/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-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-17 09:31:07,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-17 09:31:07,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-17 09:31:07,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-17 09:31:07,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-17 09:31:07,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-17 09:31:07,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-17 09:31:07,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-17 09:31:07,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-17 09:31:07,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-17 09:31:07,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-17 09:31:07,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-17 09:31:07,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-17 09:31:07,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-17 09:31:07,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-17 09:31:07,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-17 09:31:07,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-17 09:31:07,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-17 09:31:07,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-17 09:31:07,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-17 09:31:07,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-17 09:31:07,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-17 09:31:07,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-17 09:31:07,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-17 09:31:07,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-17 09:31:07,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-17 09:31:07,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-17 09:31:07,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-17 09:31:07,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-17 09:31:07,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-17 09:31:07,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-17 09:31:07,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-17 09:31:07,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-17 09:31:07,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-17 09:31:07,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-17 09:31:07,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-17 09:31:07,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-17 09:31:07,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-17 09:31:07,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-17 09:31:07,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-17 09:31:07,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-17 09:31:07,521 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-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-17 09:31:07,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-17 09:31:07,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-17 09:31:07,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-17 09:31:07,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-17 09:31:07,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-17 09:31:07,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-17 09:31:07,562 INFO L138 SettingsManager]: * Use SBE=true [2021-06-17 09:31:07,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-17 09:31:07,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-17 09:31:07,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-17 09:31:07,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-17 09:31:07,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-17 09:31:07,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-17 09:31:07,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-17 09:31:07,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-17 09:31:07,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-17 09:31:07,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-17 09:31:07,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-17 09:31:07,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-17 09:31:07,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-17 09:31:07,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-17 09:31:07,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-17 09:31:07,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-17 09:31:07,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 09:31:07,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-17 09:31:07,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-17 09:31:07,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-17 09:31:07,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-17 09:31:07,565 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-17 09:31:07,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-17 09:31:07,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-17 09:31:07,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-17 09:31:07,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-17 09:31:07,566 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-17 09:31:07,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-17 09:31:07,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-17 09:31:07,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-17 09:31:07,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-17 09:31:07,914 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-17 09:31:07,915 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-17 09:31:07,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl [2021-06-17 09:31:07,916 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl' [2021-06-17 09:31:07,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-17 09:31:07,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-17 09:31:07,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-17 09:31:07,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-17 09:31:07,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-17 09:31:07,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:07,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:07,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-17 09:31:07,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-17 09:31:07,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-17 09:31:07,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-17 09:31:07,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:07,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:07,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:07,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:07,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:08,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:08,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... [2021-06-17 09:31:08,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-17 09:31:08,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-17 09:31:08,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-17 09:31:08,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-17 09:31:08,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 09:31:08,090 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-17 09:31:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-17 09:31:08,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-17 09:31:08,090 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-17 09:31:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-17 09:31:08,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-17 09:31:08,091 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-17 09:31:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-17 09:31:08,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-17 09:31:08,093 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-17 09:31:08,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-17 09:31:08,281 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-17 09:31:08,283 INFO L202 PluginConnector]: Adding new model mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 09:31:08 BoogieIcfgContainer [2021-06-17 09:31:08,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-17 09:31:08,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-17 09:31:08,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-17 09:31:08,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-17 09:31:08,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 09:31:07" (1/2) ... [2021-06-17 09:31:08,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194baaa8 and model type mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 09:31:08, skipping insertion in model container [2021-06-17 09:31:08,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 09:31:08" (2/2) ... [2021-06-17 09:31:08,289 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.bpl [2021-06-17 09:31:08,310 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-17 09:31:08,310 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-17 09:31:08,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-17 09:31:08,311 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-17 09:31:08,358 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-17 09:31:08,376 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-06-17 09:31:08,445 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 09:31:08,445 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 09:31:08,445 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 09:31:08,445 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 09:31:08,445 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 09:31:08,445 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 09:31:08,445 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 09:31:08,446 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-17 09:31:08,508 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:08,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2035646144, now seen corresponding path program 1 times [2021-06-17 09:31:08,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:08,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170981278] [2021-06-17 09:31:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:08,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:08,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170981278] [2021-06-17 09:31:08,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170981278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:08,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385278790] [2021-06-17 09:31:08,968 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 [2021-06-17 09:31:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:09,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-17 09:31:09,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:09,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385278790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:09,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:09,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-17 09:31:09,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359514] [2021-06-17 09:31:09,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-17 09:31:09,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:09,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-17 09:31:09,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-17 09:31:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:09,440 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:09,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 09:31:09,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:09,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-17 09:31:09,885 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:09,886 INFO L82 PathProgramCache]: Analyzing trace with hash 545542264, now seen corresponding path program 2 times [2021-06-17 09:31:09,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:09,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180567916] [2021-06-17 09:31:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:10,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:10,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180567916] [2021-06-17 09:31:10,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180567916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:10,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601092784] [2021-06-17 09:31:10,066 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 [2021-06-17 09:31:10,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 09:31:10,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:10,112 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-17 09:31:10,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:10,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601092784] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:10,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:10,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-17 09:31:10,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516232003] [2021-06-17 09:31:10,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-17 09:31:10,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:10,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-17 09:31:10,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-06-17 09:31:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:10,606 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:10,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 09:31:10,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:10,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:11,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 09:31:11,181 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:11,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1913404496, now seen corresponding path program 3 times [2021-06-17 09:31:11,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:11,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074933910] [2021-06-17 09:31:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:11,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:11,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074933910] [2021-06-17 09:31:11,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074933910] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:11,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820340988] [2021-06-17 09:31:11,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-06-17 09:31:11,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-17 09:31:11,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:11,456 WARN L261 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-17 09:31:11,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:19,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820340988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:19,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:19,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-17 09:31:19,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583987579] [2021-06-17 09:31:19,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-17 09:31:19,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:19,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-17 09:31:19,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-06-17 09:31:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:19,128 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:19,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 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) [2021-06-17 09:31:19,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:19,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:19,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:19,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 09:31:19,704 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:19,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:19,705 INFO L82 PathProgramCache]: Analyzing trace with hash 59169512, now seen corresponding path program 4 times [2021-06-17 09:31:19,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:19,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848127439] [2021-06-17 09:31:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:19,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:19,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848127439] [2021-06-17 09:31:19,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848127439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:19,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759584384] [2021-06-17 09:31:19,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2021-06-17 09:31:19,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 09:31:19,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:19,998 WARN L261 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-17 09:31:20,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:20,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759584384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:20,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:20,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-06-17 09:31:20,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044779111] [2021-06-17 09:31:20,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-17 09:31:20,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:20,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-17 09:31:20,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2021-06-17 09:31:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:20,535 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:20,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 09:31:20,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:20,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:20,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:20,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:21,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 09:31:21,229 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1093954016, now seen corresponding path program 5 times [2021-06-17 09:31:21,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:21,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788271228] [2021-06-17 09:31:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:21,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:21,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788271228] [2021-06-17 09:31:21,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788271228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:21,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643889796] [2021-06-17 09:31:21,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2021-06-17 09:31:21,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-17 09:31:21,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:21,568 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 55 conjunts are in the unsatisfiable core [2021-06-17 09:31:21,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:23,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643889796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:23,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:23,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-06-17 09:31:23,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296387251] [2021-06-17 09:31:23,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-17 09:31:23,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:23,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-17 09:31:23,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-06-17 09:31:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:23,137 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:23,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 32 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 09:31:23,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:23,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:23,138 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:23,138 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:23,138 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:24,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 09:31:24,103 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:24,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2041580200, now seen corresponding path program 6 times [2021-06-17 09:31:24,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:24,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645731409] [2021-06-17 09:31:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:24,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:24,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645731409] [2021-06-17 09:31:24,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645731409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:24,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255541132] [2021-06-17 09:31:24,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2021-06-17 09:31:24,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-17 09:31:24,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:24,487 WARN L261 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 63 conjunts are in the unsatisfiable core [2021-06-17 09:31:24,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:27,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255541132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:27,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:27,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2021-06-17 09:31:27,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510264289] [2021-06-17 09:31:27,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-17 09:31:27,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:27,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-17 09:31:27,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2021-06-17 09:31:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:27,195 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:27,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 09:31:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:28,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 09:31:28,300 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash 698480784, now seen corresponding path program 7 times [2021-06-17 09:31:28,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:28,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854624267] [2021-06-17 09:31:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:28,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:28,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854624267] [2021-06-17 09:31:28,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854624267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:28,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777758011] [2021-06-17 09:31:28,718 INFO L93 rtionOrderModulation]: Changing assertion order to 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 [2021-06-17 09:31:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:28,783 WARN L261 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 71 conjunts are in the unsatisfiable core [2021-06-17 09:31:28,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:29,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777758011] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:29,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:29,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2021-06-17 09:31:29,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048132480] [2021-06-17 09:31:29,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-17 09:31:29,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:29,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-17 09:31:29,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1529, Unknown=0, NotChecked=0, Total=1640 [2021-06-17 09:31:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:29,483 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:29,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 40 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) [2021-06-17 09:31:29,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:29,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:29,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:29,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:29,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:29,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:29,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 09:31:30,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-17 09:31:30,773 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:30,773 INFO L82 PathProgramCache]: Analyzing trace with hash 21995464, now seen corresponding path program 8 times [2021-06-17 09:31:30,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:30,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697653033] [2021-06-17 09:31:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:31,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:31,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697653033] [2021-06-17 09:31:31,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697653033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:31,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973671212] [2021-06-17 09:31:31,195 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 [2021-06-17 09:31:31,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 09:31:31,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:31,235 WARN L261 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 79 conjunts are in the unsatisfiable core [2021-06-17 09:31:31,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:32,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973671212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:32,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:32,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2021-06-17 09:31:32,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982756208] [2021-06-17 09:31:32,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-06-17 09:31:32,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:32,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-06-17 09:31:32,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1859, Unknown=0, NotChecked=0, Total=1980 [2021-06-17 09:31:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:32,083 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:32,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 09:31:32,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:32,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:32,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:32,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:32,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:32,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:32,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 09:31:32,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 09:31:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-17 09:31:33,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 09:31:33,417 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1860627200, now seen corresponding path program 9 times [2021-06-17 09:31:33,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:33,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924784531] [2021-06-17 09:31:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:33,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:33,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924784531] [2021-06-17 09:31:33,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924784531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:33,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772218657] [2021-06-17 09:31:33,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-06-17 09:31:33,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-17 09:31:33,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:33,954 WARN L261 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 87 conjunts are in the unsatisfiable core [2021-06-17 09:31:33,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:35,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772218657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:35,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:35,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-06-17 09:31:35,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440362960] [2021-06-17 09:31:35,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-06-17 09:31:35,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:35,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-06-17 09:31:35,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2221, Unknown=0, NotChecked=0, Total=2352 [2021-06-17 09:31:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:35,016 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:35,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 48 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 09:31:35,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:35,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:35,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:35,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:35,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:35,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:35,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 09:31:35,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-17 09:31:35,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 09:31:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-17 09:31:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-17 09:31:36,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 09:31:36,312 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:36,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:36,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1559616056, now seen corresponding path program 10 times [2021-06-17 09:31:36,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:36,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668323444] [2021-06-17 09:31:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:36,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:36,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668323444] [2021-06-17 09:31:36,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668323444] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:36,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332688324] [2021-06-17 09:31:36,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2021-06-17 09:31:36,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 09:31:36,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:36,886 WARN L261 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 95 conjunts are in the unsatisfiable core [2021-06-17 09:31:36,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 09:31:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:38,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332688324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:38,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 09:31:38,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2021-06-17 09:31:38,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273689463] [2021-06-17 09:31:38,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-06-17 09:31:38,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 09:31:38,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-06-17 09:31:38,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2615, Unknown=0, NotChecked=0, Total=2756 [2021-06-17 09:31:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:38,136 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 09:31:38,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 52 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-17 09:31:38,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-17 09:31:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-17 09:31:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-17 09:31:39,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-17 09:31:39,789 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 09:31:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 09:31:39,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1089835664, now seen corresponding path program 11 times [2021-06-17 09:31:39,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 09:31:39,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561251840] [2021-06-17 09:31:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 09:31:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 09:31:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 09:31:40,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 09:31:40,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561251840] [2021-06-17 09:31:40,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561251840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 09:31:40,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224409822] [2021-06-17 09:31:40,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 09:31:40,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-17 09:31:40,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 09:31:40,456 WARN L261 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 103 conjunts are in the unsatisfiable core [2021-06-17 09:31:40,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown