/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/popl20-more/sum-fun.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 13:28:59,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 13:28:59,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 13:28:59,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-10 13:28:59,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-10 13:28:59,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-10 13:28:59,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-10 13:28:59,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-10 13:28:59,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-10 13:28:59,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-10 13:28:59,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-10 13:28:59,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-10 13:28:59,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 13:28:59,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 13:28:59,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 13:28:59,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 13:28:59,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 13:28:59,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 13:28:59,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 13:28:59,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 13:28:59,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 13:28:59,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 13:28:59,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 13:28:59,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 13:28:59,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-10 13:28:59,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-10 13:28:59,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-10 13:28:59,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-10 13:28:59,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-10 13:28:59,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-10 13:28:59,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-10 13:28:59,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-10 13:28:59,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-10 13:28:59,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-10 13:28:59,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-10 13:28:59,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-10 13:28:59,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-10 13:28:59,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-10 13:28:59,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 13:28:59,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 13:28:59,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 13:28:59,265 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 [2021-07-10 13:28:59,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 13:28:59,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 13:28:59,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 13:28:59,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 13:28:59,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 13:28:59,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 13:28:59,304 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 13:28:59,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 13:28:59,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 13:28:59,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 13:28:59,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 13:28:59,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 13:28:59,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 13:28:59,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 13:28:59,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 13:28:59,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 13:28:59,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 13:28:59,306 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 13:28:59,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 13:28:59,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 13:28:59,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 13:28:59,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 13:28:59,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 13:28:59,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 13:28:59,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 13:28:59,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 13:28:59,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 13:28:59,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 13:28:59,327 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 13:28:59,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 13:28:59,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 13:28:59,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 13:28:59,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 13:28:59,328 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 13:28:59,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 13:28:59,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 13:28:59,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 13:28:59,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 13:28:59,688 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 13:28:59,690 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 13:28:59,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl [2021-07-10 13:28:59,691 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl' [2021-07-10 13:28:59,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 13:28:59,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 13:28:59,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 13:28:59,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 13:28:59,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 13:28:59,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 13:28:59,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 13:28:59,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 13:28:59,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 13:28:59,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... [2021-07-10 13:28:59,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 13:28:59,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 13:28:59,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 13:28:59,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 13:28:59,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 13:28:59,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 13:28:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 13:28:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 13:28:59,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 13:28:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 13:28:59,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 13:28:59,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 13:28:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 13:28:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 13:28:59,833 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 13:28:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 13:28:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 13:28:59,834 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 13:29:00,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 13:29:00,061 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 13:29:00,063 INFO L202 PluginConnector]: Adding new model sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 01:29:00 BoogieIcfgContainer [2021-07-10 13:29:00,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 13:29:00,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 13:29:00,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 13:29:00,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 13:29:00,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:28:59" (1/2) ... [2021-07-10 13:29:00,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735e9272 and model type sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 01:29:00, skipping insertion in model container [2021-07-10 13:29:00,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 01:29:00" (2/2) ... [2021-07-10 13:29:00,069 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-fun.wvr.bpl [2021-07-10 13:29:00,094 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 13:29:00,094 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 13:29:00,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 13:29:00,095 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 13:29:00,146 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 13:29:00,166 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 [2021-07-10 13:29:00,248 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 13:29:00,252 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 13:29:00,252 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 13:29:00,252 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 13:29:00,252 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 13:29:00,252 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 13:29:00,252 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 13:29:00,252 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 13:29:00,383 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:29:00,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:29:00,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1293232620, now seen corresponding path program 1 times [2021-07-10 13:29:00,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:29:00,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066623861] [2021-07-10 13:29:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:29:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 13:29:00,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:29:00,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066623861] [2021-07-10 13:29:00,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066623861] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:00,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859325297] [2021-07-10 13:29:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:29:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:00,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-10 13:29:00,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:29:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 13:29:01,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859325297] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:01,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:29:01,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 13:29:01,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232187807] [2021-07-10 13:29:01,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 13:29:01,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:29:01,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 13:29:01,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-10 13:29:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:01,029 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:29:01,031 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) [2021-07-10 13:29:01,031 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:29:01,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 13:29:01,503 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:29:01,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:29:01,503 INFO L82 PathProgramCache]: Analyzing trace with hash -503209112, now seen corresponding path program 2 times [2021-07-10 13:29:01,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:29:01,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272560083] [2021-07-10 13:29:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:29:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:29:01,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:29:01,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272560083] [2021-07-10 13:29:01,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272560083] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:01,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119101678] [2021-07-10 13:29:01,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:29:01,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 13:29:01,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:29:01,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 13:29:01,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:29:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:29:01,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119101678] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:01,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:29:01,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-07-10 13:29:01,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668316443] [2021-07-10 13:29:01,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 13:29:01,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:29:01,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 13:29:01,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-07-10 13:29:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:01,757 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:29:01,757 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) [2021-07-10 13:29:01,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:29:01,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:29:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:02,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:29:02,236 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:29:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:29:02,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1286560470, now seen corresponding path program 3 times [2021-07-10 13:29:02,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:29:02,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155054661] [2021-07-10 13:29:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:29:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:29:02,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:29:02,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155054661] [2021-07-10 13:29:02,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155054661] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:02,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111333908] [2021-07-10 13:29:02,339 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 [2021-07-10 13:29:02,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-10 13:29:02,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:29:02,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-10 13:29:02,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:29:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 13:29:02,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111333908] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:02,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:29:02,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-07-10 13:29:02,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090519299] [2021-07-10 13:29:02,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 13:29:02,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:29:02,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 13:29:02,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-07-10 13:29:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:02,623 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:29:02,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:29:02,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:29:02,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:02,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-10 13:29:03,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:29:03,396 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:29:03,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:29:03,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1488249820, now seen corresponding path program 4 times [2021-07-10 13:29:03,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:29:03,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914862298] [2021-07-10 13:29:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:29:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:29:03,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:29:03,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914862298] [2021-07-10 13:29:03,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914862298] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:03,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625709548] [2021-07-10 13:29:03,501 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 [2021-07-10 13:29:03,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 13:29:03,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:29:03,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 13:29:03,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:29:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:29:03,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625709548] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:03,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:29:03,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2021-07-10 13:29:03,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082209541] [2021-07-10 13:29:03,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-10 13:29:03,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:29:03,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-10 13:29:03,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-07-10 13:29:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:03,802 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:29:03,802 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) [2021-07-10 13:29:03,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:03,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:03,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-10 13:29:03,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:29:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:29:04,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:29:04,385 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:29:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:29:04,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2125861640, now seen corresponding path program 5 times [2021-07-10 13:29:04,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:29:04,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879892118] [2021-07-10 13:29:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:29:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:29:04,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:29:04,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879892118] [2021-07-10 13:29:04,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879892118] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:04,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252439993] [2021-07-10 13:29:04,535 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 [2021-07-10 13:29:04,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-10 13:29:04,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:29:04,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-10 13:29:04,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:29:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 20 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-10 13:29:04,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252439993] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:04,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:29:04,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 21 [2021-07-10 13:29:04,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191653390] [2021-07-10 13:29:04,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-10 13:29:04,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:29:04,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-10 13:29:04,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-07-10 13:29:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:04,813 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:29:04,813 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) [2021-07-10 13:29:04,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:04,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:04,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:29:04,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:29:04,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:29:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:29:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-10 13:29:05,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:29:05,738 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:29:05,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:29:05,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1174013490, now seen corresponding path program 6 times [2021-07-10 13:29:05,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:29:05,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299386370] [2021-07-10 13:29:05,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:29:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 178 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 13:29:06,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:29:06,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299386370] [2021-07-10 13:29:06,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299386370] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:06,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673958384] [2021-07-10 13:29:06,896 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 [2021-07-10 13:29:06,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-07-10 13:29:06,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:29:06,963 WARN L261 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 104 conjunts are in the unsatisfiable core [2021-07-10 13:29:06,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:29:08,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:29:08,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:29:08,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:29:08,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:29:08,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:29:08,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 55 disjoint index pairs (out of 105 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 32 [2021-07-10 13:29:08,934 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 13:29:08,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 13:29:08,944 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 13:29:08,944 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:101, output treesize:15 [2021-07-10 13:29:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 13:29:09,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673958384] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:09,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:29:09,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 31] total 54 [2021-07-10 13:29:09,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451874407] [2021-07-10 13:29:09,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-07-10 13:29:09,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:29:09,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-07-10 13:29:09,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2631, Unknown=0, NotChecked=0, Total=2862 [2021-07-10 13:29:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:09,039 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:29:09,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 54 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:29:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:29:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:29:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-07-10 13:29:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:12,429 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2021-07-10 13:29:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:29:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:29:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-10 13:29:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-10 13:29:14,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:29:14,741 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:29:14,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:29:14,741 INFO L82 PathProgramCache]: Analyzing trace with hash 80188800, now seen corresponding path program 7 times [2021-07-10 13:29:14,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:29:14,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028855787] [2021-07-10 13:29:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:29:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 60 proven. 165 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:29:14,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:29:14,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028855787] [2021-07-10 13:29:14,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028855787] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:14,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933201403] [2021-07-10 13:29:14,876 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 [2021-07-10 13:29:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:14,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-10 13:29:14,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:29:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 64 proven. 160 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-10 13:29:15,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933201403] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:15,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:29:15,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 29 [2021-07-10 13:29:15,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150360910] [2021-07-10 13:29:15,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-10 13:29:15,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:29:15,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-10 13:29:15,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-07-10 13:29:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:15,241 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:29:15,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:29:15,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:15,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:15,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:29:15,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:29:15,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-07-10 13:29:15,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 65 states. [2021-07-10 13:29:15,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:29:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:29:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:29:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:29:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:29:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-10 13:29:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-07-10 13:29:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-10 13:29:17,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-07-10 13:29:17,141 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:29:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:29:17,142 INFO L82 PathProgramCache]: Analyzing trace with hash -891246234, now seen corresponding path program 8 times [2021-07-10 13:29:17,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:29:17,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116214811] [2021-07-10 13:29:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:29:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:29:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 48 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-10 13:29:18,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:29:18,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116214811] [2021-07-10 13:29:18,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116214811] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:29:18,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418138214] [2021-07-10 13:29:18,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:29:18,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 13:29:18,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:29:18,608 WARN L261 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 146 conjunts are in the unsatisfiable core [2021-07-10 13:29:18,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:31:21,214 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-07-10 13:31:21,218 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-07-10 13:31:21,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:31:21,419 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:597) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:238) ... 46 more [2021-07-10 13:31:21,423 INFO L168 Benchmark]: Toolchain (without parser) took 141704.78 ms. Allocated memory was 204.5 MB in the beginning and 584.1 MB in the end (delta: 379.6 MB). Free memory was 184.4 MB in the beginning and 371.7 MB in the end (delta: -187.3 MB). Peak memory consumption was 192.0 MB. Max. memory is 8.0 GB. [2021-07-10 13:31:21,424 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 204.5 MB. Free memory is still 185.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-10 13:31:21,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.49 ms. Allocated memory is still 204.5 MB. Free memory was 184.3 MB in the beginning and 182.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-10 13:31:21,424 INFO L168 Benchmark]: Boogie Preprocessor took 17.94 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 182.0 MB in the end (delta: 931.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-10 13:31:21,424 INFO L168 Benchmark]: RCFGBuilder took 296.04 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 168.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-10 13:31:21,424 INFO L168 Benchmark]: TraceAbstraction took 141358.10 ms. Allocated memory was 204.5 MB in the beginning and 584.1 MB in the end (delta: 379.6 MB). Free memory was 168.4 MB in the beginning and 371.7 MB in the end (delta: -203.3 MB). Peak memory consumption was 176.2 MB. Max. memory is 8.0 GB. [2021-07-10 13:31:21,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 204.5 MB. Free memory is still 185.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.49 ms. Allocated memory is still 204.5 MB. Free memory was 184.3 MB in the beginning and 182.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.94 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 182.0 MB in the end (delta: 931.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 296.04 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 168.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 141358.10 ms. Allocated memory was 204.5 MB in the beginning and 584.1 MB in the end (delta: 379.6 MB). Free memory was 168.4 MB in the beginning and 371.7 MB in the end (delta: -203.3 MB). Peak memory consumption was 176.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...