/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.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-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 20:39:14,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 20:39:14,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 20:39:14,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 20:39:14,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf [2021-07-14 20:39:14,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 20:39:14,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 20:39:14,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 20:39:14,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 20:39:14,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 20:39:14,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 20:39:14,518 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 20:39:14,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 20:39:14,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 20:39:14,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 20:39:14,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 20:39:14,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 20:39:14,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 20:39:14,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 20:39:14,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 20:39:14,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 20:39:14,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 20:39:14,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 20:39:14,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 20:39:14,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 20:39:14,520 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-14 20:39:14,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 20:39:14,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 20:39:14,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 20:39:14,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 20:39:14,521 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 20:39:14,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-14 20:39:14,521 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 20:39:14,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 20:39:14,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 20:39:14,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 20:39:14,751 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 20:39:14,753 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 20:39:14,754 INFO L432 ainManager$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 [2021-07-14 20:39:14,754 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl' [2021-07-14 20:39:14,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 20:39:14,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 20:39:14,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 20:39:14,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 20:39:14,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 20:39:14,786 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,791 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 20:39:14,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 20:39:14,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 20:39:14,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 20:39:14,802 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,802 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,803 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,803 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,805 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,806 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,807 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 14.07 08:39:14" (1/1) ... [2021-07-14 20:39:14,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 20:39:14,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 20:39:14,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 20:39:14,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 20:39:14,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 08:39:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 20:39:14,851 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 20:39:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 20:39:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 20:39:14,852 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 20:39:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 20:39:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 20:39:14,852 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 20:39:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 20:39:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 20:39:14,853 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 20:39:15,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 20:39:15,123 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-07-14 20:39:15,123 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-07-14 20:39:15,125 INFO L202 PluginConnector]: Adding new model unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 08:39:15 BoogieIcfgContainer [2021-07-14 20:39:15,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 20:39:15,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 20:39:15,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 20:39:15,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 20:39:15,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 08:39:14" (1/2) ... [2021-07-14 20:39:15,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14629def and model type unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 08:39:15, skipping insertion in model container [2021-07-14 20:39:15,129 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 14.07 08:39:15" (2/2) ... [2021-07-14 20:39:15,130 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.bpl [2021-07-14 20:39:15,134 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 20:39:15,135 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 20:39:15,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 20:39:15,135 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 20:39:15,168 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-14 20:39:15,190 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 [2021-07-14 20:39:15,234 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 20:39:15,235 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 20:39:15,239 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 20:39:15,239 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 20:39:15,239 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 20:39:15,239 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 20:39:15,239 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 20:39:15,239 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 20:39:15,275 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:39:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:39:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash 47474763, now seen corresponding path program 1 times [2021-07-14 20:39:15,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:39:15,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988449299] [2021-07-14 20:39:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:39:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:15,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:39:15,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988449299] [2021-07-14 20:39:15,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988449299] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 20:39:15,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 20:39:15,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 20:39:15,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780388748] [2021-07-14 20:39:15,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 20:39:15,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:39:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 20:39:15,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-14 20:39:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:15,469 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:39:15,471 INFO L483 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) [2021-07-14 20:39:15,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:15,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 20:39:15,498 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:39:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:39:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash 637595421, now seen corresponding path program 1 times [2021-07-14 20:39:15,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:39:15,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333830504] [2021-07-14 20:39:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:39:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:16,592 WARN L205 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 5498 DAG size of output: 50 [2021-07-14 20:39:16,725 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2021-07-14 20:39:17,469 WARN L205 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-07-14 20:39:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:17,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:39:17,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333830504] [2021-07-14 20:39:17,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333830504] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:17,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948066242] [2021-07-14 20:39:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:17,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 20:39:17,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:39:18,895 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 2125 DAG size of output: 13 [2021-07-14 20:39:18,918 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 [2021-07-14 20:39:18,920 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 20:39:18,938 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:39:18,938 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 20:39:18,939 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-07-14 20:39:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:18,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948066242] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:18,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:39:18,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-07-14 20:39:18,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771768050] [2021-07-14 20:39:18,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 20:39:18,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:39:18,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 20:39:18,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-07-14 20:39:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:18,964 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:39:18,965 INFO L483 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) [2021-07-14 20:39:18,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:18,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:19,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:19,210 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:39:19,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:39:19,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1751466635, now seen corresponding path program 2 times [2021-07-14 20:39:19,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:39:19,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142526450] [2021-07-14 20:39:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:39:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:19,719 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 2846 DAG size of output: 46 [2021-07-14 20:39:20,645 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 5518 DAG size of output: 38 [2021-07-14 20:39:21,534 WARN L205 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-07-14 20:39:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:21,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:39:21,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142526450] [2021-07-14 20:39:21,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142526450] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:21,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301260728] [2021-07-14 20:39:21,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:21,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 20:39:21,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 20:39:21,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-14 20:39:21,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:39:22,526 WARN L205 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 15 [2021-07-14 20:39:22,548 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:39:22,549 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 [2021-07-14 20:39:22,552 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 20:39:22,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:39:22,553 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 20:39:22,553 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:3 [2021-07-14 20:39:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:22,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301260728] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:22,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:39:22,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-14 20:39:22,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64988842] [2021-07-14 20:39:22,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 20:39:22,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:39:22,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 20:39:22,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-07-14 20:39:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:22,563 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:39:22,564 INFO L483 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) [2021-07-14 20:39:22,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:22,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:22,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:39:22,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:22,845 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:39:22,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:39:22,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1921735901, now seen corresponding path program 3 times [2021-07-14 20:39:22,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:39:22,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209371184] [2021-07-14 20:39:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:39:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:23,402 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 2845 DAG size of output: 42 [2021-07-14 20:39:24,302 WARN L205 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 25 [2021-07-14 20:39:25,157 WARN L205 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 5508 DAG size of output: 14 [2021-07-14 20:39:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:25,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:39:25,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209371184] [2021-07-14 20:39:25,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209371184] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:25,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308189522] [2021-07-14 20:39:25,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:25,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-14 20:39:25,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 20:39:25,201 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-14 20:39:25,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:39:26,153 WARN L205 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 16 [2021-07-14 20:39:26,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:39:26,171 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 [2021-07-14 20:39:26,209 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 20:39:26,210 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:39:26,210 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 20:39:26,210 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:3 [2021-07-14 20:39:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:26,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308189522] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:26,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:39:26,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-14 20:39:26,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549042751] [2021-07-14 20:39:26,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 20:39:26,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:39:26,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 20:39:26,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-07-14 20:39:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:26,224 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:39:26,225 INFO L483 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) [2021-07-14 20:39:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:39:26,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:39:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:39:26,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:26,501 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:39:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:39:26,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1389851445, now seen corresponding path program 4 times [2021-07-14 20:39:26,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:39:26,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087489622] [2021-07-14 20:39:26,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:39:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:27,018 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 2844 DAG size of output: 41 [2021-07-14 20:39:27,877 WARN L205 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-07-14 20:39:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:27,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:39:27,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087489622] [2021-07-14 20:39:27,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087489622] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:27,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092878399] [2021-07-14 20:39:27,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:27,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 20:39:27,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 20:39:27,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 22 conjunts are in the unsatisfiable core [2021-07-14 20:39:27,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:39:31,411 WARN L205 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 5724 DAG size of output: 48 [2021-07-14 20:39:31,467 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:39:31,467 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 [2021-07-14 20:39:31,494 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 20:39:31,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:39:31,496 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 20:39:31,496 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:3 [2021-07-14 20:39:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:31,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092878399] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:31,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:39:31,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-14 20:39:31,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102516106] [2021-07-14 20:39:31,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 20:39:31,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:39:31,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 20:39:31,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-07-14 20:39:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:31,503 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:39:31,503 INFO L483 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) [2021-07-14 20:39:31,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:31,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:31,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:39:31,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:39:31,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:39:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:39:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:39:31,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-07-14 20:39:31,793 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:39:31,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:39:31,793 INFO L82 PathProgramCache]: Analyzing trace with hash -969844067, now seen corresponding path program 5 times [2021-07-14 20:39:31,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:39:31,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961237497] [2021-07-14 20:39:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:39:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:31,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:39:31,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961237497] [2021-07-14 20:39:31,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961237497] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:31,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584297860] [2021-07-14 20:39:31,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:31,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-07-14 20:39:31,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 20:39:31,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 20:39:31,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:39:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:31,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584297860] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:31,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:39:31,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-07-14 20:39:31,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847760764] [2021-07-14 20:39:31,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 20:39:31,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:39:31,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 20:39:31,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-14 20:39:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:31,893 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:39:31,893 INFO L483 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) [2021-07-14 20:39:31,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:31,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:31,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:39:31,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:39:31,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:39:31,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:39:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:39:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:39:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:39:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:39:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:39:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:39:32,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:39:32,145 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:39:32,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:39:32,145 INFO L82 PathProgramCache]: Analyzing trace with hash 825214944, now seen corresponding path program 1 times [2021-07-14 20:39:32,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:39:32,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535147941] [2021-07-14 20:39:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:39:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:39:32,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:39:32,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535147941] [2021-07-14 20:39:32,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535147941] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:39:32,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139828371] [2021-07-14 20:39:32,235 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 [2021-07-14 20:39:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:39:32,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-14 20:39:32,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:40:00,074 WARN L205 SmtUtils]: Spent 27.25 s on a formula simplification. DAG size of input: 51297 DAG size of output: 54 [2021-07-14 20:40:00,119 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:40:00,119 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 [2021-07-14 20:40:00,183 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 20:40:00,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:40:00,185 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 20:40:00,185 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:3 [2021-07-14 20:40:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:40:00,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139828371] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:40:00,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:40:00,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-07-14 20:40:00,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688273227] [2021-07-14 20:40:00,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 20:40:00,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:40:00,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 20:40:00,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-14 20:40:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:40:00,191 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:40:00,191 INFO L483 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) [2021-07-14 20:40:00,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:40:00,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:40:00,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:40:00,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:00,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:00,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:40:00,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:40:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:40:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:40:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:40:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:40:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:00,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-07-14 20:40:00,539 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:40:00,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:40:00,539 INFO L82 PathProgramCache]: Analyzing trace with hash 725379378, now seen corresponding path program 2 times [2021-07-14 20:40:00,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:40:00,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452831382] [2021-07-14 20:40:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:40:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:40:01,332 WARN L205 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-07-14 20:40:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:40:01,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:40:01,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452831382] [2021-07-14 20:40:01,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452831382] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:40:01,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971674596] [2021-07-14 20:40:01,358 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 [2021-07-14 20:40:01,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 20:40:01,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 20:40:01,387 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-14 20:40:01,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:40:01,796 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 19 [2021-07-14 20:40:01,940 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:40:01,941 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 [2021-07-14 20:40:02,258 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 20:40:02,260 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:40:02,260 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 20:40:02,260 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:3 [2021-07-14 20:40:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:40:02,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971674596] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:40:02,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:40:02,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-14 20:40:02,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148315097] [2021-07-14 20:40:02,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-14 20:40:02,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:40:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-14 20:40:02,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-07-14 20:40:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:40:02,268 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:40:02,268 INFO L483 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) [2021-07-14 20:40:02,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:40:02,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:40:02,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:40:02,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:02,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:02,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:40:02,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:02,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:40:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:40:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:40:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:40:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:40:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:02,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-07-14 20:40:02,642 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:40:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:40:02,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1925444128, now seen corresponding path program 3 times [2021-07-14 20:40:02,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:40:02,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768531860] [2021-07-14 20:40:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:40:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:40:03,604 WARN L205 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-07-14 20:40:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:40:03,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:40:03,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768531860] [2021-07-14 20:40:03,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768531860] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:40:03,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636465095] [2021-07-14 20:40:03,629 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 [2021-07-14 20:40:03,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 20:40:03,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 20:40:03,660 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 44 conjunts are in the unsatisfiable core [2021-07-14 20:40:03,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:40:04,102 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 20 [2021-07-14 20:40:04,175 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:40:04,176 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 [2021-07-14 20:40:04,749 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 20:40:04,750 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:40:04,750 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 20:40:04,751 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:3 [2021-07-14 20:40:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:40:04,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636465095] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:40:04,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:40:04,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-07-14 20:40:04,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5879839] [2021-07-14 20:40:04,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-14 20:40:04,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:40:04,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-14 20:40:04,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-07-14 20:40:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:40:04,759 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:40:04,759 INFO L483 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) [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:04,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:40:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 20:40:05,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 20:40:05,136 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:40:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:40:05,137 INFO L82 PathProgramCache]: Analyzing trace with hash 472745714, now seen corresponding path program 4 times [2021-07-14 20:40:05,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:40:05,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207000003] [2021-07-14 20:40:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:40:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:40:06,241 WARN L205 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 5508 DAG size of output: 14 [2021-07-14 20:40:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:40:06,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:40:06,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207000003] [2021-07-14 20:40:06,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207000003] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:40:06,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244108702] [2021-07-14 20:40:06,269 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 [2021-07-14 20:40:06,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 20:40:06,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 20:40:06,296 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-14 20:40:06,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 20:40:06,785 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 21 [2021-07-14 20:40:06,916 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-07-14 20:40:06,916 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:40:06,916 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 [2021-07-14 20:40:08,561 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 20:40:08,562 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 20:40:08,562 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 20:40:08,562 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:3 [2021-07-14 20:40:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:40:08,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244108702] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:40:08,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 20:40:08,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-07-14 20:40:08,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571562320] [2021-07-14 20:40:08,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-14 20:40:08,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 20:40:08,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-14 20:40:08,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-07-14 20:40:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:40:08,571 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 20:40:08,571 INFO L483 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) [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:08,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 20:40:08,572 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 20:40:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 20:40:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 20:40:08,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-07-14 20:40:08,933 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 20:40:08,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 20:40:08,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1611232160, now seen corresponding path program 5 times [2021-07-14 20:40:08,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 20:40:08,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526036259] [2021-07-14 20:40:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 20:40:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 20:40:09,876 WARN L205 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-07-14 20:40:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 20:40:09,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 20:40:09,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526036259] [2021-07-14 20:40:09,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526036259] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 20:40:09,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516842889] [2021-07-14 20:40:09,900 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 [2021-07-14 20:40:09,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 20:40:09,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 20:40:09,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-14 20:40:09,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown