/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-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 12:02:20,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 12:02:20,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 12:02:20,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 12:02:20,861 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-Persistent-NoLbe.epf [2021-06-14 12:02:20,889 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 12:02:20,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 12:02:20,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 12:02:20,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 12:02:20,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 12:02:20,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 12:02:20,893 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 12:02:20,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 12:02:20,893 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 12:02:20,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 12:02:20,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 12:02:20,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 12:02:20,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 12:02:20,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 12:02:20,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 12:02:20,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 12:02:20,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 12:02:20,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 12:02:20,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 12:02:20,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 12:02:20,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 12:02:20,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 12:02:20,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 12:02:20,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 12:02:20,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 12:02:20,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 12:02:20,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 12:02:20,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 12:02:20,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 12:02:20,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 12:02:20,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 12:02:20,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 12:02:20,896 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-06-14 12:02:20,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 12:02:21,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 12:02:21,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 12:02:21,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 12:02:21,181 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 12:02:21,181 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 12:02:21,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl [2021-06-14 12:02:21,182 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl' [2021-06-14 12:02:21,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 12:02:21,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 12:02:21,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 12:02:21,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 12:02:21,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 12:02:21,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 12:02:21,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 12:02:21,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 12:02:21,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 12:02:21,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... [2021-06-14 12:02:21,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 12:02:21,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 12:02:21,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 12:02:21,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 12:02:21,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 12:02:21,304 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 12:02:21,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 12:02:21,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 12:02:21,304 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 12:02:21,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 12:02:21,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 12:02:21,304 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 12:02:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 12:02:21,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 12:02:21,305 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 12:02:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 12:02:21,305 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 12:02:21,305 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 12:02:21,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 12:02:21,506 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 12:02:21,507 INFO L202 PluginConnector]: Adding new model parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:02:21 BoogieIcfgContainer [2021-06-14 12:02:21,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 12:02:21,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 12:02:21,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 12:02:21,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 12:02:21,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 12:02:21" (1/2) ... [2021-06-14 12:02:21,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211bba2a and model type parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:02:21, skipping insertion in model container [2021-06-14 12:02:21,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:02:21" (2/2) ... [2021-06-14 12:02:21,513 INFO L111 eAbstractionObserver]: Analyzing ICFG parray-copy.wvr.bpl [2021-06-14 12:02:21,532 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 12:02:21,532 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 12:02:21,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 12:02:21,533 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 12:02:21,557 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-14 12:02:21,572 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-14 12:02:21,612 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 12:02:21,613 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 12:02:21,613 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 12:02:21,613 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 12:02:21,613 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 12:02:21,613 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 12:02:21,613 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 12:02:21,613 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 12:02:21,728 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:21,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:21,732 INFO L82 PathProgramCache]: Analyzing trace with hash -731584810, now seen corresponding path program 1 times [2021-06-14 12:02:21,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:21,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785750549] [2021-06-14 12:02:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-14 12:02:21,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:21,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785750549] [2021-06-14 12:02:21,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785750549] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 12:02:21,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 12:02:21,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-14 12:02:21,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862725122] [2021-06-14 12:02:21,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-14 12:02:21,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:21,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-14 12:02:21,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-14 12:02:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:21,906 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:21,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:21,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:21,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-14 12:02:21,981 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:21,984 INFO L82 PathProgramCache]: Analyzing trace with hash -441769874, now seen corresponding path program 1 times [2021-06-14 12:02:21,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:21,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906463449] [2021-06-14 12:02:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:22,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:22,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906463449] [2021-06-14 12:02:22,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906463449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:22,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903931903] [2021-06-14 12:02:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:22,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-14 12:02:22,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:22,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-06-14 12:02:22,607 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:22,616 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:22,622 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:22,623 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:20 [2021-06-14 12:02:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:22,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903931903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:22,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:22,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-06-14 12:02:22,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373393543] [2021-06-14 12:02:22,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-14 12:02:22,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:22,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-14 12:02:22,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-06-14 12:02:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:22,665 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:22,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 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) [2021-06-14 12:02:22,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:22,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:23,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:23,132 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:23,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:23,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2132944726, now seen corresponding path program 2 times [2021-06-14 12:02:23,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:23,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355149938] [2021-06-14 12:02:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:23,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:23,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355149938] [2021-06-14 12:02:23,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355149938] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:23,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531835993] [2021-06-14 12:02:23,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:23,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 12:02:23,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:23,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-14 12:02:23,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-14 12:02:23,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531835993] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:23,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:23,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-06-14 12:02:23,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374606812] [2021-06-14 12:02:23,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-14 12:02:23,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:23,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-14 12:02:23,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-14 12:02:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:23,799 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:23,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:23,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:23,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:23,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:24,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:24,153 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:24,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:24,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1758417308, now seen corresponding path program 3 times [2021-06-14 12:02:24,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:24,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431618119] [2021-06-14 12:02:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:24,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:24,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431618119] [2021-06-14 12:02:24,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431618119] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:24,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92302879] [2021-06-14 12:02:24,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:24,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-14 12:02:24,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:24,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-14 12:02:24,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:24,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-06-14 12:02:24,993 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:24,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:25,003 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:25,003 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:22 [2021-06-14 12:02:25,072 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-06-14 12:02:25,072 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 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-14 12:02:25,075 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:25,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:25,089 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:25,089 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:34 [2021-06-14 12:02:25,193 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-06-14 12:02:25,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-06-14 12:02:25,195 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:25,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:25,214 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:25,215 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:46 [2021-06-14 12:02:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-06-14 12:02:25,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92302879] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:25,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:25,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 26 [2021-06-14 12:02:25,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126291807] [2021-06-14 12:02:25,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-14 12:02:25,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:25,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-14 12:02:25,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-06-14 12:02:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:25,394 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:25,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:25,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:25,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:25,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:25,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 12:02:26,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:26,384 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:26,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1688379062, now seen corresponding path program 4 times [2021-06-14 12:02:26,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:26,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188899126] [2021-06-14 12:02:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 36 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:26,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:26,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188899126] [2021-06-14 12:02:26,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188899126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:26,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905586981] [2021-06-14 12:02:26,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:26,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 12:02:26,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:26,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-14 12:02:26,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-14 12:02:26,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905586981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:26,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:26,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-06-14 12:02:26,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006603008] [2021-06-14 12:02:26,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-14 12:02:26,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:26,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-14 12:02:26,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-06-14 12:02:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:26,675 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:26,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:26,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:26,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:26,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:26,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-14 12:02:26,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:27,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:27,116 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:27,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1845720764, now seen corresponding path program 5 times [2021-06-14 12:02:27,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:27,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546748888] [2021-06-14 12:02:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:27,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:27,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546748888] [2021-06-14 12:02:27,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546748888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:27,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975008243] [2021-06-14 12:02:27,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:27,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-14 12:02:27,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:27,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-14 12:02:27,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:27,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975008243] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:27,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:27,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-06-14 12:02:27,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049145473] [2021-06-14 12:02:27,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-14 12:02:27,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:27,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-14 12:02:27,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2021-06-14 12:02:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:27,576 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:27,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:27,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:27,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:27,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:27,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:27,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:27,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:28,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:28,009 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:28,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:28,009 INFO L82 PathProgramCache]: Analyzing trace with hash 182917112, now seen corresponding path program 6 times [2021-06-14 12:02:28,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:28,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424531676] [2021-06-14 12:02:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:28,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:28,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424531676] [2021-06-14 12:02:28,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424531676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:28,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047418495] [2021-06-14 12:02:28,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:28,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-14 12:02:28,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:28,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-14 12:02:28,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:28,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047418495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:28,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:28,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 27 [2021-06-14 12:02:28,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350168959] [2021-06-14 12:02:28,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-14 12:02:28,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:28,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-14 12:02:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2021-06-14 12:02:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:28,486 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:28,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:28,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:28,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:28,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:28,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:28,981 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:28,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:28,981 INFO L82 PathProgramCache]: Analyzing trace with hash -685021556, now seen corresponding path program 7 times [2021-06-14 12:02:28,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:28,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850207147] [2021-06-14 12:02:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:29,988 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2021-06-14 12:02:30,118 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2021-06-14 12:02:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:30,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:30,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850207147] [2021-06-14 12:02:30,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850207147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:30,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179027057] [2021-06-14 12:02:30,864 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:30,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-14 12:02:30,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:31,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-06-14 12:02:31,389 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:31,396 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,396 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:24 [2021-06-14 12:02:31,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-06-14 12:02:31,433 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:31,441 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,442 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:35 [2021-06-14 12:02:31,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-06-14 12:02:31,497 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,506 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:31,507 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,507 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:46 [2021-06-14 12:02:31,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-06-14 12:02:31,562 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:31,574 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,574 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:57 [2021-06-14 12:02:31,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2021-06-14 12:02:31,634 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,646 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:31,648 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,648 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:68 [2021-06-14 12:02:31,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 82 [2021-06-14 12:02:31,710 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,723 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:31,726 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,727 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:80, output treesize:79 [2021-06-14 12:02:31,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:31,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 92 [2021-06-14 12:02:31,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:31,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:31,834 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:31,834 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:87, output treesize:86 [2021-06-14 12:02:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:31,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179027057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:31,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:31,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 44 [2021-06-14 12:02:31,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122602123] [2021-06-14 12:02:31,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-06-14 12:02:31,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:31,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-06-14 12:02:31,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-06-14 12:02:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:31,961 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:31,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.066666666666667) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:31,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:31,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:31,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:31,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:31,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:31,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:31,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:31,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:33,626 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2021-06-14 12:02:34,081 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-06-14 12:02:34,227 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-06-14 12:02:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-14 12:02:35,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-06-14 12:02:35,009 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1441855344, now seen corresponding path program 8 times [2021-06-14 12:02:35,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:35,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115763738] [2021-06-14 12:02:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:35,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:35,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115763738] [2021-06-14 12:02:35,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115763738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:35,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872893064] [2021-06-14 12:02:35,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:35,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 12:02:35,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:35,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-14 12:02:35,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:35,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872893064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:35,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:35,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 33 [2021-06-14 12:02:35,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626868304] [2021-06-14 12:02:35,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-14 12:02:35,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:35,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-14 12:02:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=843, Unknown=0, NotChecked=0, Total=1056 [2021-06-14 12:02:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:35,552 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:35,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-14 12:02:35,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-14 12:02:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-14 12:02:36,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:36,118 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1225818876, now seen corresponding path program 9 times [2021-06-14 12:02:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:36,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945683688] [2021-06-14 12:02:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:36,840 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-06-14 12:02:37,300 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2021-06-14 12:02:37,449 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-14 12:02:37,582 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-06-14 12:02:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 36 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:38,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:38,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945683688] [2021-06-14 12:02:38,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945683688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:38,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064806920] [2021-06-14 12:02:38,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:38,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-14 12:02:38,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:38,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 49 conjunts are in the unsatisfiable core [2021-06-14 12:02:38,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:39,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-06-14 12:02:39,011 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:39,020 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,020 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2021-06-14 12:02:39,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-06-14 12:02:39,066 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,077 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:39,078 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,078 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:38 [2021-06-14 12:02:39,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-06-14 12:02:39,131 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,143 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:39,144 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,144 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:49 [2021-06-14 12:02:39,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-06-14 12:02:39,206 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,219 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:39,220 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,220 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:60 [2021-06-14 12:02:39,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2021-06-14 12:02:39,289 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,303 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:39,305 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:39,305 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:67 [2021-06-14 12:02:39,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,422 INFO L354 Elim1Store]: treesize reduction 134, result has 20.2 percent of original size [2021-06-14 12:02:39,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 78 [2021-06-14 12:02:39,432 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,447 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:39,458 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:39,458 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:79, output treesize:78 [2021-06-14 12:02:39,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,600 INFO L354 Elim1Store]: treesize reduction 220, result has 15.7 percent of original size [2021-06-14 12:02:39,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 75 treesize of output 92 [2021-06-14 12:02:39,603 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,619 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:39,621 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:39,621 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:90, output treesize:89 [2021-06-14 12:02:39,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,795 INFO L354 Elim1Store]: treesize reduction 318, result has 13.1 percent of original size [2021-06-14 12:02:39,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 86 treesize of output 106 [2021-06-14 12:02:39,799 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:39,819 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:39,821 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:39,822 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:101, output treesize:100 [2021-06-14 12:02:39,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:39,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:40,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:40,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:40,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:40,073 INFO L354 Elim1Store]: treesize reduction 278, result has 10.9 percent of original size [2021-06-14 12:02:40,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 93 treesize of output 116 [2021-06-14 12:02:40,075 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:40,102 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:40,105 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:40,106 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:116, output treesize:115 [2021-06-14 12:02:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 13 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:40,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064806920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:40,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:40,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2021-06-14 12:02:40,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304776583] [2021-06-14 12:02:40,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-06-14 12:02:40,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-06-14 12:02:40,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-06-14 12:02:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:40,381 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:40,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 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) [2021-06-14 12:02:40,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:40,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:40,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:40,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:40,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:40,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:40,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:40,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-14 12:02:40,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-14 12:02:40,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:42,492 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2021-06-14 12:02:42,784 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-06-14 12:02:43,100 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2021-06-14 12:02:43,399 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-14 12:02:43,632 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2021-06-14 12:02:43,817 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2021-06-14 12:02:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-14 12:02:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-14 12:02:44,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:44,692 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:44,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1591517464, now seen corresponding path program 10 times [2021-06-14 12:02:44,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:44,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33496501] [2021-06-14 12:02:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:44,926 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 81 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:44,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:44,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33496501] [2021-06-14 12:02:44,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33496501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:44,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760513312] [2021-06-14 12:02:44,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:44,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 12:02:44,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:44,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-14 12:02:44,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:45,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760513312] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:45,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 12:02:45,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 39 [2021-06-14 12:02:45,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714846717] [2021-06-14 12:02:45,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-14 12:02:45,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 12:02:45,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-14 12:02:45,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1181, Unknown=0, NotChecked=0, Total=1482 [2021-06-14 12:02:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:45,332 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 12:02:45,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 39 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-06-14 12:02:45,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-14 12:02:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-14 12:02:45,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-14 12:02:45,905 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 12:02:45,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 12:02:45,905 INFO L82 PathProgramCache]: Analyzing trace with hash 532126588, now seen corresponding path program 11 times [2021-06-14 12:02:45,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 12:02:45,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122586204] [2021-06-14 12:02:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 12:02:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 12:02:47,145 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2021-06-14 12:02:47,329 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2021-06-14 12:02:47,671 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-06-14 12:02:47,830 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-06-14 12:02:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 64 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 12:02:48,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 12:02:48,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122586204] [2021-06-14 12:02:48,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122586204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 12:02:48,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153976839] [2021-06-14 12:02:48,787 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:02:48,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-14 12:02:48,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 12:02:48,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-14 12:02:48,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 12:02:49,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-06-14 12:02:49,046 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:49,052 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:49,052 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 12:02:49,052 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:24 [2021-06-14 12:02:49,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:49,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-06-14 12:02:49,120 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:49,128 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:49,129 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:49,129 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:36 [2021-06-14 12:02:49,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:49,204 INFO L354 Elim1Store]: treesize reduction 38, result has 25.5 percent of original size [2021-06-14 12:02:49,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 32 [2021-06-14 12:02:49,206 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:49,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:49,220 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:49,221 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:48 [2021-06-14 12:02:49,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:49,325 INFO L354 Elim1Store]: treesize reduction 72, result has 20.0 percent of original size [2021-06-14 12:02:49,326 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 5 case distinctions, treesize of input 34 treesize of output 42 [2021-06-14 12:02:49,327 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:49,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:49,347 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:49,347 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:61, output treesize:60 [2021-06-14 12:02:49,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:49,471 INFO L354 Elim1Store]: treesize reduction 114, result has 16.8 percent of original size [2021-06-14 12:02:49,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 52 [2021-06-14 12:02:49,474 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:49,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:49,497 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 1 xjuncts. [2021-06-14 12:02:49,497 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:73, output treesize:72 [2021-06-14 12:02:49,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:49,669 INFO L354 Elim1Store]: treesize reduction 164, result has 14.6 percent of original size [2021-06-14 12:02:49,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 48 treesize of output 62 [2021-06-14 12:02:49,671 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:49,697 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:49,706 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:49,706 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:85, output treesize:84 [2021-06-14 12:02:49,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:49,982 INFO L354 Elim1Store]: treesize reduction 222, result has 12.9 percent of original size [2021-06-14 12:02:49,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 55 treesize of output 72 [2021-06-14 12:02:49,984 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:50,010 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:50,030 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:50,030 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:97, output treesize:96 [2021-06-14 12:02:51,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:02:51,655 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 31 [2021-06-14 12:02:51,655 INFO L354 Elim1Store]: treesize reduction 288, result has 11.7 percent of original size [2021-06-14 12:02:51,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 62 treesize of output 82 [2021-06-14 12:02:51,658 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:02:51,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:02:51,706 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-14 12:02:51,706 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:109, output treesize:108 [2021-06-14 12:03:13,472 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-14 12:03:13,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 12:03:13,709 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 35 [2021-06-14 12:03:13,710 INFO L354 Elim1Store]: treesize reduction 362, result has 10.6 percent of original size [2021-06-14 12:03:13,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 69 treesize of output 92 [2021-06-14 12:03:13,711 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 12:03:13,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 12:03:13,771 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2021-06-14 12:03:13,776 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:121, output treesize:120 [2021-06-14 12:03:47,048 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-06-14 12:03:47,049 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-06-14 12:03:47,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 12:03:47,250 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:561) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:364) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:238) ... 46 more [2021-06-14 12:03:47,253 INFO L168 Benchmark]: Toolchain (without parser) took 86045.03 ms. Allocated memory was 191.9 MB in the beginning and 420.5 MB in the end (delta: 228.6 MB). Free memory was 171.3 MB in the beginning and 368.8 MB in the end (delta: -197.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2021-06-14 12:03:47,253 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 191.9 MB. Free memory was 172.4 MB in the beginning and 172.4 MB in the end (delta: 88.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-14 12:03:47,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.55 ms. Allocated memory is still 191.9 MB. Free memory was 171.2 MB in the beginning and 169.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-14 12:03:47,254 INFO L168 Benchmark]: Boogie Preprocessor took 11.09 ms. Allocated memory is still 191.9 MB. Free memory was 169.7 MB in the beginning and 168.8 MB in the end (delta: 938.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-14 12:03:47,254 INFO L168 Benchmark]: RCFGBuilder took 264.36 ms. Allocated memory is still 191.9 MB. Free memory was 168.7 MB in the beginning and 155.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-14 12:03:47,254 INFO L168 Benchmark]: TraceAbstraction took 85744.10 ms. Allocated memory was 191.9 MB in the beginning and 420.5 MB in the end (delta: 228.6 MB). Free memory was 155.4 MB in the beginning and 368.8 MB in the end (delta: -213.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-06-14 12:03:47,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 191.9 MB. Free memory was 172.4 MB in the beginning and 172.4 MB in the end (delta: 88.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 21.55 ms. Allocated memory is still 191.9 MB. Free memory was 171.2 MB in the beginning and 169.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.09 ms. Allocated memory is still 191.9 MB. Free memory was 169.7 MB in the beginning and 168.8 MB in the end (delta: 938.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 264.36 ms. Allocated memory is still 191.9 MB. Free memory was 168.7 MB in the beginning and 155.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 85744.10 ms. Allocated memory was 191.9 MB in the beginning and 420.5 MB in the end (delta: 228.6 MB). Free memory was 155.4 MB in the beginning and 368.8 MB in the end (delta: -213.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...