/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-NewStatesSleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 11:40:40,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 11:40:40,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 11:40:40,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 11:40:40,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 11:40:40,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 11:40:40,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 11:40:40,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 11:40:40,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 11:40:40,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 11:40:40,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 11:40:40,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 11:40:40,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 11:40:40,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 11:40:40,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 11:40:40,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 11:40:40,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 11:40:40,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 11:40:40,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 11:40:40,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 11:40:40,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 11:40:40,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 11:40:40,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 11:40:40,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 11:40:40,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-01 11:40:40,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-01 11:40:40,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-01 11:40:40,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-01 11:40:40,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-01 11:40:40,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-01 11:40:40,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-01 11:40:40,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-01 11:40:40,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-01 11:40:40,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-01 11:40:40,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-01 11:40:40,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-01 11:40:40,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-01 11:40:40,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-01 11:40:40,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 11:40:40,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 11:40:40,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 11:40:40,522 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-NewStatesSleep-NoLbe-Random521.epf [2021-07-01 11:40:40,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 11:40:40,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 11:40:40,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 11:40:40,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 11:40:40,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 11:40:40,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 11:40:40,561 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 11:40:40,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 11:40:40,561 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 11:40:40,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 11:40:40,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 11:40:40,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 11:40:40,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 11:40:40,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 11:40:40,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 11:40:40,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 11:40:40,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 11:40:40,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 11:40:40,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 11:40:40,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 11:40:40,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 11:40:40,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 11:40:40,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 11:40:40,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 11:40:40,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 11:40:40,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 11:40:40,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 11:40:40,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 11:40:40,565 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-01 11:40:40,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 11:40:40,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 11:40:40,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 11:40:40,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 11:40:40,566 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-01 11:40:40,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-01 11:40:40,567 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 11:40:40,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 11:40:40,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 11:40:40,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 11:40:40,914 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 11:40:40,916 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 11:40:40,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl [2021-07-01 11:40:40,917 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl' [2021-07-01 11:40:40,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 11:40:40,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 11:40:40,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 11:40:40,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 11:40:40,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 11:40:40,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 11:40:40,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 11:40:40,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 11:40:40,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 11:40:40,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/1) ... [2021-07-01 11:40:40,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 11:40:41,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 11:40:41,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 11:40:41,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 11:40:41,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (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 11:40:41,079 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 11:40:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 11:40:41,079 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 11:40:41,079 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 11:40:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 11:40:41,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 11:40:41,080 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 11:40:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 11:40:41,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 11:40:41,081 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 11:40:41,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 11:40:41,360 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-01 11:40:41,361 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 11:40:41,363 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:40:41 BoogieIcfgContainer [2021-07-01 11:40:41,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 11:40:41,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 11:40:41,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 11:40:41,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 11:40:41,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:40" (1/2) ... [2021-07-01 11:40:41,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2d4a3e and model type bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:40:41, skipping insertion in model container [2021-07-01 11:40:41,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:40:41" (2/2) ... [2021-07-01 11:40:41,370 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert08.bpl [2021-07-01 11:40:41,391 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 11:40:41,391 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 11:40:41,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 11:40:41,392 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 11:40:41,470 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 11:40:41,496 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 11:40:41,557 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 11:40:41,557 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 11:40:41,557 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 11:40:41,558 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 11:40:41,558 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 11:40:41,558 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 11:40:41,558 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 11:40:41,558 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0======== [2021-07-01 11:40:41,742 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:40:41,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:40:41,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1152474649, now seen corresponding path program 1 times [2021-07-01 11:40:41,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:40:41,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962684638] [2021-07-01 11:40:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:40:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 11:40:41,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:40:41,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962684638] [2021-07-01 11:40:41,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962684638] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 11:40:41,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 11:40:41,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 11:40:41,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323006161] [2021-07-01 11:40:41,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 11:40:41,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:40:41,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 11:40:41,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 11:40:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:41,887 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:40:41,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 11:40:41,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:41,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 11:40:41,923 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:40:41,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:40:41,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1149662763, now seen corresponding path program 1 times [2021-07-01 11:40:41,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:40:41,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003197806] [2021-07-01 11:40:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:40:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:42,007 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 11:40:42,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:40:42,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003197806] [2021-07-01 11:40:42,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003197806] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 11:40:42,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 11:40:42,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 11:40:42,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465528305] [2021-07-01 11:40:42,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 11:40:42,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:40:42,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 11:40:42,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-01 11:40:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:42,011 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:40:42,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 11:40:42,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:42,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:42,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 11:40:42,781 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:40:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:40:42,782 INFO L82 PathProgramCache]: Analyzing trace with hash 839342244, now seen corresponding path program 1 times [2021-07-01 11:40:42,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:40:42,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965028810] [2021-07-01 11:40:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:40:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-01 11:40:42,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:40:42,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965028810] [2021-07-01 11:40:42,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965028810] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:40:42,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068965494] [2021-07-01 11:40:42,881 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 11:40:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:42,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 21 conjunts are in the unsatisfiable core [2021-07-01 11:40:42,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:40:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-01 11:40:43,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068965494] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:40:43,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:40:43,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-01 11:40:43,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554699532] [2021-07-01 11:40:43,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 11:40:43,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:40:43,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 11:40:43,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 11:40:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:43,179 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:40:43,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 11:40:43,179 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:43,179 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:43,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:43,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:43,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:40:43,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 11:40:43,873 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:40:43,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:40:43,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1847385597, now seen corresponding path program 1 times [2021-07-01 11:40:43,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:40:43,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875910270] [2021-07-01 11:40:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:40:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-01 11:40:44,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:40:44,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875910270] [2021-07-01 11:40:44,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875910270] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:40:44,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547133290] [2021-07-01 11:40:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:40:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:44,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 37 conjunts are in the unsatisfiable core [2021-07-01 11:40:44,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:40:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-01 11:40:44,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547133290] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:40:44,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:40:44,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-01 11:40:44,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436711489] [2021-07-01 11:40:44,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 11:40:44,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:40:44,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 11:40:44,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-01 11:40:44,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:44,200 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:40:44,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 11:40:44,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:44,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:44,205 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:40:44,205 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:40:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:44,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 11:40:44,769 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:40:44,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:40:44,770 INFO L82 PathProgramCache]: Analyzing trace with hash 2003571994, now seen corresponding path program 1 times [2021-07-01 11:40:44,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:40:44,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058593179] [2021-07-01 11:40:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:40:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-01 11:40:44,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:40:44,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058593179] [2021-07-01 11:40:44,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058593179] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 11:40:44,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 11:40:44,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-01 11:40:44,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006628304] [2021-07-01 11:40:44,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 11:40:44,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:40:44,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 11:40:44,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-01 11:40:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:44,883 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:40:44,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 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 11:40:44,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:44,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:44,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:40:44,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:44,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:40:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:45,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-01 11:40:45,180 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:40:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:40:45,180 INFO L82 PathProgramCache]: Analyzing trace with hash 159918858, now seen corresponding path program 1 times [2021-07-01 11:40:45,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:40:45,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449593025] [2021-07-01 11:40:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:40:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-01 11:40:45,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:40:45,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449593025] [2021-07-01 11:40:45,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449593025] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:40:45,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068099009] [2021-07-01 11:40:45,343 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 11:40:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:40:45,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2021-07-01 11:40:45,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:40:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-01 11:40:45,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068099009] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:40:45,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:40:45,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-07-01 11:40:45,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441730631] [2021-07-01 11:40:45,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-01 11:40:45,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:40:45,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-01 11:40:45,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-07-01 11:40:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:40:45,568 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:40:45,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 11:40:45,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:40:45,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:45,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:40:45,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:45,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:40:45,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:42:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:42:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:42:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:42:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:42:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:42:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 11:42:03,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 11:42:03,817 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:42:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:42:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash -643909044, now seen corresponding path program 1 times [2021-07-01 11:42:03,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:42:03,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076493825] [2021-07-01 11:42:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:42:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:42:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-01 11:42:03,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:42:03,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076493825] [2021-07-01 11:42:03,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076493825] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:42:03,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012522428] [2021-07-01 11:42:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:42:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:42:03,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2021-07-01 11:42:04,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:42:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-01 11:42:04,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012522428] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:42:04,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:42:04,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-07-01 11:42:04,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53259857] [2021-07-01 11:42:04,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-01 11:42:04,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:42:04,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-01 11:42:04,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-07-01 11:42:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:42:04,145 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:42:04,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 11:42:04,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:42:04,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:42:04,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:42:04,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:42:04,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:42:04,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 11:42:04,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.