/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-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/mts-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 23:45:40,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 23:45:40,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 23:45:40,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 23:45:40,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 23:45:40,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 23:45:40,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 23:45:40,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 23:45:40,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 23:45:40,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 23:45:40,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 23:45:40,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 23:45:40,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 23:45:40,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 23:45:40,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 23:45:40,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 23:45:40,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 23:45:40,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 23:45:40,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 23:45:40,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 23:45:40,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 23:45:40,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 23:45:40,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 23:45:40,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 23:45:40,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 23:45:40,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 23:45:40,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 23:45:40,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 23:45:40,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 23:45:40,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 23:45:40,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 23:45:40,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 23:45:40,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 23:45:40,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 23:45:40,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 23:45:40,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 23:45:40,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 23:45:40,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 23:45:40,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 23:45:40,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 23:45:40,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 23:45:40,254 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-Lockstep.epf [2021-06-13 23:45:40,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 23:45:40,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 23:45:40,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-13 23:45:40,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-13 23:45:40,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 23:45:40,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 23:45:40,273 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 23:45:40,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 23:45:40,273 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 23:45:40,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 23:45:40,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 23:45:40,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 23:45:40,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 23:45:40,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 23:45:40,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 23:45:40,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 23:45:40,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 23:45:40,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 23:45:40,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 23:45:40,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 23:45:40,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 23:45:40,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 23:45:40,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 23:45:40,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 23:45:40,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 23:45:40,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 23:45:40,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 23:45:40,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 23:45:40,276 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-13 23:45:40,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 23:45:40,276 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 23:45:40,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-13 23:45:40,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-13 23:45:40,276 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-13 23:45:40,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 23:45:40,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 23:45:40,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 23:45:40,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 23:45:40,524 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 23:45:40,524 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 23:45:40,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/mts-array.wvr.bpl [2021-06-13 23:45:40,527 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/mts-array.wvr.bpl' [2021-06-13 23:45:40,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 23:45:40,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 23:45:40,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 23:45:40,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 23:45:40,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 23:45:40,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 23:45:40,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 23:45:40,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 23:45:40,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 23:45:40,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/1) ... [2021-06-13 23:45:40,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 23:45:40,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 23:45:40,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 23:45:40,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 23:45:40,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (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 [2021-06-13 23:45:40,670 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 23:45:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 23:45:40,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 23:45:40,670 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 23:45:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 23:45:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 23:45:40,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 23:45:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 23:45:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 23:45:40,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 23:45:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 23:45:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 23:45:40,672 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 23:45:40,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 23:45:40,847 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 23:45:40,849 INFO L202 PluginConnector]: Adding new model mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 11:45:40 BoogieIcfgContainer [2021-06-13 23:45:40,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 23:45:40,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 23:45:40,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 23:45:40,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 23:45:40,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:45:40" (1/2) ... [2021-06-13 23:45:40,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66acf45 and model type mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 11:45:40, skipping insertion in model container [2021-06-13 23:45:40,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mts-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 11:45:40" (2/2) ... [2021-06-13 23:45:40,854 INFO L111 eAbstractionObserver]: Analyzing ICFG mts-array.wvr.bpl [2021-06-13 23:45:40,874 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-13 23:45:40,874 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 23:45:40,874 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 23:45:40,875 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 23:45:40,929 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 23:45:40,944 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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 [2021-06-13 23:45:40,978 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 23:45:40,978 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 23:45:40,978 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 23:45:40,978 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 23:45:40,978 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 23:45:40,979 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 23:45:40,979 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 23:45:40,979 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 23:45:41,014 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:45:41,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:45:41,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1285995449, now seen corresponding path program 1 times [2021-06-13 23:45:41,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:45:41,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046430774] [2021-06-13 23:45:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:45:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:45:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-13 23:45:41,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:45:41,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046430774] [2021-06-13 23:45:41,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046430774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:41,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748317774] [2021-06-13 23:45:41,245 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 [2021-06-13 23:45:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:45:41,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-13 23:45:41,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:45:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-13 23:45:41,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748317774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:41,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:45:41,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-13 23:45:41,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845785435] [2021-06-13 23:45:41,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 23:45:41,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:45:41,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 23:45:41,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-13 23:45:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:41,518 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:45:41,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 23:45:41,519 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 23:45:41,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-13 23:45:41,917 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:45:41,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:45:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash -510446283, now seen corresponding path program 2 times [2021-06-13 23:45:41,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:45:41,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630125586] [2021-06-13 23:45:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:45:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:45:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-13 23:45:42,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:45:42,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630125586] [2021-06-13 23:45:42,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630125586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:42,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946329707] [2021-06-13 23:45:42,002 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 [2021-06-13 23:45:42,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 23:45:42,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:45:42,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-13 23:45:42,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:45:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-13 23:45:42,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946329707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:42,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:45:42,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-13 23:45:42,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629164825] [2021-06-13 23:45:42,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-13 23:45:42,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:45:42,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-13 23:45:42,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-13 23:45:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:42,164 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:45:42,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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) [2021-06-13 23:45:42,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 23:45:42,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 23:45:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:45:42,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:45:42,588 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:45:42,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:45:42,589 INFO L82 PathProgramCache]: Analyzing trace with hash 575412003, now seen corresponding path program 3 times [2021-06-13 23:45:42,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:45:42,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304037949] [2021-06-13 23:45:42,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:45:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:45:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-13 23:45:42,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:45:42,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304037949] [2021-06-13 23:45:42,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304037949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:42,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084960128] [2021-06-13 23:45:42,816 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 [2021-06-13 23:45:42,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-13 23:45:42,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:45:42,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-13 23:45:42,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:45:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-13 23:45:43,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084960128] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:43,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:45:43,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-13 23:45:43,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557601053] [2021-06-13 23:45:43,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-13 23:45:43,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:45:43,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-13 23:45:43,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-13 23:45:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:43,061 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:45:43,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 23:45:43,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 23:45:43,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:45:43,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:45:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:45:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-13 23:45:43,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:45:43,648 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:45:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:45:43,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1430009129, now seen corresponding path program 4 times [2021-06-13 23:45:43,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:45:43,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864616091] [2021-06-13 23:45:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:45:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:45:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-13 23:45:43,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:45:43,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864616091] [2021-06-13 23:45:43,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864616091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:43,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345371517] [2021-06-13 23:45:43,750 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 [2021-06-13 23:45:43,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-13 23:45:43,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:45:43,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-13 23:45:43,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:45:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-13 23:45:43,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345371517] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:43,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:45:43,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2021-06-13 23:45:43,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488969155] [2021-06-13 23:45:43,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-13 23:45:43,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:45:43,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-13 23:45:43,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-06-13 23:45:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:43,989 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:45:43,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 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) [2021-06-13 23:45:43,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:45:43,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:45:43,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-13 23:45:43,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:45:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:45:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-13 23:45:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-13 23:45:44,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:45:44,515 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:45:44,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:45:44,516 INFO L82 PathProgramCache]: Analyzing trace with hash -279522491, now seen corresponding path program 5 times [2021-06-13 23:45:44,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:45:44,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130757382] [2021-06-13 23:45:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:45:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:45:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-13 23:45:44,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:45:44,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130757382] [2021-06-13 23:45:44,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130757382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:44,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333346234] [2021-06-13 23:45:44,611 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 [2021-06-13 23:45:44,659 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-13 23:45:44,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:45:44,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-13 23:45:44,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:45:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 20 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-13 23:45:44,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333346234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:45:44,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:45:44,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 21 [2021-06-13 23:45:44,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751499501] [2021-06-13 23:45:44,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-13 23:45:44,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:45:44,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-13 23:45:44,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-06-13 23:45:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:44,861 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:45:44,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 23:45:44,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:45:44,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:45:44,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-06-13 23:45:44,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-13 23:45:44,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:45:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:45:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:45:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-13 23:45:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-13 23:45:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-13 23:45:45,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:45:45,713 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:45:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:45:45,713 INFO L82 PathProgramCache]: Analyzing trace with hash 63033947, now seen corresponding path program 6 times [2021-06-13 23:45:45,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:45:45,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280704181] [2021-06-13 23:45:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:45:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:45:49,312 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 99 [2021-06-13 23:45:49,745 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 198 [2021-06-13 23:45:50,078 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 52 [2021-06-13 23:45:50,437 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 194 [2021-06-13 23:45:50,713 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 60 [2021-06-13 23:45:51,086 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 216 [2021-06-13 23:45:58,671 WARN L205 SmtUtils]: Spent 7.53 s on a formula simplification. DAG size of input: 425 DAG size of output: 474 [2021-06-13 23:45:59,746 WARN L205 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 61 [2021-06-13 23:46:07,421 WARN L205 SmtUtils]: Spent 7.67 s on a formula simplification. DAG size of input: 475 DAG size of output: 414 [2021-06-13 23:46:08,371 WARN L205 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 413 DAG size of output: 49 [2021-06-13 23:46:17,057 WARN L205 SmtUtils]: Spent 8.68 s on a formula simplification. DAG size of input: 479 DAG size of output: 406 [2021-06-13 23:46:17,806 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 406 DAG size of output: 85 [2021-06-13 23:46:32,705 WARN L205 SmtUtils]: Spent 14.89 s on a formula simplification. DAG size of input: 472 DAG size of output: 481 [2021-06-13 23:46:33,760 WARN L205 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 479 DAG size of output: 65 [2021-06-13 23:50:35,811 WARN L205 SmtUtils]: Spent 4.03 m on a formula simplification. DAG size of input: 518 DAG size of output: 1080 [2021-06-13 23:50:39,437 WARN L205 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 1080 DAG size of output: 1080 [2021-06-13 23:50:43,073 WARN L205 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 1061 DAG size of output: 92 [2021-06-13 23:53:59,616 WARN L205 SmtUtils]: Spent 3.28 m on a formula simplification. DAG size of input: 495 DAG size of output: 925 [2021-06-13 23:54:00,131 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 925 [2021-06-13 23:54:03,020 WARN L205 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 919 DAG size of output: 78 [2021-06-13 23:54:20,666 WARN L205 SmtUtils]: Spent 17.64 s on a formula simplification. DAG size of input: 559 DAG size of output: 415 [2021-06-13 23:54:21,870 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 409 DAG size of output: 91 [2021-06-13 23:54:37,690 WARN L205 SmtUtils]: Spent 15.81 s on a formula simplification. DAG size of input: 535 DAG size of output: 377 [2021-06-13 23:54:38,077 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 377 [2021-06-13 23:54:38,978 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 112 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown