/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Symm.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 21:28:46,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 21:28:46,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 21:28:46,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-16 21:28:46,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Symm.epf [2021-06-16 21:28:46,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 21:28:46,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 21:28:46,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-16 21:28:46,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-16 21:28:46,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 21:28:46,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 21:28:46,419 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 21:28:46,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 21:28:46,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 21:28:46,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 21:28:46,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 21:28:46,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 21:28:46,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 21:28:46,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 21:28:46,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 21:28:46,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 21:28:46,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 21:28:46,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 21:28:46,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 21:28:46,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 21:28:46,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 21:28:46,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 21:28:46,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 21:28:46,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 21:28:46,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 21:28:46,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 21:28:46,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 21:28:46,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 21:28:46,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 21:28:46,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 21:28:46,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-16 21:28:46,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 21:28:46,422 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-16 21:28:46,423 INFO L138 SettingsManager]: * Limit POR to symmetric independence in concurrent analysis=true [2021-06-16 21:28:46,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 21:28:46,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 21:28:46,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 21:28:46,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 21:28:46,668 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 21:28:46,669 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 21:28:46,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl [2021-06-16 21:28:46,669 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq-array.wvr.bpl' [2021-06-16 21:28:46,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 21:28:46,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 21:28:46,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 21:28:46,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 21:28:46,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 21:28:46,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 21:28:46,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 21:28:46,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 21:28:46,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 21:28:46,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/1) ... [2021-06-16 21:28:46,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 21:28:46,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 21:28:46,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 21:28:46,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 21:28:46,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (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 [2021-06-16 21:28:46,781 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 21:28:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 21:28:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 21:28:46,781 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 21:28:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 21:28:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 21:28:46,782 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 21:28:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 21:28:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 21:28:46,782 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 21:28:47,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 21:28:47,001 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 21:28:47,003 INFO L202 PluginConnector]: Adding new model inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 09:28:47 BoogieIcfgContainer [2021-06-16 21:28:47,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 21:28:47,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 21:28:47,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 21:28:47,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 21:28:47,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:46" (1/2) ... [2021-06-16 21:28:47,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680b16ab and model type inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 09:28:47, skipping insertion in model container [2021-06-16 21:28:47,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "inc-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 09:28:47" (2/2) ... [2021-06-16 21:28:47,007 INFO L111 eAbstractionObserver]: Analyzing ICFG inc-subseq-array.wvr.bpl [2021-06-16 21:28:47,011 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 21:28:47,011 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 21:28:47,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 21:28:47,012 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 21:28:47,032 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-16 21:28:47,046 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-06-16 21:28:47,086 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 21:28:47,087 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 21:28:47,087 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 21:28:47,087 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 21:28:47,087 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 21:28:47,087 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 21:28:47,087 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 21:28:47,087 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 21:28:47,183 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:47,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2056057418, now seen corresponding path program 1 times [2021-06-16 21:28:47,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:47,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532050196] [2021-06-16 21:28:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:47,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:47,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532050196] [2021-06-16 21:28:47,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532050196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:47,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125704310] [2021-06-16 21:28:47,469 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 [2021-06-16 21:28:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:47,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-16 21:28:47,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-16 21:28:47,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125704310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 21:28:47,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-16 21:28:47,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2021-06-16 21:28:47,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398583605] [2021-06-16 21:28:47,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 21:28:47,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:47,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 21:28:47,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-16 21:28:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:47,663 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:47,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-06-16 21:28:47,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:47,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-16 21:28:47,921 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:47,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:47,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1693716897, now seen corresponding path program 2 times [2021-06-16 21:28:47,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:47,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261946710] [2021-06-16 21:28:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:48,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:48,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261946710] [2021-06-16 21:28:48,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261946710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:48,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561126497] [2021-06-16 21:28:48,378 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 [2021-06-16 21:28:48,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 21:28:48,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:48,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-16 21:28:48,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:48,978 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:48,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-06-16 21:28:48,996 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:28:49,007 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:49,012 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-16 21:28:49,013 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:26 [2021-06-16 21:28:49,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:49,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:49,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:49,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:49,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-06-16 21:28:49,117 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:28:49,122 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:49,126 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 21:28:49,126 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:5 [2021-06-16 21:28:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:49,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561126497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:49,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:49,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 26 [2021-06-16 21:28:49,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259042299] [2021-06-16 21:28:49,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-16 21:28:49,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:49,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-16 21:28:49,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-06-16 21:28:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:49,148 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:49,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 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) [2021-06-16 21:28:49,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:49,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:28:49,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:49,717 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:49,718 INFO L82 PathProgramCache]: Analyzing trace with hash 197354512, now seen corresponding path program 3 times [2021-06-16 21:28:49,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:49,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642259455] [2021-06-16 21:28:49,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-16 21:28:49,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:49,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642259455] [2021-06-16 21:28:49,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642259455] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:49,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506345370] [2021-06-16 21:28:49,770 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 [2021-06-16 21:28:49,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-16 21:28:49,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:49,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-16 21:28:49,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-16 21:28:49,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506345370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:49,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:49,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-06-16 21:28:49,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583210853] [2021-06-16 21:28:49,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 21:28:49,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:49,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 21:28:49,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-06-16 21:28:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:49,946 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:49,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-06-16 21:28:49,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:49,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:28:49,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:28:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:28:50,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:50,210 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:50,210 INFO L82 PathProgramCache]: Analyzing trace with hash 118040121, now seen corresponding path program 4 times [2021-06-16 21:28:50,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:50,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764864849] [2021-06-16 21:28:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:50,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:50,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764864849] [2021-06-16 21:28:50,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764864849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:50,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515145759] [2021-06-16 21:28:50,863 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 [2021-06-16 21:28:50,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-16 21:28:50,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:50,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-16 21:28:50,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:51,892 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:51,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 86 [2021-06-16 21:28:51,905 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:28:51,977 INFO L628 ElimStorePlain]: treesize reduction 57, result has 72.3 percent of original size [2021-06-16 21:28:52,010 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-16 21:28:52,010 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:76, output treesize:76 [2021-06-16 21:28:52,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:52,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:52,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:52,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:52,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:52,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:52,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:52,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-16 21:28:52,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:28:52,585 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:52,586 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 21:28:52,586 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:5 [2021-06-16 21:28:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:52,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515145759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:52,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:52,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26] total 50 [2021-06-16 21:28:52,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353673362] [2021-06-16 21:28:52,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-06-16 21:28:52,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:52,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-06-16 21:28:52,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2276, Unknown=0, NotChecked=0, Total=2550 [2021-06-16 21:28:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:52,603 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:52,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 50 states have internal predecessors, (90), 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) [2021-06-16 21:28:52,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:52,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:28:52,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:28:52,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:28:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:28:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:28:53,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-16 21:28:53,627 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash 675770793, now seen corresponding path program 5 times [2021-06-16 21:28:53,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:53,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215190105] [2021-06-16 21:28:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 62 proven. 64 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-16 21:28:53,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:53,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215190105] [2021-06-16 21:28:53,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215190105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:53,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197075630] [2021-06-16 21:28:53,703 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 [2021-06-16 21:28:53,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-16 21:28:53,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:53,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-16 21:28:53,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 81 proven. 45 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-16 21:28:53,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197075630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:53,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:53,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-06-16 21:28:53,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858424662] [2021-06-16 21:28:53,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 21:28:53,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:53,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 21:28:53,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-16 21:28:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:53,871 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:53,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-06-16 21:28:53,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:53,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:28:53,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:28:53,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:28:53,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:28:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:28:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:28:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:28:54,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:54,121 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:54,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:54,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2004357023, now seen corresponding path program 6 times [2021-06-16 21:28:54,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:54,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987237311] [2021-06-16 21:28:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:55,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:55,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987237311] [2021-06-16 21:28:55,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987237311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:55,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465165272] [2021-06-16 21:28:55,245 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 [2021-06-16 21:28:55,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-16 21:28:55,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:55,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 70 conjunts are in the unsatisfiable core [2021-06-16 21:28:55,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:29:00,659 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:29:00,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 176 [2021-06-16 21:29:00,698 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:29:00,914 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 102 [2021-06-16 21:29:00,915 INFO L628 ElimStorePlain]: treesize reduction 171, result has 65.8 percent of original size [2021-06-16 21:29:00,961 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-16 21:29:00,961 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:102, output treesize:132 [2021-06-16 21:29:05,649 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2021-06-16 21:29:10,364 WARN L205 SmtUtils]: Spent 3.34 s on a formula simplification that was a NOOP. DAG size: 40 [2021-06-16 21:29:13,412 WARN L205 SmtUtils]: Spent 2.89 s on a formula simplification that was a NOOP. DAG size: 55 [2021-06-16 21:29:13,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:29:13,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:13,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:29:13,770 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-06-16 21:29:13,770 INFO L354 Elim1Store]: treesize reduction 18, result has 91.4 percent of original size [2021-06-16 21:29:13,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 73 treesize of output 215 [2021-06-16 21:29:14,345 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 319 [2021-06-16 21:29:14,461 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 319 [2021-06-16 21:29:14,605 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 324 [2021-06-16 21:29:15,256 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 324 [2021-06-16 21:29:15,632 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 403 DAG size of output: 387 [2021-06-16 21:29:16,714 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 381 [2021-06-16 21:29:17,029 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 492 DAG size of output: 504 [2021-06-16 21:29:17,651 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 816 DAG size of output: 771 [2021-06-16 21:29:18,261 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 816 DAG size of output: 771 [2021-06-16 21:29:18,955 WARN L205 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 819 DAG size of output: 774 [2021-06-16 21:29:19,934 WARN L205 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 776 DAG size of output: 1156 [2021-06-16 21:29:20,823 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 283 [2021-06-16 21:29:21,032 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 447 DAG size of output: 383 [2021-06-16 21:29:22,943 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 1448 DAG size of output: 1087 [2021-06-16 21:29:23,993 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 1448 DAG size of output: 1087 [2021-06-16 21:29:25,142 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 1456 DAG size of output: 716 [2021-06-16 21:29:26,382 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 244 [2021-06-16 21:29:26,617 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 455 DAG size of output: 298 [2021-06-16 21:29:26,907 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 460 DAG size of output: 303 [2021-06-16 21:29:27,202 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 460 DAG size of output: 303 [2021-06-16 21:29:27,225 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:29:27,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:29:27,395 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-16 21:29:27,396 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:29:27,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 64 treesize of output 230 [2021-06-16 21:29:28,396 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 301 [2021-06-16 21:29:28,948 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 348 [2021-06-16 21:29:29,272 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 348 [2021-06-16 21:29:29,666 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 353 [2021-06-16 21:29:30,324 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 498 [2021-06-16 21:29:31,731 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 303 [2021-06-16 21:29:32,087 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 506 DAG size of output: 513 [2021-06-16 21:29:32,608 WARN L205 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 577 [2021-06-16 21:29:33,261 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 281 [2021-06-16 21:29:34,196 WARN L205 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 791 DAG size of output: 799 [2021-06-16 21:29:34,776 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 298 [2021-06-16 21:29:35,033 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 312 [2021-06-16 21:29:35,299 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 390 DAG size of output: 367 [2021-06-16 21:29:36,802 WARN L205 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 973 DAG size of output: 985 [2021-06-16 21:29:38,962 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 1132 DAG size of output: 1144 [2021-06-16 21:29:41,120 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 1132 DAG size of output: 1144 [2021-06-16 21:29:43,440 WARN L205 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 1134 DAG size of output: 1145 [2021-06-16 21:29:47,819 WARN L205 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 1147 DAG size of output: 1783 [2021-06-16 21:29:48,481 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 297 [2021-06-16 21:29:48,665 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 320 [2021-06-16 21:29:49,612 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 270 [2021-06-16 21:29:49,871 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 447 DAG size of output: 423 [2021-06-16 21:29:50,403 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 626 DAG size of output: 603 [2021-06-16 21:29:52,952 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 417 DAG size of output: 365 [2021-06-16 21:29:53,623 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 452 DAG size of output: 393 [2021-06-16 21:29:54,311 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 551 DAG size of output: 477 [2021-06-16 21:29:58,835 WARN L205 SmtUtils]: Spent 4.52 s on a formula simplification. DAG size of input: 2534 DAG size of output: 2236 [2021-06-16 21:30:03,436 WARN L205 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 2534 DAG size of output: 2236 [2021-06-16 21:30:12,416 WARN L205 SmtUtils]: Spent 8.96 s on a formula simplification. DAG size of input: 2542 DAG size of output: 3220 [2021-06-16 21:30:13,055 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 2131 [2021-06-16 21:30:13,225 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 1572 [2021-06-16 21:30:13,479 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 1166 DAG size of output: 1166 [2021-06-16 21:30:17,118 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 553 DAG size of output: 158 [2021-06-16 21:30:19,434 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 832 DAG size of output: 239 [2021-06-16 21:30:23,431 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 388 [2021-06-16 21:30:24,453 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 1806 DAG size of output: 529 [2021-06-16 21:30:25,479 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 1806 DAG size of output: 529 [2021-06-16 21:30:26,512 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 1806 DAG size of output: 529 [2021-06-16 21:30:26,564 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 8 xjuncts. [2021-06-16 21:30:28,443 WARN L205 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 825 DAG size of output: 59 [2021-06-16 21:30:28,444 INFO L628 ElimStorePlain]: treesize reduction 17589, result has 0.8 percent of original size [2021-06-16 21:30:28,497 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-16 21:30:28,497 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:167, output treesize:64 [2021-06-16 21:30:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 5 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:30:28,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465165272] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:30:28,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:30:28,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 39] total 77 [2021-06-16 21:30:28,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81243038] [2021-06-16 21:30:28,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-06-16 21:30:28,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:30:28,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-06-16 21:30:28,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=5480, Unknown=0, NotChecked=0, Total=6006 [2021-06-16 21:30:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:30:28,650 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:30:28,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 77 states have internal predecessors, (129), 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) [2021-06-16 21:30:28,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:30:28,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:30:28,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:30:28,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:30:28,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:30:28,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:30:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:30:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:30:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:30:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:30:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:30:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:30:32,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-16 21:30:32,122 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:30:32,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:30:32,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2093882198, now seen corresponding path program 7 times [2021-06-16 21:30:32,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:30:32,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760014320] [2021-06-16 21:30:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:30:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:30:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 155 proven. 154 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-06-16 21:30:32,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:30:32,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760014320] [2021-06-16 21:30:32,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760014320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:30:32,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196563842] [2021-06-16 21:30:32,195 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 [2021-06-16 21:30:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:30:32,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-16 21:30:32,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:30:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 183 proven. 126 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-06-16 21:30:32,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196563842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:30:32,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:30:32,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-06-16 21:30:32,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135450830] [2021-06-16 21:30:32,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 21:30:32,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:30:32,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 21:30:32,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-16 21:30:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:30:32,401 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:30:32,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-06-16 21:30:32,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:30:32,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:30:32,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:30:32,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:30:32,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:30:32,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:30:32,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:30:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:30:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:30:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:30:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:30:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:30:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:30:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:30:32,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8236 [2021-06-16 21:30:32,653 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:30:32,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:30:32,653 INFO L82 PathProgramCache]: Analyzing trace with hash -54910843, now seen corresponding path program 8 times [2021-06-16 21:30:32,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:30:32,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394400600] [2021-06-16 21:30:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:30:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:30:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:30:34,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:30:34,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394400600] [2021-06-16 21:30:34,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394400600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:30:34,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38288653] [2021-06-16 21:30:34,487 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 [2021-06-16 21:30:34,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 21:30:34,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:30:34,532 WARN L261 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 95 conjunts are in the unsatisfiable core [2021-06-16 21:30:34,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:30:52,346 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-16 21:30:52,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:30:52,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 120 treesize of output 300 [2021-06-16 21:30:52,389 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:30:52,892 WARN L205 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 152 [2021-06-16 21:30:52,892 INFO L628 ElimStorePlain]: treesize reduction 393, result has 57.2 percent of original size [2021-06-16 21:30:53,077 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 21:30:53,078 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:128, output treesize:106 [2021-06-16 21:31:01,336 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 86 [2021-06-16 21:31:01,336 INFO L354 Elim1Store]: treesize reduction 240, result has 40.1 percent of original size [2021-06-16 21:31:01,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 84 treesize of output 188 [2021-06-16 21:31:02,006 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 248 [2021-06-16 21:31:02,173 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 312 [2021-06-16 21:31:02,876 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 387 DAG size of output: 349 [2021-06-16 21:31:03,157 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 387 DAG size of output: 349 [2021-06-16 21:31:04,091 WARN L205 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 404 DAG size of output: 496 [2021-06-16 21:31:04,297 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 361 [2021-06-16 21:31:05,238 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 233 [2021-06-16 21:31:05,410 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 273 [2021-06-16 21:31:05,515 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 327 [2021-06-16 21:31:06,115 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 309 [2021-06-16 21:31:06,377 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 350 [2021-06-16 21:31:06,664 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 496 DAG size of output: 444 [2021-06-16 21:31:07,236 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 674 DAG size of output: 587 [2021-06-16 21:31:08,179 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 318 [2021-06-16 21:31:08,872 WARN L205 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 405 DAG size of output: 375 [2021-06-16 21:31:09,993 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 857 DAG size of output: 758 [2021-06-16 21:31:14,898 WARN L205 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 1038 DAG size of output: 929 [2021-06-16 21:31:24,140 WARN L205 SmtUtils]: Spent 9.23 s on a formula simplification. DAG size of input: 1038 DAG size of output: 929 [2021-06-16 21:31:35,858 WARN L205 SmtUtils]: Spent 11.71 s on a formula simplification. DAG size of input: 1040 DAG size of output: 922 [2021-06-16 21:31:38,438 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 424 DAG size of output: 151 [2021-06-16 21:31:38,665 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 232 [2021-06-16 21:31:39,334 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 189 [2021-06-16 21:31:39,596 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 250 [2021-06-16 21:31:39,918 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 254 [2021-06-16 21:31:40,138 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 258 [2021-06-16 21:31:45,550 WARN L205 SmtUtils]: Spent 4.75 s on a formula simplification. DAG size of input: 644 DAG size of output: 213 [2021-06-16 21:31:45,786 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 644 DAG size of output: 207 [2021-06-16 21:31:46,053 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 656 DAG size of output: 222 [2021-06-16 21:31:46,255 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 5 xjuncts. [2021-06-16 21:31:46,458 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 19 [2021-06-16 21:31:46,459 INFO L628 ElimStorePlain]: treesize reduction 2622, result has 0.9 percent of original size [2021-06-16 21:31:46,462 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 21:31:46,462 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:93, output treesize:21 [2021-06-16 21:31:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:31:46,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38288653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:31:46,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:31:46,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 51] total 104 [2021-06-16 21:31:46,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687554297] [2021-06-16 21:31:46,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-06-16 21:31:46,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:31:46,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-06-16 21:31:46,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=10105, Unknown=3, NotChecked=0, Total=10920 [2021-06-16 21:31:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:31:46,631 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:31:46,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 1.5809523809523809) internal successors, (166), 104 states have internal predecessors, (166), 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) [2021-06-16 21:31:46,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:31:46,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:31:46,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:31:46,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:31:46,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:31:46,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:31:46,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:31:46,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:31:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-16 21:31:56,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8237 [2021-06-16 21:31:56,531 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:31:56,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:31:56,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1984037381, now seen corresponding path program 9 times [2021-06-16 21:31:56,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:31:56,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996188741] [2021-06-16 21:31:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:31:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:31:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 290 proven. 283 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-06-16 21:31:56,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:31:56,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996188741] [2021-06-16 21:31:56,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996188741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:31:56,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861849386] [2021-06-16 21:31:56,608 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 [2021-06-16 21:31:56,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-16 21:31:56,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:31:56,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-16 21:31:56,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:31:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 327 proven. 246 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-06-16 21:31:56,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861849386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:31:56,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:31:56,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-06-16 21:31:56,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253359880] [2021-06-16 21:31:56,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 21:31:56,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:31:56,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 21:31:56,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-16 21:31:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:31:56,835 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:31:56,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-06-16 21:31:56,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:31:56,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:31:56,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:31:56,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:31:56,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:31:56,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:31:56,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:31:56,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-06-16 21:31:56,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:31:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:31:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:31:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:31:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:31:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:31:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:31:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:31:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-16 21:31:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 21:31:57,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10460,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:31:57,113 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:31:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:31:57,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1957977055, now seen corresponding path program 10 times [2021-06-16 21:31:57,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:31:57,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864413516] [2021-06-16 21:31:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:31:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:31:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:31:59,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:31:59,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864413516] [2021-06-16 21:31:59,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864413516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:31:59,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787523662] [2021-06-16 21:31:59,854 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 [2021-06-16 21:31:59,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-16 21:31:59,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:31:59,900 WARN L261 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 119 conjunts are in the unsatisfiable core [2021-06-16 21:31:59,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:32:03,559 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-06-16 21:32:26,545 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-16 21:32:55,034 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-16 21:33:06,602 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-06-16 21:33:06,603 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-06-16 21:33:06,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10461,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:33:06,804 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:363) 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 [2021-06-16 21:33:06,809 INFO L168 Benchmark]: Toolchain (without parser) took 260112.66 ms. Allocated memory was 210.8 MB in the beginning and 1.2 GB in the end (delta: 980.4 MB). Free memory was 190.5 MB in the beginning and 1.0 GB in the end (delta: -857.0 MB). Peak memory consumption was 124.1 MB. Max. memory is 8.0 GB. [2021-06-16 21:33:06,809 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 210.8 MB. Free memory is still 191.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 21:33:06,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.70 ms. Allocated memory is still 210.8 MB. Free memory was 190.5 MB in the beginning and 189.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 21:33:06,809 INFO L168 Benchmark]: Boogie Preprocessor took 12.11 ms. Allocated memory is still 210.8 MB. Free memory was 189.1 MB in the beginning and 188.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 21:33:06,809 INFO L168 Benchmark]: RCFGBuilder took 270.66 ms. Allocated memory is still 210.8 MB. Free memory was 188.0 MB in the beginning and 174.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-16 21:33:06,809 INFO L168 Benchmark]: TraceAbstraction took 259804.16 ms. Allocated memory was 210.8 MB in the beginning and 1.2 GB in the end (delta: 980.4 MB). Free memory was 174.0 MB in the beginning and 1.0 GB in the end (delta: -873.5 MB). Peak memory consumption was 107.3 MB. Max. memory is 8.0 GB. [2021-06-16 21:33:06,809 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 210.8 MB. Free memory is still 191.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 21.70 ms. Allocated memory is still 210.8 MB. Free memory was 190.5 MB in the beginning and 189.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.11 ms. Allocated memory is still 210.8 MB. Free memory was 189.1 MB in the beginning and 188.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 270.66 ms. Allocated memory is still 210.8 MB. Free memory was 188.0 MB in the beginning and 174.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 259804.16 ms. Allocated memory was 210.8 MB in the beginning and 1.2 GB in the end (delta: 980.4 MB). Free memory was 174.0 MB in the beginning and 1.0 GB in the end (delta: -873.5 MB). Peak memory consumption was 107.3 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...