/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/bluetooth-serverassert04.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 10:04:40,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 10:04:40,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 10:04:40,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 10:04:40,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 10:04:40,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 10:04:40,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 10:04:40,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 10:04:40,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 10:04:40,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 10:04:40,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 10:04:40,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 10:04:40,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 10:04:40,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 10:04:40,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 10:04:40,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 10:04:40,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 10:04:40,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 10:04:40,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 10:04:40,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 10:04:40,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 10:04:40,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 10:04:40,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 10:04:40,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 10:04:40,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-01 10:04:40,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-01 10:04:40,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-01 10:04:40,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-01 10:04:40,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-01 10:04:40,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-01 10:04:40,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-01 10:04:40,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-01 10:04:40,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-01 10:04:40,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-01 10:04:40,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-01 10:04:40,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-01 10:04:40,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-01 10:04:40,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-01 10:04:40,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 10:04:40,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 10:04:40,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 10:04:40,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-01 10:04:40,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 10:04:40,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 10:04:40,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 10:04:40,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 10:04:40,716 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 10:04:40,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 10:04:40,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 10:04:40,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 10:04:40,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 10:04:40,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 10:04:40,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 10:04:40,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 10:04:40,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 10:04:40,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 10:04:40,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 10:04:40,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 10:04:40,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 10:04:40,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 10:04:40,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 10:04:40,719 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 10:04:40,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 10:04:40,720 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-01 10:04:40,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 10:04:40,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 10:04:41,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 10:04:41,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 10:04:41,015 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 10:04:41,020 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 10:04:41,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert04.bpl [2021-07-01 10:04:41,021 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert04.bpl' [2021-07-01 10:04:41,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 10:04:41,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 10:04:41,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 10:04:41,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 10:04:41,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 10:04:41,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 10:04:41,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 10:04:41,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 10:04:41,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 10:04:41,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... [2021-07-01 10:04:41,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 10:04:41,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 10:04:41,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 10:04:41,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 10:04:41,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 10:04:41,153 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 10:04:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 10:04:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 10:04:41,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 10:04:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 10:04:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 10:04:41,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 10:04:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 10:04:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 10:04:41,156 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 10:04:41,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 10:04:41,365 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-01 10:04:41,365 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 10:04:41,366 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:04:41 BoogieIcfgContainer [2021-07-01 10:04:41,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 10:04:41,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 10:04:41,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 10:04:41,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 10:04:41,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:41" (1/2) ... [2021-07-01 10:04:41,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cf7a4a and model type bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:04:41, skipping insertion in model container [2021-07-01 10:04:41,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:04:41" (2/2) ... [2021-07-01 10:04:41,371 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert04.bpl [2021-07-01 10:04:41,374 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 10:04:41,374 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 10:04:41,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 10:04:41,375 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 10:04:41,427 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 10:04:41,443 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 10:04:41,468 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:04:41,468 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:04:41,468 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:04:41,468 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:04:41,469 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:04:41,469 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:04:41,469 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:04:41,469 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0======== [2021-07-01 10:04:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 1217 states, 1205 states have (on average 4.765145228215768) internal successors, (5742), 1216 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-01 10:04:42,035 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:42,036 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:42,036 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:42,040 INFO L82 PathProgramCache]: Analyzing trace with hash -945797515, now seen corresponding path program 1 times [2021-07-01 10:04:42,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:42,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471982834] [2021-07-01 10:04:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:42,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:42,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:42,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:42,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:42,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:42,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471982834] [2021-07-01 10:04:42,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471982834] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:42,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:42,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 10:04:42,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030451735] [2021-07-01 10:04:42,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 10:04:42,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:42,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 10:04:42,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-01 10:04:42,180 INFO L87 Difference]: Start difference. First operand has 1217 states, 1205 states have (on average 4.765145228215768) internal successors, (5742), 1216 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:42,283 INFO L93 Difference]: Finished difference Result 2610 states and 12312 transitions. [2021-07-01 10:04:42,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:04:42,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-07-01 10:04:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:42,328 INFO L225 Difference]: With dead ends: 2610 [2021-07-01 10:04:42,329 INFO L226 Difference]: Without dead ends: 2586 [2021-07-01 10:04:42,329 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-01 10:04:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-07-01 10:04:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2198. [2021-07-01 10:04:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 2196 states have (on average 4.719489981785064) internal successors, (10364), 2197 states have internal predecessors, (10364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 10364 transitions. [2021-07-01 10:04:42,573 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 10364 transitions. Word has length 10 [2021-07-01 10:04:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:42,574 INFO L482 AbstractCegarLoop]: Abstraction has 2198 states and 10364 transitions. [2021-07-01 10:04:42,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 10364 transitions. [2021-07-01 10:04:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-01 10:04:42,576 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:42,576 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:42,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 10:04:42,592 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:42,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1621663105, now seen corresponding path program 1 times [2021-07-01 10:04:42,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:42,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649484195] [2021-07-01 10:04:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:42,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:42,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:42,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:42,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:42,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649484195] [2021-07-01 10:04:42,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649484195] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:42,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:42,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 10:04:42,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611517908] [2021-07-01 10:04:42,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 10:04:42,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:42,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 10:04:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:04:42,621 INFO L87 Difference]: Start difference. First operand 2198 states and 10364 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:42,663 INFO L93 Difference]: Finished difference Result 2197 states and 8125 transitions. [2021-07-01 10:04:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:04:42,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-07-01 10:04:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:42,674 INFO L225 Difference]: With dead ends: 2197 [2021-07-01 10:04:42,674 INFO L226 Difference]: Without dead ends: 1973 [2021-07-01 10:04:42,675 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:04:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2021-07-01 10:04:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1973. [2021-07-01 10:04:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1971 states have (on average 3.7579908675799087) internal successors, (7407), 1972 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 7407 transitions. [2021-07-01 10:04:42,769 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 7407 transitions. Word has length 12 [2021-07-01 10:04:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:42,769 INFO L482 AbstractCegarLoop]: Abstraction has 1973 states and 7407 transitions. [2021-07-01 10:04:42,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 7407 transitions. [2021-07-01 10:04:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 10:04:42,771 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:42,771 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:42,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 10:04:42,772 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:42,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:42,772 INFO L82 PathProgramCache]: Analyzing trace with hash 553300184, now seen corresponding path program 1 times [2021-07-01 10:04:42,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:42,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242349852] [2021-07-01 10:04:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:42,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:42,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:42,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:42,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:42,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:42,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:42,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:42,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242349852] [2021-07-01 10:04:42,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242349852] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:42,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:42,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 10:04:42,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607996830] [2021-07-01 10:04:42,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 10:04:42,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:42,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 10:04:42,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:04:42,858 INFO L87 Difference]: Start difference. First operand 1973 states and 7407 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:42,937 INFO L93 Difference]: Finished difference Result 2464 states and 9353 transitions. [2021-07-01 10:04:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:04:42,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-07-01 10:04:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:42,948 INFO L225 Difference]: With dead ends: 2464 [2021-07-01 10:04:42,949 INFO L226 Difference]: Without dead ends: 2464 [2021-07-01 10:04:42,949 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:04:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2021-07-01 10:04:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1779. [2021-07-01 10:04:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1777 states have (on average 3.8508722566122677) internal successors, (6843), 1778 states have internal predecessors, (6843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 6843 transitions. [2021-07-01 10:04:43,078 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 6843 transitions. Word has length 13 [2021-07-01 10:04:43,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:43,079 INFO L482 AbstractCegarLoop]: Abstraction has 1779 states and 6843 transitions. [2021-07-01 10:04:43,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 6843 transitions. [2021-07-01 10:04:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 10:04:43,080 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:43,080 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:43,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 10:04:43,080 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash 553209974, now seen corresponding path program 2 times [2021-07-01 10:04:43,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:43,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118873903] [2021-07-01 10:04:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:43,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:43,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:43,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:43,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118873903] [2021-07-01 10:04:43,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118873903] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:43,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:43,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 10:04:43,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807844281] [2021-07-01 10:04:43,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 10:04:43,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:43,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 10:04:43,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-01 10:04:43,145 INFO L87 Difference]: Start difference. First operand 1779 states and 6843 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:43,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:43,275 INFO L93 Difference]: Finished difference Result 2821 states and 10585 transitions. [2021-07-01 10:04:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 10:04:43,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2021-07-01 10:04:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:43,288 INFO L225 Difference]: With dead ends: 2821 [2021-07-01 10:04:43,288 INFO L226 Difference]: Without dead ends: 2510 [2021-07-01 10:04:43,305 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-01 10:04:43,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2021-07-01 10:04:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2220. [2021-07-01 10:04:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2218 states have (on average 3.8151487826871056) internal successors, (8462), 2219 states have internal predecessors, (8462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 8462 transitions. [2021-07-01 10:04:43,412 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 8462 transitions. Word has length 13 [2021-07-01 10:04:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:43,412 INFO L482 AbstractCegarLoop]: Abstraction has 2220 states and 8462 transitions. [2021-07-01 10:04:43,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 8462 transitions. [2021-07-01 10:04:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-01 10:04:43,414 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:43,414 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:43,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 10:04:43,415 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:43,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:43,415 INFO L82 PathProgramCache]: Analyzing trace with hash -371436247, now seen corresponding path program 1 times [2021-07-01 10:04:43,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:43,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742441125] [2021-07-01 10:04:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:43,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:43,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:43,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:43,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:43,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:43,494 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-01 10:04:43,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:43,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:43,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742441125] [2021-07-01 10:04:43,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742441125] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:43,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:43,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 10:04:43,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824006684] [2021-07-01 10:04:43,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 10:04:43,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:43,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 10:04:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:04:43,502 INFO L87 Difference]: Start difference. First operand 2220 states and 8462 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:43,623 INFO L93 Difference]: Finished difference Result 3187 states and 11961 transitions. [2021-07-01 10:04:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 10:04:43,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-01 10:04:43,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:43,650 INFO L225 Difference]: With dead ends: 3187 [2021-07-01 10:04:43,650 INFO L226 Difference]: Without dead ends: 2633 [2021-07-01 10:04:43,650 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:04:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2021-07-01 10:04:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2464. [2021-07-01 10:04:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2462 states have (on average 3.8123476848090982) internal successors, (9386), 2463 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 9386 transitions. [2021-07-01 10:04:43,769 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 9386 transitions. Word has length 16 [2021-07-01 10:04:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:43,770 INFO L482 AbstractCegarLoop]: Abstraction has 2464 states and 9386 transitions. [2021-07-01 10:04:43,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 9386 transitions. [2021-07-01 10:04:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-07-01 10:04:43,775 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:43,775 INFO L504 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:43,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-01 10:04:43,775 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:43,775 INFO L82 PathProgramCache]: Analyzing trace with hash 250067573, now seen corresponding path program 2 times [2021-07-01 10:04:43,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:43,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342327935] [2021-07-01 10:04:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:43,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:43,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:43,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:43,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342327935] [2021-07-01 10:04:43,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342327935] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:04:43,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174854448] [2021-07-01 10:04:43,845 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 [2021-07-01 10:04:43,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 10:04:43,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 10:04:43,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-01 10:04:43,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 10:04:43,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:43,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:43,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:43,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:43,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:43,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:43,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:43,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,987 INFO L147 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size 6 [2021-07-01 10:04:43,987 INFO L142 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size [2021-07-01 10:04:43,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:43,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:43,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:43,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:43,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:43,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:43,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-01 10:04:43,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,000 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-07-01 10:04:44,003 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,006 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-07-01 10:04:44,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,030 INFO L142 QuantifierPusher]: treesize reduction 10, result has 33.3 percent of original size [2021-07-01 10:04:44,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-01 10:04:44,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:44,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174854448] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:04:44,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 10:04:44,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-07-01 10:04:44,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277308172] [2021-07-01 10:04:44,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 10:04:44,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:44,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 10:04:44,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-07-01 10:04:44,036 INFO L87 Difference]: Start difference. First operand 2464 states and 9386 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:44,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:44,157 INFO L93 Difference]: Finished difference Result 3100 states and 11863 transitions. [2021-07-01 10:04:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 10:04:44,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 [2021-07-01 10:04:44,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:44,173 INFO L225 Difference]: With dead ends: 3100 [2021-07-01 10:04:44,173 INFO L226 Difference]: Without dead ends: 2670 [2021-07-01 10:04:44,174 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-01 10:04:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2021-07-01 10:04:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2087. [2021-07-01 10:04:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2085 states have (on average 3.8191846522781776) internal successors, (7963), 2086 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:44,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 7963 transitions. [2021-07-01 10:04:44,234 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 7963 transitions. Word has length 17 [2021-07-01 10:04:44,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:44,234 INFO L482 AbstractCegarLoop]: Abstraction has 2087 states and 7963 transitions. [2021-07-01 10:04:44,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 7963 transitions. [2021-07-01 10:04:44,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-01 10:04:44,260 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:44,260 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:44,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-01 10:04:44,469 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:44,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:44,469 INFO L82 PathProgramCache]: Analyzing trace with hash 315317948, now seen corresponding path program 1 times [2021-07-01 10:04:44,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:44,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135664304] [2021-07-01 10:04:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:44,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:44,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:44,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:44,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:44,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:44,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:44,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:44,530 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-01 10:04:44,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:44,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:44,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135664304] [2021-07-01 10:04:44,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135664304] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:44,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:44,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 10:04:44,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904992101] [2021-07-01 10:04:44,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 10:04:44,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:44,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 10:04:44,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-01 10:04:44,541 INFO L87 Difference]: Start difference. First operand 2087 states and 7963 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:44,651 INFO L93 Difference]: Finished difference Result 3007 states and 11369 transitions. [2021-07-01 10:04:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 10:04:44,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-07-01 10:04:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:44,658 INFO L225 Difference]: With dead ends: 3007 [2021-07-01 10:04:44,658 INFO L226 Difference]: Without dead ends: 2447 [2021-07-01 10:04:44,658 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-01 10:04:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2021-07-01 10:04:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2287. [2021-07-01 10:04:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2285 states have (on average 3.827571115973742) internal successors, (8746), 2286 states have internal predecessors, (8746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 8746 transitions. [2021-07-01 10:04:44,709 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 8746 transitions. Word has length 19 [2021-07-01 10:04:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:44,709 INFO L482 AbstractCegarLoop]: Abstraction has 2287 states and 8746 transitions. [2021-07-01 10:04:44,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 8746 transitions. [2021-07-01 10:04:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-01 10:04:44,712 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:44,712 INFO L504 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:44,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-01 10:04:44,712 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1741718564, now seen corresponding path program 2 times [2021-07-01 10:04:44,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:44,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610522341] [2021-07-01 10:04:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:44,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:44,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:44,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610522341] [2021-07-01 10:04:44,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610522341] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:04:44,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38867610] [2021-07-01 10:04:44,808 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 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 [2021-07-01 10:04:44,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 10:04:44,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 10:04:44,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-01 10:04:44,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 10:04:44,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:44,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:44,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:44,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,926 INFO L147 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size 6 [2021-07-01 10:04:44,927 INFO L142 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size [2021-07-01 10:04:44,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:44,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:44,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,939 INFO L147 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size 6 [2021-07-01 10:04:44,939 INFO L142 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size [2021-07-01 10:04:44,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:44,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:44,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:44,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:44,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-01 10:04:44,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,957 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-07-01 10:04:44,960 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:44,961 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-07-01 10:04:44,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:44,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:44,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:44,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,010 INFO L142 QuantifierPusher]: treesize reduction 10, result has 33.3 percent of original size [2021-07-01 10:04:45,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-01 10:04:45,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:45,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38867610] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:04:45,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 10:04:45,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-07-01 10:04:45,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406512588] [2021-07-01 10:04:45,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-01 10:04:45,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:45,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-01 10:04:45,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-07-01 10:04:45,015 INFO L87 Difference]: Start difference. First operand 2287 states and 8746 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:45,137 INFO L93 Difference]: Finished difference Result 2418 states and 9195 transitions. [2021-07-01 10:04:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 10:04:45,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 20 [2021-07-01 10:04:45,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:45,142 INFO L225 Difference]: With dead ends: 2418 [2021-07-01 10:04:45,142 INFO L226 Difference]: Without dead ends: 1792 [2021-07-01 10:04:45,142 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-07-01 10:04:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2021-07-01 10:04:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1500. [2021-07-01 10:04:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1498 states have (on average 3.7563417890520694) internal successors, (5627), 1499 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5627 transitions. [2021-07-01 10:04:45,178 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5627 transitions. Word has length 20 [2021-07-01 10:04:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:45,179 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5627 transitions. [2021-07-01 10:04:45,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5627 transitions. [2021-07-01 10:04:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-01 10:04:45,181 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:45,181 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:45,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 10:04:45,397 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:45,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash 732647905, now seen corresponding path program 1 times [2021-07-01 10:04:45,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:45,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381599959] [2021-07-01 10:04:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:45,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:45,471 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-01 10:04:45,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:45,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:45,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381599959] [2021-07-01 10:04:45,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381599959] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:45,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:45,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 10:04:45,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481663160] [2021-07-01 10:04:45,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 10:04:45,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:45,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 10:04:45,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-07-01 10:04:45,483 INFO L87 Difference]: Start difference. First operand 1500 states and 5627 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:45,613 INFO L93 Difference]: Finished difference Result 1500 states and 5597 transitions. [2021-07-01 10:04:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 10:04:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2021-07-01 10:04:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:45,616 INFO L225 Difference]: With dead ends: 1500 [2021-07-01 10:04:45,616 INFO L226 Difference]: Without dead ends: 1022 [2021-07-01 10:04:45,616 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-07-01 10:04:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-07-01 10:04:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1022. [2021-07-01 10:04:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1020 states have (on average 3.6656862745098038) internal successors, (3739), 1021 states have internal predecessors, (3739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 3739 transitions. [2021-07-01 10:04:45,636 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 3739 transitions. Word has length 22 [2021-07-01 10:04:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:45,637 INFO L482 AbstractCegarLoop]: Abstraction has 1022 states and 3739 transitions. [2021-07-01 10:04:45,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 3739 transitions. [2021-07-01 10:04:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-01 10:04:45,639 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:45,639 INFO L504 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:45,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-01 10:04:45,639 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1118142688, now seen corresponding path program 2 times [2021-07-01 10:04:45,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:45,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899624988] [2021-07-01 10:04:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:45,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:45,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:45,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899624988] [2021-07-01 10:04:45,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899624988] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:04:45,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763615686] [2021-07-01 10:04:45,716 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-07-01 10:04:45,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 10:04:45,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 10:04:45,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-01 10:04:45,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 10:04:45,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:45,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:45,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,825 INFO L147 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size 6 [2021-07-01 10:04:45,825 INFO L142 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size [2021-07-01 10:04:45,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:45,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:45,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,837 INFO L147 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size 6 [2021-07-01 10:04:45,838 INFO L142 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size [2021-07-01 10:04:45,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:45,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:45,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,844 INFO L147 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size 6 [2021-07-01 10:04:45,844 INFO L142 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size [2021-07-01 10:04:45,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:45,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:45,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:45,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:45,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-01 10:04:45,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,852 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-07-01 10:04:45,853 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:45,853 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-07-01 10:04:45,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:45,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:45,872 INFO L142 QuantifierPusher]: treesize reduction 10, result has 33.3 percent of original size [2021-07-01 10:04:45,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-01 10:04:45,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:45,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:45,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763615686] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:04:45,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 10:04:45,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-07-01 10:04:45,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647629770] [2021-07-01 10:04:45,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-01 10:04:45,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:45,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-01 10:04:45,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-07-01 10:04:45,877 INFO L87 Difference]: Start difference. First operand 1022 states and 3739 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:45,974 INFO L93 Difference]: Finished difference Result 600 states and 2259 transitions. [2021-07-01 10:04:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 10:04:45,974 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 23 [2021-07-01 10:04:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:45,974 INFO L225 Difference]: With dead ends: 600 [2021-07-01 10:04:45,974 INFO L226 Difference]: Without dead ends: 0 [2021-07-01 10:04:45,974 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-07-01 10:04:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-01 10:04:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-01 10:04:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-01 10:04:45,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-07-01 10:04:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:45,975 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-01 10:04:45,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-01 10:04:45,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 10:04:46,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-07-01 10:04:46,177 INFO L301 ceAbstractionStarter]: Result for error location ServerThreadThread1of1ForFork0 was SAFE (1/2) [2021-07-01 10:04:46,178 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-01 10:04:46,179 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:04:46,179 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:04:46,179 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:04:46,179 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:04:46,179 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:04:46,179 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:04:46,179 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:04:46,179 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 10:04:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 281 states have (on average 2.402135231316726) internal successors, (675), 324 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:46,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 10:04:46,252 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/2) [2021-07-01 10:04:46,252 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 10:04:46,253 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:04:46 BasicIcfg [2021-07-01 10:04:46,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 10:04:46,254 INFO L168 Benchmark]: Toolchain (without parser) took 5210.95 ms. Allocated memory was 175.1 MB in the beginning and 340.8 MB in the end (delta: 165.7 MB). Free memory was 155.1 MB in the beginning and 277.1 MB in the end (delta: -121.9 MB). Peak memory consumption was 43.7 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:46,254 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 175.1 MB. Free memory is still 156.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 10:04:46,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.88 ms. Allocated memory is still 175.1 MB. Free memory was 155.0 MB in the beginning and 153.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:46,254 INFO L168 Benchmark]: Boogie Preprocessor took 11.41 ms. Allocated memory is still 175.1 MB. Free memory was 153.2 MB in the beginning and 152.4 MB in the end (delta: 836.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:46,254 INFO L168 Benchmark]: RCFGBuilder took 274.34 ms. Allocated memory is still 175.1 MB. Free memory was 152.3 MB in the beginning and 139.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:46,254 INFO L168 Benchmark]: TraceAbstraction took 4886.16 ms. Allocated memory was 175.1 MB in the beginning and 340.8 MB in the end (delta: 165.7 MB). Free memory was 139.0 MB in the beginning and 277.1 MB in the end (delta: -138.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:46,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 175.1 MB. Free memory is still 156.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.88 ms. Allocated memory is still 175.1 MB. Free memory was 155.0 MB in the beginning and 153.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.41 ms. Allocated memory is still 175.1 MB. Free memory was 153.2 MB in the beginning and 152.4 MB in the end (delta: 836.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 274.34 ms. Allocated memory is still 175.1 MB. Free memory was 152.3 MB in the beginning and 139.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4886.16 ms. Allocated memory was 175.1 MB in the beginning and 340.8 MB in the end (delta: 165.7 MB). Free memory was 139.0 MB in the beginning and 277.1 MB in the end (delta: -138.0 MB). Peak memory consumption was 28.0 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: 14737, positive: 10657, positive conditional: 10657, positive unconditional: 0, negative: 4080, negative conditional: 4080, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13243, positive: 10657, positive conditional: 0, positive unconditional: 10657, negative: 2586, negative conditional: 0, negative unconditional: 2586, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 258, positive: 205, positive conditional: 0, positive unconditional: 205, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 258, positive: 178, positive conditional: 0, positive unconditional: 178, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 80, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 275, positive: 122, positive conditional: 0, positive unconditional: 122, negative: 153, negative conditional: 0, negative unconditional: 153, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13243, positive: 10452, positive conditional: 0, positive unconditional: 10452, negative: 2533, negative conditional: 0, negative unconditional: 2533, unknown: 258, unknown conditional: 0, unknown unconditional: 258] , Statistics on independence cache: Total cache size (in pairs): 258, Positive cache size: 205, Positive conditional cache size: 0, Positive unconditional cache size: 205, Negative cache size: 53, Negative conditional cache size: 0, Negative unconditional cache size: 53, Independence queries for same thread: 1494 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1406, positive: 989, positive conditional: 989, positive unconditional: 0, negative: 417, negative conditional: 417, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1237, positive: 989, positive conditional: 0, positive unconditional: 989, negative: 248, negative conditional: 0, negative unconditional: 248, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 132, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 132, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1237, positive: 881, positive conditional: 0, positive unconditional: 881, negative: 224, negative conditional: 0, negative unconditional: 224, unknown: 132, unknown conditional: 0, unknown unconditional: 132] , Statistics on independence cache: Total cache size (in pairs): 132, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Independence queries for same thread: 169 - PositiveResult [Line: 73]: 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: ServerThreadThread1of1ForFork0 with 1 thread instances CFG has 8 procedures, 47 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4710.7ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 68.8ms, AutomataDifference: 1233.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 541.9ms, PartialOrderReductionTime: 529.5ms, HoareTripleCheckerStatistics: 387 SDtfs, 509 SDslu, 1055 SDs, 0 SdLazy, 1153 SolverSat, 260 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 556.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 356.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2464occurred in iteration=5, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 823.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2567 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.9ms SsaConstructionTime, 116.0ms SatisfiabilityAnalysisTime, 966.3ms InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 1081 SizeOfPredicates, 6 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 0/6 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 8 procedures, 47 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 72.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 1.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 71.3ms, PartialOrderReductionTime: 70.6ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: 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...