/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-inc.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 11:29:31,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 11:29:31,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 11:29:31,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-10 11:29:31,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-10 11:29:31,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-10 11:29:31,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-10 11:29:31,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-10 11:29:31,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-10 11:29:31,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-10 11:29:31,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-10 11:29:31,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-07-10 11:29:31,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 11:29:31,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 11:29:31,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 11:29:31,929 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.epf [2021-07-10 11:29:31,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 11:29:31,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 11:29:31,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 11:29:31,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 11:29:31,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 11:29:31,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 11:29:31,961 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 11:29:31,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 11:29:31,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 11:29:31,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 11:29:31,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 11:29:31,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 11:29:31,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 11:29:31,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 11:29:31,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 11:29:31,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 11:29:31,965 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 11:29:31,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 11:29:32,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 11:29:32,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 11:29:32,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 11:29:32,213 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 11:29:32,214 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 11:29:32,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-inc.wvr.bpl [2021-07-10 11:29:32,215 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-inc.wvr.bpl' [2021-07-10 11:29:32,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 11:29:32,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 11:29:32,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 11:29:32,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 11:29:32,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 11:29:32,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 11:29:32,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 11:29:32,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 11:29:32,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 11:29:32,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/1) ... [2021-07-10 11:29:32,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 11:29:32,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 11:29:32,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 11:29:32,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 11:29:32,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (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 11:29:32,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 11:29:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 11:29:32,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 11:29:32,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 11:29:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 11:29:32,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 11:29:32,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 11:29:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 11:29:32,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 11:29:32,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 11:29:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 11:29:32,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 11:29:32,329 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-10 11:29:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-10 11:29:32,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-10 11:29:32,330 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 11:29:32,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 11:29:32,544 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 11:29:32,545 INFO L202 PluginConnector]: Adding new model min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 11:29:32 BoogieIcfgContainer [2021-07-10 11:29:32,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 11:29:32,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 11:29:32,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 11:29:32,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 11:29:32,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 11:29:32" (1/2) ... [2021-07-10 11:29:32,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fbde2f and model type min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 11:29:32, skipping insertion in model container [2021-07-10 11:29:32,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-inc.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 11:29:32" (2/2) ... [2021-07-10 11:29:32,550 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-inc.wvr.bpl [2021-07-10 11:29:32,553 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 11:29:32,553 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 11:29:32,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 11:29:32,554 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 11:29:32,617 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-10 11:29:32,650 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 11:29:32,693 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 11:29:32,693 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 11:29:32,693 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 11:29:32,693 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 11:29:32,694 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 11:29:32,694 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 11:29:32,694 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 11:29:32,694 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 11:29:32,893 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:32,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1438409888, now seen corresponding path program 1 times [2021-07-10 11:29:32,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:32,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357617085] [2021-07-10 11:29:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 11:29:33,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:33,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357617085] [2021-07-10 11:29:33,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357617085] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:33,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143965081] [2021-07-10 11:29:33,204 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 11:29:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:33,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-10 11:29:33,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:33,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 14 [2021-07-10 11:29:33,450 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:33,457 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:33,459 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 11:29:33,459 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:21 [2021-07-10 11:29:33,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-10 11:29:33,569 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:33,571 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:33,572 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 11:29:33,572 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:5 [2021-07-10 11:29:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 11:29:33,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143965081] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:33,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:33,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-07-10 11:29:33,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050550446] [2021-07-10 11:29:33,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-10 11:29:33,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-10 11:29:33,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-07-10 11:29:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:33,638 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:33,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 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 11:29:33,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:33,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:33,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 11:29:33,973 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:33,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:33,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1245597502, now seen corresponding path program 2 times [2021-07-10 11:29:33,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:33,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325750908] [2021-07-10 11:29:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 11:29:34,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:34,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325750908] [2021-07-10 11:29:34,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325750908] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:34,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643071985] [2021-07-10 11:29:34,027 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 11:29:34,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 11:29:34,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:34,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-10 11:29:34,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 11:29:34,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643071985] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:34,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:34,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-07-10 11:29:34,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345536304] [2021-07-10 11:29:34,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 11:29:34,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:34,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 11:29:34,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-10 11:29:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:34,122 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:34,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 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 11:29:34,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:34,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:34,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:34,463 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:34,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:34,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2050303934, now seen corresponding path program 3 times [2021-07-10 11:29:34,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:34,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211953569] [2021-07-10 11:29:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-07-10 11:29:34,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:34,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211953569] [2021-07-10 11:29:34,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211953569] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:34,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124289814] [2021-07-10 11:29:34,530 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 11:29:34,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-10 11:29:34,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:34,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-10 11:29:34,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-07-10 11:29:34,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124289814] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:34,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:34,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-07-10 11:29:34,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41039043] [2021-07-10 11:29:34,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 11:29:34,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:34,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 11:29:34,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-10 11:29:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:34,655 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:34,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 11:29:34,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:34,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:34,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:34,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:34,945 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1238599746, now seen corresponding path program 4 times [2021-07-10 11:29:34,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:34,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673608897] [2021-07-10 11:29:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 11:29:35,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:35,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673608897] [2021-07-10 11:29:35,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673608897] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:35,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031568145] [2021-07-10 11:29:35,003 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 11:29:35,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 11:29:35,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:35,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 11:29:35,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 11:29:35,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031568145] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:35,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:35,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-07-10 11:29:35,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388240485] [2021-07-10 11:29:35,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 11:29:35,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:35,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 11:29:35,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-07-10 11:29:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:35,122 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:35,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 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 11:29:35,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:35,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:35,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:35,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:35,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:35,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:35,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:35,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:35,433 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:35,433 INFO L82 PathProgramCache]: Analyzing trace with hash 929828278, now seen corresponding path program 5 times [2021-07-10 11:29:35,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:35,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272162656] [2021-07-10 11:29:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 11:29:35,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:35,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272162656] [2021-07-10 11:29:35,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272162656] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:35,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343332216] [2021-07-10 11:29:35,518 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 11:29:35,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-07-10 11:29:35,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:35,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-10 11:29:35,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 11:29:35,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343332216] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:35,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:35,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-07-10 11:29:35,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793273908] [2021-07-10 11:29:35,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-10 11:29:35,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:35,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-10 11:29:35,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-07-10 11:29:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:35,699 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:35,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 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 11:29:35,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:35,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:35,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:35,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:35,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:36,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:36,435 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:36,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:36,435 INFO L82 PathProgramCache]: Analyzing trace with hash -245408574, now seen corresponding path program 6 times [2021-07-10 11:29:36,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:36,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153781290] [2021-07-10 11:29:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 50 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 11:29:36,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:36,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153781290] [2021-07-10 11:29:36,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153781290] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:36,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471463309] [2021-07-10 11:29:36,513 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 11:29:36,559 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-10 11:29:36,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:36,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-10 11:29:36,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 45 proven. 35 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-07-10 11:29:36,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471463309] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:36,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:36,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2021-07-10 11:29:36,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590234124] [2021-07-10 11:29:36,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 11:29:36,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:36,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 11:29:36,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-07-10 11:29:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:36,715 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:36,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 18 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) [2021-07-10 11:29:36,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:36,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:36,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:36,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:36,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:36,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-10 11:29:37,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:37,421 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:37,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1181284662, now seen corresponding path program 7 times [2021-07-10 11:29:37,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:37,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946943353] [2021-07-10 11:29:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 34 proven. 41 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-10 11:29:37,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:37,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946943353] [2021-07-10 11:29:37,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946943353] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:37,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612393663] [2021-07-10 11:29:37,509 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 11:29:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:37,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-10 11:29:37,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 41 proven. 34 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-10 11:29:37,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612393663] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:37,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:37,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2021-07-10 11:29:37,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656290381] [2021-07-10 11:29:37,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 11:29:37,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 11:29:37,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-07-10 11:29:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:37,667 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:37,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 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 11:29:37,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:37,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:37,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:37,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:37,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:37,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-07-10 11:29:37,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:38,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-07-10 11:29:38,068 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:38,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2012610758, now seen corresponding path program 8 times [2021-07-10 11:29:38,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:38,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596551313] [2021-07-10 11:29:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 72 proven. 101 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 11:29:38,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:38,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596551313] [2021-07-10 11:29:38,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596551313] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:38,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252739820] [2021-07-10 11:29:38,211 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 11:29:38,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 11:29:38,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:38,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-10 11:29:38,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 110 proven. 25 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-07-10 11:29:38,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252739820] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:38,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:38,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 29 [2021-07-10 11:29:38,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051561611] [2021-07-10 11:29:38,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-07-10 11:29:38,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:38,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-07-10 11:29:38,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-07-10 11:29:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:38,474 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:38,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.6333333333333333) internal successors, (109), 29 states have internal predecessors, (109), 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 11:29:38,474 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:38,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:38,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:38,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:38,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:38,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:38,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:38,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:38,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:38,849 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:38,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:38,849 INFO L82 PathProgramCache]: Analyzing trace with hash 196016924, now seen corresponding path program 9 times [2021-07-10 11:29:38,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:38,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363143199] [2021-07-10 11:29:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 39 proven. 102 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-07-10 11:29:38,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:38,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363143199] [2021-07-10 11:29:38,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363143199] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:38,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114328311] [2021-07-10 11:29:38,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:38,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-07-10 11:29:38,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:38,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 36 conjunts are in the unsatisfiable core [2021-07-10 11:29:38,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:39,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,173 INFO L354 Elim1Store]: treesize reduction 32, result has 59.5 percent of original size [2021-07-10 11:29:39,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 60 [2021-07-10 11:29:39,182 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:39,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,224 INFO L354 Elim1Store]: treesize reduction 32, result has 59.5 percent of original size [2021-07-10 11:29:39,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 60 [2021-07-10 11:29:39,242 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:39,372 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-07-10 11:29:39,373 INFO L628 ElimStorePlain]: treesize reduction 116, result has 48.7 percent of original size [2021-07-10 11:29:39,389 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 11:29:39,390 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:85 [2021-07-10 11:29:39,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,479 INFO L354 Elim1Store]: treesize reduction 32, result has 59.5 percent of original size [2021-07-10 11:29:39,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 60 [2021-07-10 11:29:39,490 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:39,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,528 INFO L354 Elim1Store]: treesize reduction 32, result has 59.5 percent of original size [2021-07-10 11:29:39,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 60 [2021-07-10 11:29:39,542 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:39,621 INFO L628 ElimStorePlain]: treesize reduction 77, result has 62.3 percent of original size [2021-07-10 11:29:39,635 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2021-07-10 11:29:39,635 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:127 [2021-07-10 11:29:39,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:39,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,051 INFO L354 Elim1Store]: treesize reduction 44, result has 59.3 percent of original size [2021-07-10 11:29:40,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 80 [2021-07-10 11:29:40,117 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:40,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,201 INFO L354 Elim1Store]: treesize reduction 44, result has 59.3 percent of original size [2021-07-10 11:29:40,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 80 [2021-07-10 11:29:40,221 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:40,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,321 INFO L354 Elim1Store]: treesize reduction 44, result has 59.3 percent of original size [2021-07-10 11:29:40,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 80 [2021-07-10 11:29:40,329 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:40,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:40,416 INFO L354 Elim1Store]: treesize reduction 44, result has 59.3 percent of original size [2021-07-10 11:29:40,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 80 [2021-07-10 11:29:40,433 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:41,363 WARN L205 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 151 [2021-07-10 11:29:41,363 INFO L628 ElimStorePlain]: treesize reduction 318, result has 61.8 percent of original size [2021-07-10 11:29:41,426 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-07-10 11:29:41,426 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:187, output treesize:405 [2021-07-10 11:29:41,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,704 INFO L354 Elim1Store]: treesize reduction 44, result has 59.3 percent of original size [2021-07-10 11:29:41,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 80 [2021-07-10 11:29:41,730 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:41,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,816 INFO L354 Elim1Store]: treesize reduction 44, result has 59.3 percent of original size [2021-07-10 11:29:41,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 80 [2021-07-10 11:29:41,830 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:41,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,920 INFO L354 Elim1Store]: treesize reduction 44, result has 59.3 percent of original size [2021-07-10 11:29:41,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 80 [2021-07-10 11:29:41,937 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:41,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:41,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,021 INFO L354 Elim1Store]: treesize reduction 44, result has 59.3 percent of original size [2021-07-10 11:29:42,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 80 [2021-07-10 11:29:42,043 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:42,512 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 148 [2021-07-10 11:29:42,513 INFO L628 ElimStorePlain]: treesize reduction 207, result has 71.1 percent of original size [2021-07-10 11:29:42,563 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-07-10 11:29:42,563 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:187, output treesize:377 [2021-07-10 11:29:42,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,790 INFO L354 Elim1Store]: treesize reduction 50, result has 60.3 percent of original size [2021-07-10 11:29:42,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 94 [2021-07-10 11:29:42,804 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:42,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,881 INFO L354 Elim1Store]: treesize reduction 50, result has 60.3 percent of original size [2021-07-10 11:29:42,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 94 [2021-07-10 11:29:42,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:42,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:42,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:43,007 INFO L354 Elim1Store]: treesize reduction 50, result has 60.3 percent of original size [2021-07-10 11:29:43,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 94 [2021-07-10 11:29:43,017 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:43,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:43,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:43,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:43,113 INFO L354 Elim1Store]: treesize reduction 50, result has 60.3 percent of original size [2021-07-10 11:29:43,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 94 [2021-07-10 11:29:43,122 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:43,774 WARN L205 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 146 [2021-07-10 11:29:43,774 INFO L628 ElimStorePlain]: treesize reduction 240, result has 67.2 percent of original size [2021-07-10 11:29:43,811 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-07-10 11:29:43,811 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:183, output treesize:492 [2021-07-10 11:29:45,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:45,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 51 [2021-07-10 11:29:45,076 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-07-10 11:29:45,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,106 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-07-10 11:29:45,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 22 [2021-07-10 11:29:45,108 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:45,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,146 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:45,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 49 [2021-07-10 11:29:45,161 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-07-10 11:29:45,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:45,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 47 [2021-07-10 11:29:45,207 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:45,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 49 [2021-07-10 11:29:45,266 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 3 xjuncts. [2021-07-10 11:29:45,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,303 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:45,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 47 [2021-07-10 11:29:45,329 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:45,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,364 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:45,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 47 [2021-07-10 11:29:45,383 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:45,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,429 INFO L354 Elim1Store]: treesize reduction 23, result has 34.3 percent of original size [2021-07-10 11:29:45,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 26 [2021-07-10 11:29:45,431 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:45,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,460 INFO L354 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2021-07-10 11:29:45,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-07-10 11:29:45,461 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:45,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,494 INFO L354 Elim1Store]: treesize reduction 23, result has 34.3 percent of original size [2021-07-10 11:29:45,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 26 [2021-07-10 11:29:45,496 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:45,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,535 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-07-10 11:29:45,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 26 [2021-07-10 11:29:45,537 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:45,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,572 INFO L354 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2021-07-10 11:29:45,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 20 [2021-07-10 11:29:45,574 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:45,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,599 INFO L354 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2021-07-10 11:29:45,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-07-10 11:29:45,600 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:45,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,624 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-07-10 11:29:45,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-07-10 11:29:45,625 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:45,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,658 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 11:29:45,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 47 [2021-07-10 11:29:45,671 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2021-07-10 11:29:45,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 11:29:45,690 INFO L354 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2021-07-10 11:29:45,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 1 [2021-07-10 11:29:45,691 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-07-10 11:29:46,030 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 122 [2021-07-10 11:29:46,031 INFO L628 ElimStorePlain]: treesize reduction 100, result has 77.6 percent of original size [2021-07-10 11:29:46,116 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 33 xjuncts. [2021-07-10 11:29:46,117 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 5 variables, input treesize:739, output treesize:1133 [2021-07-10 11:29:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-07-10 11:29:46,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114328311] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:46,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:46,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 27 [2021-07-10 11:29:46,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794064577] [2021-07-10 11:29:46,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-10 11:29:46,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:46,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-10 11:29:46,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2021-07-10 11:29:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:46,481 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:46,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 27 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 11:29:46,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:46,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:46,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:46,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:46,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:46,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:46,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:46,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:46,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:47,427 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2021-07-10 11:29:47,832 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-07-10 11:29:48,161 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-07-10 11:29:48,562 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2021-07-10 11:29:48,958 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-07-10 11:29:49,333 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-07-10 11:29:49,508 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-07-10 11:29:49,763 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-07-10 11:29:50,331 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-07-10 11:29:51,713 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-07-10 11:29:52,158 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-07-10 11:29:52,553 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-07-10 11:29:53,127 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2021-07-10 11:29:53,535 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2021-07-10 11:29:53,955 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-07-10 11:29:54,568 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 194 [2021-07-10 11:29:55,044 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 190 [2021-07-10 11:29:55,359 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2021-07-10 11:29:55,870 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2021-07-10 11:29:56,720 WARN L205 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 192 [2021-07-10 11:29:57,528 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 178 [2021-07-10 11:29:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-10 11:29:57,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:57,894 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:57,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1295884316, now seen corresponding path program 10 times [2021-07-10 11:29:57,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:57,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121961619] [2021-07-10 11:29:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 54 proven. 119 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-07-10 11:29:57,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:57,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121961619] [2021-07-10 11:29:57,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121961619] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:57,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874470496] [2021-07-10 11:29:57,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:58,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 11:29:58,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:58,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 11:29:58,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 126 proven. 62 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-10 11:29:58,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874470496] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:58,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:58,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2021-07-10 11:29:58,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558346455] [2021-07-10 11:29:58,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-10 11:29:58,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-10 11:29:58,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-10 11:29:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:58,245 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:58,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 23 states have internal predecessors, (108), 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 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-07-10 11:29:58,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-10 11:29:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-10 11:29:58,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable442 [2021-07-10 11:29:58,815 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:29:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:29:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash -180704642, now seen corresponding path program 11 times [2021-07-10 11:29:58,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:29:58,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990978315] [2021-07-10 11:29:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:29:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:29:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 106 proven. 109 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-07-10 11:29:58,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:29:58,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990978315] [2021-07-10 11:29:58,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990978315] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:58,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165505158] [2021-07-10 11:29:58,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:29:59,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-07-10 11:29:59,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:29:59,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 21 conjunts are in the unsatisfiable core [2021-07-10 11:29:59,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:29:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-07-10 11:29:59,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165505158] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:29:59,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:29:59,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2021-07-10 11:29:59,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666679247] [2021-07-10 11:29:59,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-10 11:29:59,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:29:59,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-10 11:29:59,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-10 11:29:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:59,232 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:29:59,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 23 states have internal predecessors, (112), 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 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-10 11:29:59,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-10 11:29:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-10 11:29:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-10 11:30:00,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable443 [2021-07-10 11:30:00,176 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:30:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:30:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1608799460, now seen corresponding path program 12 times [2021-07-10 11:30:00,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:30:00,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194692876] [2021-07-10 11:30:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:30:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:30:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 82 proven. 159 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-07-10 11:30:00,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 11:30:00,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194692876] [2021-07-10 11:30:00,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194692876] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:30:00,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300666879] [2021-07-10 11:30:00,339 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 11:30:00,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-07-10 11:30:00,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 11:30:00,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjunts are in the unsatisfiable core [2021-07-10 11:30:00,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 11:30:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 120 proven. 134 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-07-10 11:30:00,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300666879] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 11:30:00,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 11:30:00,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 31 [2021-07-10 11:30:00,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572701614] [2021-07-10 11:30:00,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-07-10 11:30:00,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 11:30:00,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-07-10 11:30:00,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2021-07-10 11:30:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:30:00,704 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 11:30:00,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 3.90625) internal successors, (125), 31 states have internal predecessors, (125), 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 11:30:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:30:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2021-07-10 11:30:00,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 11:30:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 11:30:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:30:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 11:30:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 11:30:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 11:30:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-10 11:30:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 11:30:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 11:30:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-10 11:30:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-10 11:30:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-10 11:30:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-10 11:30:01,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable444 [2021-07-10 11:30:01,409 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 11:30:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 11:30:01,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1772172158, now seen corresponding path program 13 times [2021-07-10 11:30:01,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 11:30:01,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993499284] [2021-07-10 11:30:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 11:30:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 11:30:06,328 WARN L205 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 108 DAG size of output: 24 [2021-07-10 11:41:57,406 WARN L205 SmtUtils]: Spent 11.85 m on a formula simplification. DAG size of input: 139 DAG size of output: 12 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown