/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-04 00:23:28,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-04 00:23:28,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-04 00:23:28,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-04 00:23:28,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf [2021-05-04 00:23:28,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-04 00:23:28,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-04 00:23:28,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-04 00:23:28,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-04 00:23:28,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-04 00:23:28,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-04 00:23:28,523 INFO L138 SettingsManager]: * Use SBE=true [2021-05-04 00:23:28,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-04 00:23:28,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-04 00:23:28,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-04 00:23:28,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-04 00:23:28,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-04 00:23:28,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-04 00:23:28,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-04 00:23:28,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-04 00:23:28,525 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-04 00:23:28,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-04 00:23:28,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-04 00:23:28,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-04 00:23:28,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-04 00:23:28,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-04 00:23:28,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-04 00:23:28,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-04 00:23:28,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-04 00:23:28,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-04 00:23:28,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-04 00:23:28,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-04 00:23:28,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-04 00:23:28,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-04 00:23:28,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-04 00:23:28,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-05-04 00:23:28,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-04 00:23:28,527 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-05-04 00:23:28,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-04 00:23:28,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-04 00:23:28,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-04 00:23:28,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-04 00:23:28,839 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-04 00:23:28,840 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-04 00:23:28,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl [2021-05-04 00:23:28,841 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl' [2021-05-04 00:23:28,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-04 00:23:28,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-04 00:23:28,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-04 00:23:28,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-04 00:23:28,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-04 00:23:28,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-04 00:23:28,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-04 00:23:28,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-04 00:23:28,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-04 00:23:28,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/1) ... [2021-05-04 00:23:28,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-04 00:23:28,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-04 00:23:28,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-04 00:23:28,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-04 00:23:28,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (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 [2021-05-04 00:23:28,971 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-04 00:23:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-04 00:23:28,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-04 00:23:28,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-04 00:23:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-04 00:23:28,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-04 00:23:28,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-04 00:23:28,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-04 00:23:28,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-04 00:23:28,973 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-04 00:23:29,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-04 00:23:29,273 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-04 00:23:29,274 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-05-04 00:23:29,275 INFO L202 PluginConnector]: Adding new model unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.05 12:23:29 BoogieIcfgContainer [2021-05-04 00:23:29,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-04 00:23:29,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-04 00:23:29,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-04 00:23:29,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-04 00:23:29,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.05 12:23:28" (1/2) ... [2021-05-04 00:23:29,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21eed6e7 and model type unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.05 12:23:29, skipping insertion in model container [2021-05-04 00:23:29,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.05 12:23:29" (2/2) ... [2021-05-04 00:23:29,281 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.bpl [2021-05-04 00:23:29,285 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-04 00:23:29,285 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-04 00:23:29,288 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-04 00:23:29,289 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-04 00:23:29,311 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-05-04 00:23:29,329 INFO L253 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 [2021-05-04 00:23:29,418 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-04 00:23:29,419 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-04 00:23:29,419 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-04 00:23:29,419 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-04 00:23:29,423 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-04 00:23:29,423 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-04 00:23:29,423 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-04 00:23:29,424 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-04 00:23:29,619 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:23:29,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:23:29,623 INFO L82 PathProgramCache]: Analyzing trace with hash 51943413, now seen corresponding path program 1 times [2021-05-04 00:23:29,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:23:29,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252789899] [2021-05-04 00:23:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:23:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:23:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:29,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252789899] [2021-05-04 00:23:29,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-04 00:23:29,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-04 00:23:29,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49019345] [2021-05-04 00:23:29,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-04 00:23:29,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:23:29,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-04 00:23:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-04 00:23:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:29,876 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:23:29,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-05-04 00:23:29,878 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:29,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-04 00:23:29,923 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:23:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:23:29,926 INFO L82 PathProgramCache]: Analyzing trace with hash 642064071, now seen corresponding path program 1 times [2021-05-04 00:23:29,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:23:29,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072714275] [2021-05-04 00:23:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:23:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:23:31,466 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 5600 DAG size of output: 76 [2021-05-04 00:23:31,708 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 30 [2021-05-04 00:23:32,601 WARN L205 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 5598 DAG size of output: 15 [2021-05-04 00:23:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:32,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072714275] [2021-05-04 00:23:32,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554069855] [2021-05-04 00:23:32,624 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) [2021-05-04 00:23:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-04 00:23:32,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-04 00:23:32,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:23:33,508 WARN L205 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 13 [2021-05-04 00:23:33,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-05-04 00:23:33,537 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-04 00:23:33,539 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:23:33,540 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-04 00:23:33,540 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-05-04 00:23:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:33,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:23:33,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-05-04 00:23:33,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442292513] [2021-05-04 00:23:33,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-04 00:23:33,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:23:33,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-04 00:23:33,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-04 00:23:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:33,555 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:23:33,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-05-04 00:23:33,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:33,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:33,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-04 00:23:33,819 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:23:33,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:23:33,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1755935285, now seen corresponding path program 2 times [2021-05-04 00:23:33,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:23:33,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213362836] [2021-05-04 00:23:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:23:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:23:34,313 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 2846 DAG size of output: 51 [2021-05-04 00:23:34,427 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2021-05-04 00:23:35,101 WARN L205 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 5518 DAG size of output: 48 [2021-05-04 00:23:35,679 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-05-04 00:23:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:35,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213362836] [2021-05-04 00:23:35,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965246997] [2021-05-04 00:23:35,704 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 [2021-05-04 00:23:35,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-04 00:23:35,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-04 00:23:35,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-04 00:23:35,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:23:36,674 WARN L205 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 15 [2021-05-04 00:23:36,694 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:23:36,694 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 18 [2021-05-04 00:23:36,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-04 00:23:36,701 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:23:36,702 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-04 00:23:36,702 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:3 [2021-05-04 00:23:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:36,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:23:36,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-05-04 00:23:36,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165129301] [2021-05-04 00:23:36,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-04 00:23:36,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:23:36,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-04 00:23:36,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-04 00:23:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:36,711 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:23:36,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-05-04 00:23:36,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:36,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:36,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:23:36,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-04 00:23:36,997 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:23:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:23:36,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1926204551, now seen corresponding path program 3 times [2021-05-04 00:23:36,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:23:36,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343829139] [2021-05-04 00:23:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:23:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:23:37,489 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 2845 DAG size of output: 44 [2021-05-04 00:23:38,187 WARN L205 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 25 [2021-05-04 00:23:38,798 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 5508 DAG size of output: 14 [2021-05-04 00:23:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:38,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343829139] [2021-05-04 00:23:38,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522799696] [2021-05-04 00:23:38,818 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 [2021-05-04 00:23:38,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-04 00:23:38,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-04 00:23:38,853 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-04 00:23:38,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:23:39,585 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 16 [2021-05-04 00:23:39,601 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:23:39,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 37 [2021-05-04 00:23:39,623 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-04 00:23:39,624 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:23:39,625 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-04 00:23:39,625 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:3 [2021-05-04 00:23:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:39,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:23:39,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-05-04 00:23:39,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628122550] [2021-05-04 00:23:39,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-04 00:23:39,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:23:39,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-04 00:23:39,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-05-04 00:23:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:39,633 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:23:39,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-05-04 00:23:39,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:39,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:39,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:23:39,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:23:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:23:39,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-04 00:23:39,905 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:23:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:23:39,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1385382795, now seen corresponding path program 4 times [2021-05-04 00:23:39,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:23:39,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278096216] [2021-05-04 00:23:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:23:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:23:40,323 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 2844 DAG size of output: 48 [2021-05-04 00:23:40,938 WARN L205 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-05-04 00:23:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:40,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278096216] [2021-05-04 00:23:40,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598551917] [2021-05-04 00:23:40,953 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 [2021-05-04 00:23:40,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-04 00:23:40,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-04 00:23:40,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-04 00:23:40,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:23:43,458 WARN L205 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 5724 DAG size of output: 51 [2021-05-04 00:23:43,519 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:23:43,519 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2021-05-04 00:23:43,555 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-04 00:23:43,556 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:23:43,556 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-04 00:23:43,556 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:3 [2021-05-04 00:23:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:43,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:23:43,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-05-04 00:23:43,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247962735] [2021-05-04 00:23:43,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-04 00:23:43,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:23:43,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-04 00:23:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-04 00:23:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:43,564 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:23:43,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2021-05-04 00:23:43,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:43,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:43,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:23:43,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:23:43,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:23:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:23:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:23:43,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-05-04 00:23:43,855 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:23:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:23:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash -965375417, now seen corresponding path program 5 times [2021-05-04 00:23:43,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:23:43,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815029393] [2021-05-04 00:23:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:23:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:23:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:43,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815029393] [2021-05-04 00:23:43,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258596163] [2021-05-04 00:23:43,896 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 [2021-05-04 00:23:43,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-05-04 00:23:43,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-04 00:23:43,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-04 00:23:43,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:23:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:43,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:23:43,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-05-04 00:23:43,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075246943] [2021-05-04 00:23:43,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-04 00:23:43,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:23:43,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-04 00:23:43,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-05-04 00:23:43,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:43,966 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:23:43,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-05-04 00:23:43,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:43,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:43,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:23:43,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:23:43,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:23:43,967 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:23:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:23:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:23:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:23:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:23:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:23:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:23:44,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-04 00:23:44,204 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:23:44,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:23:44,205 INFO L82 PathProgramCache]: Analyzing trace with hash 829683594, now seen corresponding path program 1 times [2021-05-04 00:23:44,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:23:44,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098172986] [2021-05-04 00:23:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:23:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:23:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:23:44,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098172986] [2021-05-04 00:23:44,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692645115] [2021-05-04 00:23:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-04 00:23:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:23:44,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-04 00:23:44,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:24:04,303 WARN L205 SmtUtils]: Spent 19.41 s on a formula simplification. DAG size of input: 51297 DAG size of output: 54 [2021-05-04 00:24:04,358 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:24:04,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 27 treesize of output 99 [2021-05-04 00:24:04,415 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-04 00:24:04,416 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:24:04,416 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-04 00:24:04,416 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:3 [2021-05-04 00:24:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:24:04,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:24:04,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-05-04 00:24:04,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355507775] [2021-05-04 00:24:04,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-04 00:24:04,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:24:04,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-04 00:24:04,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-05-04 00:24:04,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:24:04,423 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:24:04,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 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) [2021-05-04 00:24:04,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:24:04,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:24:04,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:24:04,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:04,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:04,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:24:04,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:24:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:24:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:24:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:24:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:24:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:04,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-04 00:24:04,817 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:24:04,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:24:04,817 INFO L82 PathProgramCache]: Analyzing trace with hash 729848028, now seen corresponding path program 2 times [2021-05-04 00:24:04,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:24:04,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13542028] [2021-05-04 00:24:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:24:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:24:05,419 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-05-04 00:24:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:24:05,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13542028] [2021-05-04 00:24:05,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206958397] [2021-05-04 00:24:05,441 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 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 [2021-05-04 00:24:05,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-04 00:24:05,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-04 00:24:05,461 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-04 00:24:05,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:24:05,816 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 19 [2021-05-04 00:24:05,871 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:24:05,871 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 11 new quantified variables, introduced 15 case distinctions, treesize of input 31 treesize of output 142 [2021-05-04 00:24:06,092 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-04 00:24:06,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:24:06,094 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-04 00:24:06,094 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:3 [2021-05-04 00:24:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:24:06,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:24:06,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-05-04 00:24:06,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001382629] [2021-05-04 00:24:06,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-04 00:24:06,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:24:06,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-04 00:24:06,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-05-04 00:24:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:24:06,111 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:24:06,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 states have internal predecessors, (29), 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) [2021-05-04 00:24:06,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:24:06,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:24:06,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:24:06,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:06,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:06,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:24:06,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:06,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:24:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:24:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:24:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:24:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:24:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:06,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-04 00:24:06,424 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:24:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:24:06,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1929912778, now seen corresponding path program 3 times [2021-05-04 00:24:06,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:24:06,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512902388] [2021-05-04 00:24:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:24:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:24:07,131 WARN L205 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-05-04 00:24:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:24:07,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512902388] [2021-05-04 00:24:07,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020890267] [2021-05-04 00:24:07,154 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 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 [2021-05-04 00:24:07,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-05-04 00:24:07,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-04 00:24:07,182 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-04 00:24:07,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:24:07,610 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 20 [2021-05-04 00:24:07,677 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:24:07,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 35 treesize of output 193 [2021-05-04 00:24:08,025 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-04 00:24:08,026 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:24:08,026 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-04 00:24:08,027 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:3 [2021-05-04 00:24:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:24:08,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:24:08,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-05-04 00:24:08,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235354272] [2021-05-04 00:24:08,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-04 00:24:08,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:24:08,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-04 00:24:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-05-04 00:24:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:24:08,036 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:24:08,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 states have internal predecessors, (31), 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) [2021-05-04 00:24:08,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:24:08,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:24:08,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:24:08,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:08,038 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:08,038 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:24:08,038 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:08,038 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:08,038 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:24:08,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:24:08,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:24:08,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:24:08,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:24:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-04 00:24:08,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-04 00:24:08,437 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:24:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:24:08,437 INFO L82 PathProgramCache]: Analyzing trace with hash 477214364, now seen corresponding path program 4 times [2021-05-04 00:24:08,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:24:08,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599179239] [2021-05-04 00:24:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:24:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:24:10,857 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 12259 DAG size of output: 36 [2021-05-04 00:24:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:24:10,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599179239] [2021-05-04 00:24:10,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211283691] [2021-05-04 00:24:10,924 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 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 [2021-05-04 00:24:10,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-04 00:24:10,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-04 00:24:10,963 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-04 00:24:10,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-04 00:24:11,402 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 21 [2021-05-04 00:24:11,500 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:24:11,500 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 15 new quantified variables, introduced 28 case distinctions, treesize of input 39 treesize of output 252 [2021-05-04 00:24:12,333 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-04 00:24:12,335 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-04 00:24:12,335 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-04 00:24:12,335 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:3 [2021-05-04 00:24:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:24:12,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-04 00:24:12,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-05-04 00:24:12,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727502519] [2021-05-04 00:24:12,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-04 00:24:12,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-04 00:24:12,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-04 00:24:12,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-05-04 00:24:12,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:24:12,345 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-04 00:24:12,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 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) [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-05-04 00:24:12,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-04 00:24:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-04 00:24:12,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-05-04 00:24:12,757 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-04 00:24:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-04 00:24:12,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1606763510, now seen corresponding path program 5 times [2021-05-04 00:24:12,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-04 00:24:12,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759084734] [2021-05-04 00:24:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-04 00:24:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-04 00:24:13,512 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-05-04 00:24:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-04 00:24:13,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759084734] [2021-05-04 00:24:13,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213254410] [2021-05-04 00:24:13,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-05-04 00:24:13,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-04 00:24:13,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-04 00:24:13,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-04 00:24:13,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown