/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-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 20:48:10,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 20:48:10,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 20:48:10,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 20:48:10,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 20:48:10,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 20:48:10,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 20:48:10,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 20:48:10,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 20:48:10,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 20:48:10,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 20:48:10,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 20:48:10,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 20:48:10,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 20:48:10,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 20:48:10,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 20:48:10,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 20:48:10,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 20:48:10,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 20:48:11,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 20:48:11,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 20:48:11,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 20:48:11,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 20:48:11,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 20:48:11,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 20:48:11,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 20:48:11,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 20:48:11,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 20:48:11,029 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-None-NoLbe.epf [2021-07-09 20:48:11,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 20:48:11,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 20:48:11,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 20:48:11,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 20:48:11,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 20:48:11,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 20:48:11,065 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 20:48:11,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 20:48:11,065 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 20:48:11,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 20:48:11,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 20:48:11,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 20:48:11,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 20:48:11,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 20:48:11,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 20:48:11,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 20:48:11,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 20:48:11,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 20:48:11,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 20:48:11,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 20:48:11,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 20:48:11,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 20:48:11,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 20:48:11,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 20:48:11,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 20:48:11,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 20:48:11,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 20:48:11,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 20:48:11,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 20:48:11,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 20:48:11,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-09 20:48:11,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 20:48:11,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 20:48:11,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 20:48:11,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 20:48:11,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 20:48:11,426 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 20:48:11,427 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 20:48:11,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2021-07-09 20:48:11,428 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2021-07-09 20:48:11,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 20:48:11,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 20:48:11,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 20:48:11,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 20:48:11,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 20:48:11,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 20:48:11,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 20:48:11,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 20:48:11,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 20:48:11,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/1) ... [2021-07-09 20:48:11,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 20:48:11,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 20:48:11,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 20:48:11,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 20:48:11,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (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 [2021-07-09 20:48:11,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 20:48:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 20:48:11,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 20:48:11,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 20:48:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 20:48:11,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 20:48:11,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 20:48:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 20:48:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 20:48:11,580 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 20:48:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 20:48:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 20:48:11,581 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 20:48:11,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 20:48:11,870 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 20:48:11,871 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 08:48:11 BoogieIcfgContainer [2021-07-09 20:48:11,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 20:48:11,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 20:48:11,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 20:48:11,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 20:48:11,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:48:11" (1/2) ... [2021-07-09 20:48:11,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1952baa5 and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 08:48:11, skipping insertion in model container [2021-07-09 20:48:11,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 08:48:11" (2/2) ... [2021-07-09 20:48:11,877 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2021-07-09 20:48:11,898 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 20:48:11,899 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 20:48:11,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 20:48:11,899 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 20:48:11,953 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 20:48:11,972 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 [2021-07-09 20:48:12,025 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 20:48:12,025 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 20:48:12,025 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 20:48:12,025 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 20:48:12,025 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 20:48:12,025 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 20:48:12,026 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 20:48:12,026 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 20:48:12,038 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2021-07-09 20:48:12,079 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 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) [2021-07-09 20:48:12,092 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:48:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:48:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1880798164, now seen corresponding path program 1 times [2021-07-09 20:48:12,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:48:12,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296184193] [2021-07-09 20:48:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:48:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:48:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-09 20:48:12,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:48:12,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296184193] [2021-07-09 20:48:12,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296184193] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 20:48:12,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 20:48:12,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 20:48:12,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664672580] [2021-07-09 20:48:12,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 20:48:12,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:48:12,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 20:48:12,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 20:48:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:12,308 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:48:12,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:48:12,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:12,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 20:48:12,347 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:48:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:48:12,348 INFO L82 PathProgramCache]: Analyzing trace with hash -764861424, now seen corresponding path program 2 times [2021-07-09 20:48:12,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:48:12,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509954615] [2021-07-09 20:48:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:48:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:48:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-09 20:48:12,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:48:12,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509954615] [2021-07-09 20:48:12,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509954615] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 20:48:12,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 20:48:12,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 20:48:12,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349515124] [2021-07-09 20:48:12,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 20:48:12,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:48:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 20:48:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 20:48:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:12,397 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:48:12,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:48:12,398 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:12,398 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:48:12,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 20:48:12,425 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:48:12,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:48:12,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1250046437, now seen corresponding path program 3 times [2021-07-09 20:48:12,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:48:12,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562274510] [2021-07-09 20:48:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:48:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:48:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:48:13,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:48:13,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562274510] [2021-07-09 20:48:13,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562274510] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:48:13,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429003738] [2021-07-09 20:48:13,199 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 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 [2021-07-09 20:48:13,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-09 20:48:13,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:48:13,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core [2021-07-09 20:48:13,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:48:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:48:14,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429003738] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:48:14,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:48:14,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-07-09 20:48:14,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587874799] [2021-07-09 20:48:14,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-07-09 20:48:14,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:48:14,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-07-09 20:48:14,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2021-07-09 20:48:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:14,382 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:48:14,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 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) [2021-07-09 20:48:14,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:14,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:48:14,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:48:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:48:14,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:48:14,980 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:48:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:48:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1155907095, now seen corresponding path program 4 times [2021-07-09 20:48:14,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:48:14,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391246614] [2021-07-09 20:48:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:48:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:48:16,117 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 24 [2021-07-09 20:48:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-09 20:48:16,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:48:16,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391246614] [2021-07-09 20:48:16,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391246614] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:48:16,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678328323] [2021-07-09 20:48:16,706 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 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 [2021-07-09 20:48:16,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 20:48:16,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:48:16,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-09 20:48:16,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:48:18,080 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-07-09 20:48:18,320 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-07-09 20:48:18,497 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-07-09 20:48:18,792 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-07-09 20:48:19,019 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-07-09 20:48:19,508 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2021-07-09 20:48:19,926 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2021-07-09 20:48:20,331 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-07-09 20:48:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:48:20,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678328323] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:48:20,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:48:20,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 39 [2021-07-09 20:48:20,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876659160] [2021-07-09 20:48:20,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-07-09 20:48:20,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:48:20,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-07-09 20:48:20,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1352, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 20:48:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:20,475 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:48:20,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.225) internal successors, (89), 39 states have internal predecessors, (89), 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) [2021-07-09 20:48:20,476 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:20,476 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:48:20,476 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:48:20,476 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:48:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:48:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:48:21,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-07-09 20:48:21,288 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:48:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:48:21,289 INFO L82 PathProgramCache]: Analyzing trace with hash 365949951, now seen corresponding path program 5 times [2021-07-09 20:48:21,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:48:21,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507229915] [2021-07-09 20:48:21,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:48:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:48:22,799 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 63 [2021-07-09 20:48:22,956 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 26 [2021-07-09 20:48:23,093 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 61 [2021-07-09 20:48:23,269 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2021-07-09 20:48:23,386 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 62 [2021-07-09 20:48:23,525 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2021-07-09 20:48:23,795 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2021-07-09 20:48:23,961 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2021-07-09 20:48:24,125 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 29 [2021-07-09 20:48:24,270 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2021-07-09 20:48:24,412 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2021-07-09 20:48:24,592 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2021-07-09 20:48:24,847 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 48 [2021-07-09 20:48:25,063 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 46 [2021-07-09 20:48:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 2 proven. 262 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-09 20:48:25,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:48:25,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507229915] [2021-07-09 20:48:25,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507229915] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:48:25,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766231227] [2021-07-09 20:48:25,419 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 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 [2021-07-09 20:48:25,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-07-09 20:48:25,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:48:25,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-09 20:48:25,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:48:26,967 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-07-09 20:48:27,207 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-07-09 20:48:27,481 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-07-09 20:48:28,070 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 119 [2021-07-09 20:48:28,444 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-07-09 20:48:28,804 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-07-09 20:48:29,260 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-07-09 20:48:30,065 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 138 [2021-07-09 20:48:30,700 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 132 [2021-07-09 20:48:31,200 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-07-09 20:48:31,835 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-07-09 20:48:32,303 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-07-09 20:48:32,779 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-07-09 20:48:33,822 WARN L205 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2021-07-09 20:48:34,585 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-07-09 20:48:34,912 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2021-07-09 20:48:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:48:35,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766231227] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:48:35,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:48:35,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 54 [2021-07-09 20:48:35,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943722878] [2021-07-09 20:48:35,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-07-09 20:48:35,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:48:35,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-07-09 20:48:35,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2708, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 20:48:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:35,003 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:48:35,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:48:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:48:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:48:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:48:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:48:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:48:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:48:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-09 20:48:37,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-07-09 20:48:37,977 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:48:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:48:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash 62244983, now seen corresponding path program 6 times [2021-07-09 20:48:37,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:48:37,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329623537] [2021-07-09 20:48:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:48:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:48:39,717 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2021-07-09 20:48:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 2 proven. 388 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-09 20:48:41,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:48:41,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329623537] [2021-07-09 20:48:41,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329623537] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:48:41,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329166018] [2021-07-09 20:48:41,127 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 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 [2021-07-09 20:48:41,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-07-09 20:48:41,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:48:41,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 43 conjunts are in the unsatisfiable core [2021-07-09 20:48:41,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:48:42,984 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-07-09 20:48:43,313 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-07-09 20:48:44,192 WARN L205 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 158 [2021-07-09 20:48:45,239 WARN L205 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 183 [2021-07-09 20:48:45,904 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-07-09 20:48:46,973 WARN L205 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 178 [2021-07-09 20:48:48,333 WARN L205 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 187 [2021-07-09 20:48:49,445 WARN L205 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 173 [2021-07-09 20:48:50,555 WARN L205 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 175 [2021-07-09 20:48:51,292 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-07-09 20:48:52,701 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 279 DAG size of output: 228 [2021-07-09 20:48:53,524 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-07-09 20:48:54,403 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-07-09 20:48:55,131 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2021-07-09 20:48:56,133 WARN L205 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2021-07-09 20:48:57,210 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2021-07-09 20:48:59,055 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 240 DAG size of output: 239 [2021-07-09 20:48:59,420 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-07-09 20:48:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:48:59,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329166018] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:48:59,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:48:59,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 38] total 65 [2021-07-09 20:48:59,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480553419] [2021-07-09 20:48:59,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-07-09 20:48:59,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:48:59,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-07-09 20:48:59,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=3801, Unknown=0, NotChecked=0, Total=4290 [2021-07-09 20:48:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:48:59,527 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:48:59,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 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) [2021-07-09 20:48:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:48:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:48:59,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:48:59,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:48:59,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-09 20:48:59,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:49:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:49:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:49:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:49:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:49:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-09 20:49:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-09 20:49:02,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:49:02,709 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:49:02,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:49:02,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1803151143, now seen corresponding path program 7 times [2021-07-09 20:49:02,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:49:02,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910684503] [2021-07-09 20:49:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:49:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:49:03,524 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 25 [2021-07-09 20:49:12,410 WARN L205 SmtUtils]: Spent 8.79 s on a formula simplification. DAG size of input: 133 DAG size of output: 28 [2021-07-09 20:49:20,901 WARN L205 SmtUtils]: Spent 8.45 s on a formula simplification. DAG size of input: 133 DAG size of output: 29 [2021-07-09 20:49:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 11 proven. 452 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-07-09 20:49:21,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:49:21,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910684503] [2021-07-09 20:49:21,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910684503] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:49:21,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116669380] [2021-07-09 20:49:21,247 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 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 [2021-07-09 20:49:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:49:21,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 46 conjunts are in the unsatisfiable core [2021-07-09 20:49:21,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:49:22,701 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-09 20:49:23,438 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-07-09 20:49:23,984 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2021-07-09 20:49:24,732 WARN L205 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 151 [2021-07-09 20:49:25,189 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-07-09 20:49:25,597 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-07-09 20:49:26,091 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2021-07-09 20:49:27,077 WARN L205 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 168 [2021-07-09 20:49:27,923 WARN L205 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 167 [2021-07-09 20:49:28,902 WARN L205 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 178 [2021-07-09 20:49:29,571 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2021-07-09 20:49:30,763 WARN L205 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2021-07-09 20:49:31,934 WARN L205 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2021-07-09 20:49:34,037 WARN L205 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 336 DAG size of output: 287 [2021-07-09 20:49:35,055 WARN L205 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2021-07-09 20:49:37,416 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 317 DAG size of output: 303 [2021-07-09 20:49:39,431 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 305 DAG size of output: 304 [2021-07-09 20:49:39,851 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 414 DAG size of output: 318 [2021-07-09 20:49:40,945 WARN L205 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2021-07-09 20:49:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 0 proven. 521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:49:41,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116669380] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:49:41,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:49:41,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 40] total 59 [2021-07-09 20:49:41,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914331983] [2021-07-09 20:49:41,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-07-09 20:49:41,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:49:41,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-07-09 20:49:41,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=3069, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 20:49:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:49:41,152 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:49:41,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.2666666666666666) internal successors, (136), 59 states have internal predecessors, (136), 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) [2021-07-09 20:49:41,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:49:41,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:49:41,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:49:41,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:49:41,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-09 20:49:41,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-09 20:49:41,153 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:49:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:49:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:49:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:49:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:49:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 20:49:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 20:49:44,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 20:49:44,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:49:44,732 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:49:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:49:44,732 INFO L82 PathProgramCache]: Analyzing trace with hash 529580274, now seen corresponding path program 8 times [2021-07-09 20:49:44,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:49:44,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353700116] [2021-07-09 20:49:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:49:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:49:46,958 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 42 [2021-07-09 20:49:47,319 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 42 [2021-07-09 20:49:47,726 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 42 [2021-07-09 20:49:48,049 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 36 [2021-07-09 20:49:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 23 proven. 1230 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-07-09 20:49:49,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:49:49,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353700116] [2021-07-09 20:49:49,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353700116] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:49:49,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502235919] [2021-07-09 20:49:49,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:49:49,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 20:49:49,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:49:49,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 68 conjunts are in the unsatisfiable core [2021-07-09 20:49:49,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:49:51,112 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2021-07-09 20:49:52,013 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-07-09 20:49:52,431 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-07-09 20:49:52,882 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-07-09 20:49:53,816 WARN L205 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 177 [2021-07-09 20:49:54,789 WARN L205 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2021-07-09 20:49:55,325 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-07-09 20:49:56,050 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2021-07-09 20:49:57,472 WARN L205 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 218 [2021-07-09 20:49:58,715 WARN L205 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 202 [2021-07-09 20:49:59,971 WARN L205 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 200 [2021-07-09 20:50:00,819 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-07-09 20:50:02,456 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 303 DAG size of output: 253 [2021-07-09 20:50:03,541 WARN L205 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2021-07-09 20:50:04,405 WARN L205 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2021-07-09 20:50:05,569 WARN L205 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2021-07-09 20:50:06,842 WARN L205 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2021-07-09 20:50:07,226 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 302 [2021-07-09 20:50:08,328 WARN L205 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2021-07-09 20:50:09,789 WARN L205 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2021-07-09 20:50:11,329 WARN L205 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2021-07-09 20:50:11,795 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 431 DAG size of output: 352 [2021-07-09 20:50:11,915 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 431 DAG size of output: 352 [2021-07-09 20:50:13,167 WARN L205 SmtUtils]: Spent 947.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-07-09 20:50:13,564 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 438 DAG size of output: 368 [2021-07-09 20:50:13,675 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 438 DAG size of output: 368 [2021-07-09 20:50:15,022 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 368 [2021-07-09 20:50:16,490 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 369 [2021-07-09 20:50:16,915 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 385 [2021-07-09 20:50:17,067 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 385 [2021-07-09 20:50:18,514 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 385 [2021-07-09 20:50:18,957 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 476 DAG size of output: 401 [2021-07-09 20:50:19,113 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 476 DAG size of output: 401 [2021-07-09 20:50:20,671 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 401 [2021-07-09 20:50:21,124 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 599 DAG size of output: 431 [2021-07-09 20:50:21,283 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 599 DAG size of output: 431 [2021-07-09 20:50:23,048 WARN L205 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 431 [2021-07-09 20:50:23,153 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 445 DAG size of output: 443 [2021-07-09 20:50:23,427 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 442 [2021-07-09 20:50:23,610 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 442 [2021-07-09 20:50:25,476 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 442 [2021-07-09 20:50:26,142 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 459 [2021-07-09 20:50:26,309 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 459 [2021-07-09 20:50:28,255 WARN L205 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 459 [2021-07-09 20:50:28,367 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 462 DAG size of output: 462 [2021-07-09 20:50:30,509 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 458 [2021-07-09 20:50:30,615 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 458 DAG size of output: 458 [2021-07-09 20:50:30,799 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 473 DAG size of output: 471 [2021-07-09 20:50:31,118 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 555 DAG size of output: 475 [2021-07-09 20:50:31,335 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 555 DAG size of output: 475 [2021-07-09 20:50:33,341 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 475 [2021-07-09 20:50:33,461 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 488 DAG size of output: 487 [2021-07-09 20:50:33,787 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 711 DAG size of output: 617 [2021-07-09 20:50:34,012 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 711 DAG size of output: 617 [2021-07-09 20:50:37,414 WARN L205 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 617 DAG size of output: 465 [2021-07-09 20:50:38,146 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 650 DAG size of output: 493 [2021-07-09 20:50:38,348 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 660 DAG size of output: 498 [2021-07-09 20:50:38,541 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 660 DAG size of output: 498 [2021-07-09 20:50:40,674 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 498 [2021-07-09 20:50:40,800 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 502 DAG size of output: 502 [2021-07-09 20:50:42,951 WARN L205 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 498 [2021-07-09 20:50:43,076 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 498 DAG size of output: 498 [2021-07-09 20:50:43,302 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 511 [2021-07-09 20:50:43,672 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 608 DAG size of output: 469 [2021-07-09 20:50:43,935 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 608 DAG size of output: 469 [2021-07-09 20:50:46,300 WARN L205 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 469 [2021-07-09 20:50:46,496 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 472 DAG size of output: 472 [2021-07-09 20:50:50,961 WARN L205 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 472 DAG size of output: 471 [2021-07-09 20:50:51,136 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 471 [2021-07-09 20:50:51,487 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 485 DAG size of output: 483 [2021-07-09 20:50:52,013 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 632 DAG size of output: 475 [2021-07-09 20:50:52,375 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 552 DAG size of output: 482 [2021-07-09 20:50:52,737 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 552 DAG size of output: 482 [2021-07-09 20:50:55,213 WARN L205 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 482 [2021-07-09 20:50:56,074 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 215 [2021-07-09 20:50:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 0 proven. 1382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:50:56,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502235919] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:50:56,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:50:56,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 59] total 86 [2021-07-09 20:50:56,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874103520] [2021-07-09 20:50:56,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-07-09 20:50:56,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:50:56,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-07-09 20:50:56,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=7039, Unknown=0, NotChecked=0, Total=7482 [2021-07-09 20:50:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:56,264 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:50:56,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.1954022988505746) internal successors, (191), 86 states have internal predecessors, (191), 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) [2021-07-09 20:50:56,264 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:50:56,264 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:50:56,264 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:50:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:50:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-07-09 20:50:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-07-09 20:50:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-07-09 20:50:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:50:59,531 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2021-07-09 20:51:00,015 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-07-09 20:51:00,541 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-07-09 20:51:01,052 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-09 20:51:01,625 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2021-07-09 20:51:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:51:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:51:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 20:51:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 20:51:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 20:51:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 20:51:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 20:51:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-09 20:51:07,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:51:07,625 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:51:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:51:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1527241309, now seen corresponding path program 9 times [2021-07-09 20:51:07,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:51:07,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892188436] [2021-07-09 20:51:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:51:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:51:43,593 WARN L205 SmtUtils]: Spent 33.81 s on a formula simplification. DAG size of input: 64 DAG size of output: 24 [2021-07-09 20:53:36,258 WARN L205 SmtUtils]: Spent 1.88 m on a formula simplification. DAG size of input: 76 DAG size of output: 30 [2021-07-09 20:57:54,264 WARN L205 SmtUtils]: Spent 4.30 m on a formula simplification. DAG size of input: 92 DAG size of output: 30 [2021-07-09 21:02:24,610 WARN L205 SmtUtils]: Spent 4.51 m on a formula simplification. DAG size of input: 99 DAG size of output: 30 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown