/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-POR-NewStatesSleepUncond-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 12:05:59,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 12:05:59,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 12:05:59,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 12:05:59,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 12:05:59,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 12:05:59,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 12:05:59,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 12:05:59,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 12:05:59,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 12:05:59,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 12:05:59,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 12:05:59,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 12:05:59,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 12:05:59,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 12:05:59,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 12:05:59,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 12:05:59,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 12:05:59,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 12:05:59,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 12:05:59,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 12:05:59,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 12:05:59,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 12:05:59,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 12:05:59,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-01 12:05:59,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-01 12:05:59,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-01 12:05:59,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-01 12:05:59,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-01 12:05:59,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-01 12:05:59,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-01 12:05:59,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-01 12:05:59,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-01 12:05:59,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-01 12:05:59,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-01 12:05:59,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-01 12:05:59,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-01 12:05:59,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-01 12:05:59,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 12:05:59,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 12:05:59,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 12:05:59,725 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-POR-NewStatesSleepUncond-NoLbe.epf [2021-07-01 12:05:59,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 12:05:59,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 12:05:59,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 12:05:59,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 12:05:59,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 12:05:59,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 12:05:59,765 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 12:05:59,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 12:05:59,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 12:05:59,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 12:05:59,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 12:05:59,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 12:05:59,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 12:05:59,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 12:05:59,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 12:05:59,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 12:05:59,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 12:05:59,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 12:05:59,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 12:05:59,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 12:05:59,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 12:05:59,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 12:05:59,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 12:05:59,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 12:05:59,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 12:05:59,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 12:05:59,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 12:05:59,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 12:05:59,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 12:05:59,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 12:05:59,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 12:05:59,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 12:05:59,770 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-01 12:05:59,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-01 12:05:59,770 INFO L138 SettingsManager]: * Use conditional POR in concurrent analysis=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 12:06:00,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 12:06:00,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 12:06:00,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 12:06:00,127 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 12:06:00,129 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 12:06:00,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert06.bpl [2021-07-01 12:06:00,130 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert06.bpl' [2021-07-01 12:06:00,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 12:06:00,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 12:06:00,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 12:06:00,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 12:06:00,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 12:06:00,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 12:06:00,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 12:06:00,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 12:06:00,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 12:06:00,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/1) ... [2021-07-01 12:06:00,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 12:06:00,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 12:06:00,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 12:06:00,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 12:06:00,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (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 12:06:00,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 12:06:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 12:06:00,274 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 12:06:00,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 12:06:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 12:06:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 12:06:00,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 12:06:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 12:06:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 12:06:00,276 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 12:06:00,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 12:06:00,469 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-01 12:06:00,470 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 12:06:00,472 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:06:00 BoogieIcfgContainer [2021-07-01 12:06:00,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 12:06:00,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 12:06:00,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 12:06:00,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 12:06:00,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:06:00" (1/2) ... [2021-07-01 12:06:00,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5d7440 and model type bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:06:00, skipping insertion in model container [2021-07-01 12:06:00,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:06:00" (2/2) ... [2021-07-01 12:06:00,478 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert06.bpl [2021-07-01 12:06:00,482 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 12:06:00,483 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 12:06:00,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 12:06:00,483 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 12:06:00,521 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 12:06:00,558 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-01 12:06:00,674 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 12:06:00,674 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 12:06:00,674 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 12:06:00,675 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 12:06:00,675 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 12:06:00,675 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 12:06:00,675 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 12:06:00,675 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0======== [2021-07-01 12:06:00,724 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:00,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1874355411, now seen corresponding path program 1 times [2021-07-01 12:06:00,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:00,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388752345] [2021-07-01 12:06:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:00,963 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 12:06:00,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:00,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388752345] [2021-07-01 12:06:00,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388752345] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:06:00,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:06:00,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 12:06:00,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371515562] [2021-07-01 12:06:00,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 12:06:00,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:00,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 12:06:00,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-01 12:06:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:00,993 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:00,996 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 12:06:00,996 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:01,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 12:06:01,079 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:01,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1383699331, now seen corresponding path program 1 times [2021-07-01 12:06:01,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:01,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583725423] [2021-07-01 12:06:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:01,133 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 12:06:01,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:01,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583725423] [2021-07-01 12:06:01,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583725423] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:06:01,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:06:01,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 12:06:01,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473676621] [2021-07-01 12:06:01,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 12:06:01,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:01,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 12:06:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 12:06:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:01,140 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:01,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 12:06:01,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:01,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:01,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:01,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 12:06:01,497 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:01,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:01,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1067509613, now seen corresponding path program 1 times [2021-07-01 12:06:01,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:01,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832940562] [2021-07-01 12:06:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:01,611 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 12:06:01,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:01,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832940562] [2021-07-01 12:06:01,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832940562] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:06:01,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:06:01,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 12:06:01,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388944161] [2021-07-01 12:06:01,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 12:06:01,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:01,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 12:06:01,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 12:06:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:01,613 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:01,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 12:06:01,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:01,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:01,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:01,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 12:06:01,748 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:01,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1068046223, now seen corresponding path program 2 times [2021-07-01 12:06:01,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:01,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861120691] [2021-07-01 12:06:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:01,858 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 12:06:01,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:01,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861120691] [2021-07-01 12:06:01,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861120691] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:06:01,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:06:01,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 12:06:01,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580095456] [2021-07-01 12:06:01,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 12:06:01,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:01,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 12:06:01,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-01 12:06:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:01,863 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:01,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 12:06:01,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:01,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:01,864 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:01,864 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:02,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 12:06:02,112 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:02,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1063381021, now seen corresponding path program 1 times [2021-07-01 12:06:02,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:02,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112914050] [2021-07-01 12:06:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-01 12:06:02,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:02,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112914050] [2021-07-01 12:06:02,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112914050] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:02,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107316235] [2021-07-01 12:06:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 12:06:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:02,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-01 12:06:02,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:06:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-01 12:06:02,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107316235] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:02,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:06:02,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-01 12:06:02,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214486582] [2021-07-01 12:06:02,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 12:06:02,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:02,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 12:06:02,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 12:06:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:02,453 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:02,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 12:06:02,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:02,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:02,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:02,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:02,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:02,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:02,826 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:02,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2143515352, now seen corresponding path program 2 times [2021-07-01 12:06:02,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:02,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722928667] [2021-07-01 12:06:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-01 12:06:02,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:02,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722928667] [2021-07-01 12:06:02,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722928667] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:02,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782160149] [2021-07-01 12:06:02,940 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:02,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 12:06:02,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 12:06:02,975 WARN L261 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 35 conjunts are in the unsatisfiable core [2021-07-01 12:06:02,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:06:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-01 12:06:03,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782160149] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:03,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:06:03,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-07-01 12:06:03,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773227605] [2021-07-01 12:06:03,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-01 12:06:03,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-01 12:06:03,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-07-01 12:06:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:03,128 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:03,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 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 12:06:03,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:03,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:03,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:03,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:03,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:03,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:03,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:03,747 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:03,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:03,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1094409701, now seen corresponding path program 1 times [2021-07-01 12:06:03,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:03,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113214249] [2021-07-01 12:06:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-07-01 12:06:03,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:03,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113214249] [2021-07-01 12:06:03,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113214249] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:03,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978267300] [2021-07-01 12:06:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:03,940 WARN L261 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 73 conjunts are in the unsatisfiable core [2021-07-01 12:06:03,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:06:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-07-01 12:06:04,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978267300] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:04,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:06:04,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-01 12:06:04,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925976660] [2021-07-01 12:06:04,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 12:06:04,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:04,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 12:06:04,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-01 12:06:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:04,118 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:04,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 12:06:04,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:04,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:04,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:04,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:04,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:04,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:04,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:04,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:04,629 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:04,630 INFO L82 PathProgramCache]: Analyzing trace with hash 652394992, now seen corresponding path program 2 times [2021-07-01 12:06:04,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:04,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859142090] [2021-07-01 12:06:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-07-01 12:06:04,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:04,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859142090] [2021-07-01 12:06:04,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859142090] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:04,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040689425] [2021-07-01 12:06:04,774 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:04,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 12:06:04,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 12:06:04,836 WARN L261 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 95 conjunts are in the unsatisfiable core [2021-07-01 12:06:04,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:06:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-07-01 12:06:05,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040689425] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:05,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:06:05,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-07-01 12:06:05,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100650065] [2021-07-01 12:06:05,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-01 12:06:05,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:05,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-01 12:06:05,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-01 12:06:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:05,046 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:05,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 14 states have internal predecessors, (72), 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 12:06:05,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:05,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:05,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:05,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:05,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:05,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:05,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:05,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:06,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:06,361 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:06,362 INFO L82 PathProgramCache]: Analyzing trace with hash 152145735, now seen corresponding path program 1 times [2021-07-01 12:06:06,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:06,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229277291] [2021-07-01 12:06:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-07-01 12:06:06,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:06,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229277291] [2021-07-01 12:06:06,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229277291] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:06,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140935724] [2021-07-01 12:06:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:06,803 WARN L261 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 233 conjunts are in the unsatisfiable core [2021-07-01 12:06:06,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:06:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-07-01 12:06:07,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140935724] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:07,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:06:07,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-07-01 12:06:07,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780869894] [2021-07-01 12:06:07,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 12:06:07,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:07,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 12:06:07,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-07-01 12:06:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:07,097 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:07,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 12:06:07,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:07,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:07,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:07,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:07,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:07,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:07,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:07,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:07,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:06:08,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:08,037 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:08,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1611340542, now seen corresponding path program 2 times [2021-07-01 12:06:08,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:08,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609790461] [2021-07-01 12:06:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 439 proven. 160 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-07-01 12:06:08,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:08,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609790461] [2021-07-01 12:06:08,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609790461] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:08,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559164390] [2021-07-01 12:06:08,461 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:08,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 12:06:08,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 12:06:08,614 WARN L261 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 291 conjunts are in the unsatisfiable core [2021-07-01 12:06:08,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:06:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 0 proven. 599 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-07-01 12:06:09,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559164390] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:09,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:06:09,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-07-01 12:06:09,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527725197] [2021-07-01 12:06:09,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-01 12:06:09,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:09,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-01 12:06:09,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-07-01 12:06:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:09,007 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:09,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:06:09,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:06:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:06:13,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-07-01 12:06:13,448 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:13,448 INFO L82 PathProgramCache]: Analyzing trace with hash 469822755, now seen corresponding path program 1 times [2021-07-01 12:06:13,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:13,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556122433] [2021-07-01 12:06:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 14715 backedges. 0 proven. 9650 refuted. 0 times theorem prover too weak. 5065 trivial. 0 not checked. [2021-07-01 12:06:14,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:14,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556122433] [2021-07-01 12:06:14,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556122433] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:14,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010681863] [2021-07-01 12:06:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:15,087 WARN L261 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 905 conjunts are in the unsatisfiable core [2021-07-01 12:06:15,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:06:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14715 backedges. 0 proven. 9650 refuted. 0 times theorem prover too weak. 5065 trivial. 0 not checked. [2021-07-01 12:06:16,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010681863] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:16,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:06:16,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-07-01 12:06:16,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132374546] [2021-07-01 12:06:16,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-01 12:06:16,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:16,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-01 12:06:16,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-01 12:06:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:16,060 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:16,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 12:06:16,060 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:16,060 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:16,060 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:16,060 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:16,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:16,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:16,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:16,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:16,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:06:16,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:06:16,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:06:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:06:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 12:06:19,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-07-01 12:06:19,301 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:19,301 INFO L82 PathProgramCache]: Analyzing trace with hash 136609954, now seen corresponding path program 2 times [2021-07-01 12:06:19,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:19,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992229135] [2021-07-01 12:06:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14727 backedges. 6609 proven. 3094 refuted. 0 times theorem prover too weak. 5024 trivial. 0 not checked. [2021-07-01 12:06:23,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:23,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992229135] [2021-07-01 12:06:23,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992229135] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:23,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445064422] [2021-07-01 12:06:23,479 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:23,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 12:06:23,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 12:06:23,957 WARN L261 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 1135 conjunts are in the unsatisfiable core [2021-07-01 12:06:23,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:06:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14727 backedges. 0 proven. 9698 refuted. 0 times theorem prover too weak. 5029 trivial. 0 not checked. [2021-07-01 12:06:24,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445064422] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:24,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:06:24,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-07-01 12:06:24,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979328819] [2021-07-01 12:06:24,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-01 12:06:24,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:06:24,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-01 12:06:24,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-07-01 12:06:24,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:24,943 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:06:24,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 18 states have internal predecessors, (118), 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 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 12:06:24,944 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:06:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:06:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:06:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:06:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:06:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:06:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:06:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:06:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:06:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 12:06:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-01 12:06:51,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:51,337 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:06:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:06:51,338 INFO L82 PathProgramCache]: Analyzing trace with hash 202326289, now seen corresponding path program 1 times [2021-07-01 12:06:51,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:06:51,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209898934] [2021-07-01 12:06:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:06:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 178880 backedges. 0 proven. 124169 refuted. 0 times theorem prover too weak. 54711 trivial. 0 not checked. [2021-07-01 12:06:58,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:06:58,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209898934] [2021-07-01 12:06:58,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209898934] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:06:58,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88569747] [2021-07-01 12:06:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:06:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:06:59,141 WARN L261 TraceCheckSpWp]: Trace formula consists of 4858 conjuncts, 3221 conjunts are in the unsatisfiable core [2021-07-01 12:06:59,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:07:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 178880 backedges. 0 proven. 124169 refuted. 0 times theorem prover too weak. 54711 trivial. 0 not checked. [2021-07-01 12:07:01,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88569747] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:07:01,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:07:01,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-07-01 12:07:01,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686862268] [2021-07-01 12:07:01,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 12:07:01,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:07:01,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 12:07:01,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-07-01 12:07:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:07:01,865 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:07:01,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:07:01,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:07:01,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:07:01,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 12:07:01,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-01 12:07:01,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:07:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:07:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:07:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:07:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:07:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:07:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:07:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:07:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:07:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:07:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:07:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 12:07:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-01 12:07:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 12:07:21,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:07:21,921 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:07:21,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:07:21,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1793370833, now seen corresponding path program 2 times [2021-07-01 12:07:21,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:07:21,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536345337] [2021-07-01 12:07:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:07:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:09:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 178910 backedges. 89969 proven. 34308 refuted. 0 times theorem prover too weak. 54633 trivial. 0 not checked. [2021-07-01 12:09:31,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:09:31,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536345337] [2021-07-01 12:09:31,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536345337] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:09:31,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750847753] [2021-07-01 12:09:31,672 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:09:36,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 12:09:36,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 12:09:36,114 WARN L261 TraceCheckSpWp]: Trace formula consists of 4861 conjuncts, 4030 conjunts are in the unsatisfiable core [2021-07-01 12:09:36,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:09:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 178910 backedges. 0 proven. 124268 refuted. 0 times theorem prover too weak. 54642 trivial. 0 not checked. [2021-07-01 12:09:38,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750847753] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:09:38,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:09:38,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2021-07-01 12:09:38,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315582582] [2021-07-01 12:09:38,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-01 12:09:38,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:09:38,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-01 12:09:38,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2021-07-01 12:09:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:09:38,782 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:09:38,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 20 states have internal predecessors, (156), 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 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 12:09:38,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-01 12:10:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 12:10:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-01 12:10:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 12:10:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 12:10:27,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-07-01 12:10:27,763 INFO L301 ceAbstractionStarter]: Result for error location ServerThreadThread1of1ForFork0 was SAFE (1/2) [2021-07-01 12:10:27,765 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-01 12:10:27,774 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 12:10:27,774 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 12:10:27,774 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 12:10:27,774 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 12:10:27,774 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 12:10:27,774 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 12:10:27,774 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 12:10:27,774 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 12:10:28,476 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/2) [2021-07-01 12:10:28,477 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 12:10:28,479 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:10:28 BasicIcfg [2021-07-01 12:10:28,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 12:10:28,480 INFO L168 Benchmark]: Toolchain (without parser) took 268328.31 ms. Allocated memory was 242.2 MB in the beginning and 6.6 GB in the end (delta: 6.3 GB). Free memory was 221.2 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 8.0 GB. [2021-07-01 12:10:28,480 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 242.2 MB. Free memory is still 222.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 12:10:28,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.81 ms. Allocated memory is still 242.2 MB. Free memory was 221.2 MB in the beginning and 219.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 12:10:28,480 INFO L168 Benchmark]: Boogie Preprocessor took 18.11 ms. Allocated memory is still 242.2 MB. Free memory was 219.3 MB in the beginning and 218.4 MB in the end (delta: 862.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 12:10:28,480 INFO L168 Benchmark]: RCFGBuilder took 266.15 ms. Allocated memory is still 242.2 MB. Free memory was 218.4 MB in the beginning and 205.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-01 12:10:28,480 INFO L168 Benchmark]: TraceAbstraction took 268006.03 ms. Allocated memory was 242.2 MB in the beginning and 6.6 GB in the end (delta: 6.3 GB). Free memory was 205.0 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 8.0 GB. [2021-07-01 12:10:28,481 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 0.16 ms. Allocated memory is still 242.2 MB. Free memory is still 222.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.81 ms. Allocated memory is still 242.2 MB. Free memory was 221.2 MB in the beginning and 219.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.11 ms. Allocated memory is still 242.2 MB. Free memory was 219.3 MB in the beginning and 218.4 MB in the end (delta: 862.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 266.15 ms. Allocated memory is still 242.2 MB. Free memory was 218.4 MB in the beginning and 205.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 268006.03 ms. Allocated memory was 242.2 MB in the beginning and 6.6 GB in the end (delta: 6.3 GB). Free memory was 205.0 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 32558991, positive: 23716434, positive conditional: 23716434, positive unconditional: 0, negative: 8842557, negative conditional: 8842557, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 29820321, positive: 23716434, positive conditional: 0, positive unconditional: 23716434, negative: 6103887, negative conditional: 0, negative unconditional: 6103887, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 510, positive: 411, positive conditional: 0, positive unconditional: 411, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 510, positive: 351, positive conditional: 0, positive unconditional: 351, negative: 159, negative conditional: 0, negative unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 159, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 416, positive: 198, positive conditional: 0, positive unconditional: 198, negative: 218, negative conditional: 0, negative unconditional: 218, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29820321, positive: 23716023, positive conditional: 0, positive unconditional: 23716023, negative: 6103788, negative conditional: 0, negative unconditional: 6103788, unknown: 510, unknown conditional: 0, unknown unconditional: 510] , Statistics on independence cache: Total cache size (in pairs): 510, Positive cache size: 411, Positive conditional cache size: 0, Positive unconditional cache size: 411, Negative cache size: 99, Negative conditional cache size: 0, Negative unconditional cache size: 99, Independence queries for same thread: 2738670 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 155635, positive: 118616, positive conditional: 118616, positive unconditional: 0, negative: 37019, negative conditional: 37019, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 140182, positive: 118616, positive conditional: 0, positive unconditional: 118616, negative: 21566, negative conditional: 0, negative unconditional: 21566, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 306, positive: 245, positive conditional: 0, positive unconditional: 245, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 306, positive: 210, positive conditional: 0, positive unconditional: 210, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 96, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 141, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 140182, positive: 118371, positive conditional: 0, positive unconditional: 118371, negative: 21505, negative conditional: 0, negative unconditional: 21505, unknown: 306, unknown conditional: 0, unknown unconditional: 306] , Statistics on independence cache: Total cache size (in pairs): 306, Positive cache size: 245, Positive conditional cache size: 0, Positive unconditional cache size: 245, Negative cache size: 61, Negative conditional cache size: 0, Negative unconditional cache size: 61, Independence queries for same thread: 15453 - PositiveResult [Line: 75]: 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 10 procedures, 57 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 267176.2ms, OverallIterations: 14, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.5ms, PartialOrderReductionTime: 105569.7ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 127, 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: TRACE_CHECK: 678.3ms SsaConstructionTime, 13618.8ms SatisfiabilityAnalysisTime, 144391.3ms InterpolantComputationTime, 9395 NumberOfCodeBlocks, 9395 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 9371 ConstructedInterpolants, 0 QuantifiedInterpolants, 60504 SizeOfPredicates, 2 NumberOfNonLiveVariables, 13651 ConjunctsInSsa, 10043 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 337508/778614 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 10 procedures, 57 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 710.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.2ms, PartialOrderReductionTime: 700.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred 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...