11:22,232 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 13:11:22,233 INFO L202 PluginConnector]: Adding new model add-sub02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 01:11:22 BoogieIcfgContainer [2021-06-30 13:11:22,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 13:11:22,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 13:11:22,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 13:11:22,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 13:11:22,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 01:11:22" (1/2) ... [2021-06-30 13:11:22,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7989d86b and model type add-sub02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 01:11:22, skipping insertion in model container [2021-06-30 13:11:22,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "add-sub02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 01:11:22" (2/2) ... [2021-06-30 13:11:22,239 INFO L111 eAbstractionObserver]: Analyzing ICFG add-sub02.bpl [2021-06-30 13:11:22,246 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-30 13:11:22,246 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 13:11:22,246 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 13:11:22,247 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 13:11:22,271 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,272 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,273 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,273 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,274 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,274 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,275 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,276 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,276 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,276 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,277 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,277 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,280 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,284 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-30 13:11:22,293 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-30 13:11:22,318 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-30 13:11:22,331 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 13:11:22,331 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 13:11:22,331 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 13:11:22,331 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 13:11:22,331 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 13:11:22,331 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 13:11:22,331 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 13:11:22,332 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 13:11:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-30 13:11:22,442 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 13:11:22,443 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 13:11:22,443 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 13:11:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 13:11:22,447 INFO L82 PathProgramCache]: Analyzing trace with hash 879787068, now seen corresponding path program 1 times [2021-06-30 13:11:22,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 13:11:22,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670841905] [2021-06-30 13:11:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 13:11:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 13:11:22,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 13:11:22,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 13:11:22,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670841905] [2021-06-30 13:11:22,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670841905] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 13:11:22,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 13:11:22,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-30 13:11:22,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005506433] [2021-06-30 13:11:22,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-30 13:11:22,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 13:11:22,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-30 13:11:22,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 13:11:22,581 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 27 states have internal predecessors, (33), 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 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 13:11:22,656 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-06-30 13:11:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-30 13:11:22,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-06-30 13:11:22,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 13:11:22,669 INFO L225 Difference]: With dead ends: 44 [2021-06-30 13:11:22,669 INFO L226 Difference]: Without dead ends: 29 [2021-06-30 13:11:22,670 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-30 13:11:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-06-30 13:11:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-06-30 13:11:22,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2021-06-30 13:11:22,697 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 8 [2021-06-30 13:11:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 13:11:22,698 INFO L482 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2021-06-30 13:11:22,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2021-06-30 13:11:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-30 13:11:22,700 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 13:11:22,700 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 13:11:22,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-30 13:11:22,701 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 13:11:22,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 13:11:22,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1467280974, now seen corresponding path program 1 times [2021-06-30 13:11:22,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 13:11:22,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600203057] [2021-06-30 13:11:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 13:11:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 13:11:22,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-30 13:11:22,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 13:11:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 13:11:22,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 13:11:22,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600203057] [2021-06-30 13:11:22,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600203057] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 13:11:22,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 13:11:22,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 13:11:22,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692102142] [2021-06-30 13:11:22,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 13:11:22,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 13:11:22,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 13:11:22,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 13:11:22,770 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 13:11:22,802 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-06-30 13:11:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 13:11:22,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-06-30 13:11:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 13:11:22,804 INFO L225 Difference]: With dead ends: 36 [2021-06-30 13:11:22,804 INFO L226 Difference]: Without dead ends: 33 [2021-06-30 13:11:22,804 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 13:11:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-06-30 13:11:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2021-06-30 13:11:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2021-06-30 13:11:22,807 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2021-06-30 13:11:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 13:11:22,808 INFO L482 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-06-30 13:11:22,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2021-06-30 13:11:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-30 13:11:22,808 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 13:11:22,808 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 13:11:22,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-30 13:11:22,808 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 13:11:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 13:11:22,809 INFO L82 PathProgramCache]: Analyzing trace with hash 781559954, now seen corresponding path program 1 times [2021-06-30 13:11:22,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 13:11:22,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91914596] [2021-06-30 13:11:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 13:11:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 13:11:22,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-30 13:11:22,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 13:11:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 13:11:22,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 13:11:22,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91914596] [2021-06-30 13:11:22,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91914596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 13:11:22,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 13:11:22,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-30 13:11:22,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588893789] [2021-06-30 13:11:22,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-30 13:11:22,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 13:11:22,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-30 13:11:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 13:11:22,842 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 13:11:22,866 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2021-06-30 13:11:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-30 13:11:22,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-06-30 13:11:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 13:11:22,867 INFO L225 Difference]: With dead ends: 41 [2021-06-30 13:11:22,867 INFO L226 Difference]: Without dead ends: 34 [2021-06-30 13:11:22,867 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-30 13:11:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-06-30 13:11:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-06-30 13:11:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2021-06-30 13:11:22,871 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 42 transitions. Word has length 11 [2021-06-30 13:11:22,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 13:11:22,871 INFO L482 AbstractCegarLoop]: Abstraction has 30 states and 42 transitions. [2021-06-30 13:11:22,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2021-06-30 13:11:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-30 13:11:22,872 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 13:11:22,872 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 13:11:22,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-30 13:11:22,872 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 13:11:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 13:11:22,873 INFO L82 PathProgramCache]: Analyzing trace with hash 820782400, now seen corresponding path program 1 times [2021-06-30 13:11:22,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 13:11:22,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245681223] [2021-06-30 13:11:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 13:11:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 13:11:22,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,913 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-30 13:11:22,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 13:11:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 13:11:22,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 13:11:22,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245681223] [2021-06-30 13:11:22,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245681223] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-30 13:11:22,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-30 13:11:22,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-30 13:11:22,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586918020] [2021-06-30 13:11:22,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 13:11:22,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 13:11:22,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 13:11:22,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 13:11:22,919 INFO L87 Difference]: Start difference. First operand 30 states and 42 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 13:11:22,949 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2021-06-30 13:11:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 13:11:22,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-30 13:11:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 13:11:22,950 INFO L225 Difference]: With dead ends: 44 [2021-06-30 13:11:22,950 INFO L226 Difference]: Without dead ends: 37 [2021-06-30 13:11:22,951 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 13:11:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-06-30 13:11:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2021-06-30 13:11:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-06-30 13:11:22,954 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2021-06-30 13:11:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 13:11:22,954 INFO L482 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-06-30 13:11:22,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-06-30 13:11:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-30 13:11:22,955 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 13:11:22,955 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 13:11:22,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-30 13:11:22,955 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 13:11:22,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 13:11:22,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1708527484, now seen corresponding path program 2 times [2021-06-30 13:11:22,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 13:11:22,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516428419] [2021-06-30 13:11:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 13:11:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 13:11:22,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:22,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:22,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-30 13:11:23,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 13:11:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 13:11:23,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 13:11:23,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516428419] [2021-06-30 13:11:23,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516428419] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 13:11:23,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559262519] [2021-06-30 13:11:23,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 13:11:23,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-30 13:11:23,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-30 13:11:23,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-30 13:11:23,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 13:11:23,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:23,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:23,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:23,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:23,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,176 INFO L142 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-06-30 13:11:23,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,194 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-06-30 13:11:23,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 13:11:23,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559262519] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 13:11:23,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 13:11:23,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-30 13:11:23,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152102191] [2021-06-30 13:11:23,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 13:11:23,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 13:11:23,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 13:11:23,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 13:11:23,241 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:23,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 13:11:23,277 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2021-06-30 13:11:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 13:11:23,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-30 13:11:23,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 13:11:23,278 INFO L225 Difference]: With dead ends: 47 [2021-06-30 13:11:23,278 INFO L226 Difference]: Without dead ends: 44 [2021-06-30 13:11:23,279 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 13:11:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-06-30 13:11:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2021-06-30 13:11:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2021-06-30 13:11:23,282 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 14 [2021-06-30 13:11:23,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 13:11:23,282 INFO L482 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2021-06-30 13:11:23,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:23,282 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2021-06-30 13:11:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-30 13:11:23,283 INFO L496 BasicCegarLoop]: Found error trace [2021-06-30 13:11:23,283 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-30 13:11:23,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 13:11:23,484 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-30 13:11:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 13:11:23,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1979691694, now seen corresponding path program 3 times [2021-06-30 13:11:23,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 13:11:23,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996418275] [2021-06-30 13:11:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 13:11:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 13:11:23,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-30 13:11:23,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-30 13:11:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 13:11:23,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 13:11:23,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996418275] [2021-06-30 13:11:23,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996418275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 13:11:23,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051193443] [2021-06-30 13:11:23,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 13:11:23,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-30 13:11:23,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-30 13:11:23,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-30 13:11:23,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 13:11:23,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:23,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:23,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:23,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-30 13:11:23,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-30 13:11:23,637 INFO L142 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-06-30 13:11:23,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,641 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-06-30 13:11:23,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,665 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-06-30 13:11:23,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-30 13:11:23,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-30 13:11:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 13:11:23,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051193443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 13:11:23,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 13:11:23,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-30 13:11:23,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822388359] [2021-06-30 13:11:23,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-30 13:11:23,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 13:11:23,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-30 13:11:23,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-30 13:11:23,692 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-30 13:11:23,730 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2021-06-30 13:11:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-30 13:11:23,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-06-30 13:11:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-30 13:11:23,732 INFO L225 Difference]: With dead ends: 37 [2021-06-30 13:11:23,732 INFO L226 Difference]: Without dead ends: 0 [2021-06-30 13:11:23,732 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-30 13:11:23,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-30 13:11:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-30 13:11:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-30 13:11:23,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-06-30 13:11:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-30 13:11:23,733 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-30 13:11:23,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-30 13:11:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-30 13:11:23,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-30 13:11:23,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 13:11:23,950 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-30 13:11:23,951 INFO L202 PluginConnector]: Adding new model add-sub02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.06 01:11:23 BasicIcfg [2021-06-30 13:11:23,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-30 13:11:23,952 INFO L168 Benchmark]: Toolchain (without parser) took 1931.08 ms. Allocated memory is still 185.6 MB. Free memory was 164.1 MB in the beginning and 122.2 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2021-06-30 13:11:23,952 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.41 ms. Allocated memory is still 185.6 MB. Free memory is still 165.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-30 13:11:23,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 185.6 MB. Free memory was 164.0 MB in the beginning and 162.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-30 13:11:23,952 INFO L168 Benchmark]: Boogie Preprocessor took 11.31 ms. Allocated memory is still 185.6 MB. Free memory was 162.6 MB in the beginning and 161.7 MB in the end (delta: 912.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-30 13:11:23,952 INFO L168 Benchmark]: RCFGBuilder took 164.05 ms. Allocated memory is still 185.6 MB. Free memory was 161.7 MB in the beginning and 153.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-06-30 13:11:23,952 INFO L168 Benchmark]: TraceAbstraction took 1716.81 ms. Allocated memory is still 185.6 MB. Free memory was 152.8 MB in the beginning and 122.2 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. [2021-06-30 13:11:23,953 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 0.41 ms. Allocated memory is still 185.6 MB. Free memory is still 165.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 185.6 MB. Free memory was 164.0 MB in the beginning and 162.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.31 ms. Allocated memory is still 185.6 MB. Free memory was 162.6 MB in the beginning and 161.7 MB in the end (delta: 912.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 164.05 ms. Allocated memory is still 185.6 MB. Free memory was 161.7 MB in the beginning and 153.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1716.81 ms. Allocated memory is still 185.6 MB. Free memory was 152.8 MB in the beginning and 122.2 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 30, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 24, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 48, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 6 - PositiveResult [Line: 14]: 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 4 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1619.9ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 8.3ms, AutomataDifference: 277.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 101.0ms, PartialOrderReductionTime: 91.5ms, HoareTripleCheckerStatistics: 68 SDtfs, 7 SDslu, 84 SDs, 0 SdLazy, 141 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 169.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.9ms SsaConstructionTime, 50.3ms SatisfiabilityAnalysisTime, 549.5ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 674 SizeOfPredicates, 0 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 10/20 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...