/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-equiv.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 04:30:33,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 04:30:33,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 04:30:33,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 04:30:33,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Random42.epf [2021-06-14 04:30:33,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 04:30:33,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 04:30:33,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 04:30:33,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 04:30:33,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 04:30:33,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 04:30:33,263 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 04:30:33,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 04:30:33,263 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 04:30:33,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 04:30:33,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 04:30:33,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 04:30:33,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 04:30:33,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 04:30:33,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 04:30:33,265 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 04:30:33,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 04:30:33,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 04:30:33,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 04:30:33,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 04:30:33,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 04:30:33,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 04:30:33,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 04:30:33,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 04:30:33,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 04:30:33,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 04:30:33,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 04:30:33,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 04:30:33,267 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-14 04:30:33,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 04:30:33,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 04:30:33,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 04:30:33,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 04:30:33,268 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-14 04:30:33,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-14 04:30:33,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 04:30:33,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 04:30:33,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 04:30:33,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 04:30:33,636 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 04:30:33,637 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 04:30:33,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-equiv.wvr.bpl [2021-06-14 04:30:33,638 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-equiv.wvr.bpl' [2021-06-14 04:30:33,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 04:30:33,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 04:30:33,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 04:30:33,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 04:30:33,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 04:30:33,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 04:30:33,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 04:30:33,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 04:30:33,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 04:30:33,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... [2021-06-14 04:30:33,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 04:30:33,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 04:30:33,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 04:30:33,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 04:30:33,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 04:30:33,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 04:30:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 04:30:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 04:30:33,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 04:30:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 04:30:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 04:30:33,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 04:30:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 04:30:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 04:30:33,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 04:30:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 04:30:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 04:30:33,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-14 04:30:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-14 04:30:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-14 04:30:33,801 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 04:30:34,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 04:30:34,107 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-06-14 04:30:34,108 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2021-06-14 04:30:34,108 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2021-06-14 04:30:34,109 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread4EXIT is neither atomic block end nor error location. [2021-06-14 04:30:34,110 INFO L202 PluginConnector]: Adding new model parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 04:30:34 BoogieIcfgContainer [2021-06-14 04:30:34,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 04:30:34,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 04:30:34,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 04:30:34,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 04:30:34,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 04:30:33" (1/2) ... [2021-06-14 04:30:34,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec26482 and model type parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 04:30:34, skipping insertion in model container [2021-06-14 04:30:34,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 04:30:34" (2/2) ... [2021-06-14 04:30:34,116 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-sum-equiv.wvr.bpl [2021-06-14 04:30:34,141 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 04:30:34,141 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 04:30:34,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 04:30:34,142 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 04:30:34,258 INFO L149 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2021-06-14 04:30:34,281 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-14 04:30:34,357 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 04:30:34,358 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 04:30:34,358 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 04:30:34,358 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 04:30:34,358 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 04:30:34,358 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 04:30:34,358 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 04:30:34,358 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1======== [2021-06-14 04:30:34,557 INFO L301 ceAbstractionStarter]: Result for error location thread1 was SAFE (1/3) [2021-06-14 04:30:34,558 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-14 04:30:34,568 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 04:30:34,568 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 04:30:34,568 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 04:30:34,568 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 04:30:34,568 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 04:30:34,568 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 04:30:34,568 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 04:30:34,568 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1Thread1of1ForFork0======== [2021-06-14 04:30:34,626 INFO L301 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork0 was SAFE (2/3) [2021-06-14 04:30:34,627 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-14 04:30:34,637 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 04:30:34,637 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 04:30:34,637 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 04:30:34,637 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 04:30:34,637 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 04:30:34,637 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 04:30:34,638 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 04:30:34,638 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 04:30:34,644 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-14 04:30:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 04:30:34,648 INFO L82 PathProgramCache]: Analyzing trace with hash -223656517, now seen corresponding path program 1 times [2021-06-14 04:30:34,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 04:30:34,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675620764] [2021-06-14 04:30:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 04:30:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 04:30:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:34,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 04:30:34,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675620764] [2021-06-14 04:30:34,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675620764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:34,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069360882] [2021-06-14 04:30:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 04:30:35,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-14 04:30:35,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 04:30:35,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-14 04:30:35,263 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-14 04:30:35,266 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 04:30:35,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 04:30:35,286 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 04:30:35,287 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:13 [2021-06-14 04:30:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:35,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069360882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:35,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 04:30:35,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2021-06-14 04:30:35,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010095346] [2021-06-14 04:30:35,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-14 04:30:35,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 04:30:35,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-14 04:30:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-14 04:30:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:35,416 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 04:30:35,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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) [2021-06-14 04:30:35,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:35,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:35,969 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-14 04:30:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 04:30:35,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1680501501, now seen corresponding path program 2 times [2021-06-14 04:30:35,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 04:30:35,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143534237] [2021-06-14 04:30:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 04:30:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 04:30:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:36,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 04:30:36,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143534237] [2021-06-14 04:30:36,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143534237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:36,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588387288] [2021-06-14 04:30:36,023 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:36,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 04:30:36,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 04:30:36,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-14 04:30:36,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 04:30:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:36,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588387288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:36,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 04:30:36,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-14 04:30:36,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547565214] [2021-06-14 04:30:36,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-14 04:30:36,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 04:30:36,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-14 04:30:36,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-14 04:30:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:36,155 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 04:30:36,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 04:30:36,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:36,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:36,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:36,449 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-14 04:30:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 04:30:36,449 INFO L82 PathProgramCache]: Analyzing trace with hash -782961669, now seen corresponding path program 3 times [2021-06-14 04:30:36,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 04:30:36,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889946595] [2021-06-14 04:30:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 04:30:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 04:30:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:36,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 04:30:36,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889946595] [2021-06-14 04:30:36,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889946595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:36,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988610485] [2021-06-14 04:30:36,546 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:36,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-14 04:30:36,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 04:30:36,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-14 04:30:36,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 04:30:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:36,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988610485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:36,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 04:30:36,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-14 04:30:36,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904189164] [2021-06-14 04:30:36,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-14 04:30:36,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 04:30:36,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-14 04:30:36,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-14 04:30:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:36,760 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 04:30:36,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 04:30:36,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:36,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:36,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 04:30:37,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:37,065 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-14 04:30:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 04:30:37,065 INFO L82 PathProgramCache]: Analyzing trace with hash -780165187, now seen corresponding path program 4 times [2021-06-14 04:30:37,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 04:30:37,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907922953] [2021-06-14 04:30:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 04:30:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 04:30:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:37,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 04:30:37,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907922953] [2021-06-14 04:30:37,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907922953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:37,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599495730] [2021-06-14 04:30:37,599 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:37,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 04:30:37,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 04:30:37,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 45 conjunts are in the unsatisfiable core [2021-06-14 04:30:37,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 04:30:38,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-06-14 04:30:38,014 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 04:30:38,016 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 04:30:38,016 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 04:30:38,017 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2021-06-14 04:30:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:38,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599495730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:38,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 04:30:38,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 31 [2021-06-14 04:30:38,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234804134] [2021-06-14 04:30:38,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-14 04:30:38,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 04:30:38,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-14 04:30:38,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2021-06-14 04:30:38,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:38,067 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 04:30:38,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 04:30:38,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:38,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:38,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 04:30:38,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:39,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 04:30:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-14 04:30:39,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:39,689 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-14 04:30:39,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 04:30:39,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1288334169, now seen corresponding path program 1 times [2021-06-14 04:30:39,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 04:30:39,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040527745] [2021-06-14 04:30:39,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 04:30:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 04:30:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-06-14 04:30:39,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 04:30:39,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040527745] [2021-06-14 04:30:39,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040527745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 04:30:39,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 04:30:39,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 04:30:39,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469116141] [2021-06-14 04:30:39,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 04:30:39,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 04:30:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 04:30:39,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 04:30:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:39,717 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 04:30:39,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 04:30:39,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:39,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:39,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 04:30:39,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-14 04:30:39,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 04:30:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-14 04:30:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 04:30:39,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-14 04:30:39,761 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-14 04:30:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 04:30:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash 182140126, now seen corresponding path program 5 times [2021-06-14 04:30:39,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 04:30:39,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400322122] [2021-06-14 04:30:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 04:30:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 04:30:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:40,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 04:30:40,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400322122] [2021-06-14 04:30:40,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400322122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:40,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049557466] [2021-06-14 04:30:40,361 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:40,395 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-14 04:30:40,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 04:30:40,396 WARN L261 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 57 conjunts are in the unsatisfiable core [2021-06-14 04:30:40,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 04:30:40,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-06-14 04:30:40,938 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 04:30:40,939 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 04:30:40,939 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 04:30:40,939 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:7 [2021-06-14 04:30:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:40,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049557466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:40,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 04:30:40,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 39 [2021-06-14 04:30:40,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495587830] [2021-06-14 04:30:40,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-14 04:30:40,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 04:30:41,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-14 04:30:41,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2021-06-14 04:30:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:41,002 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 04:30:41,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 04:30:41,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:41,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:41,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 04:30:41,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-14 04:30:41,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 04:30:41,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 04:30:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 04:30:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-14 04:30:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 04:30:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-14 04:30:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 04:30:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-14 04:30:42,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-14 04:30:42,818 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-14 04:30:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 04:30:42,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1415898303, now seen corresponding path program 6 times [2021-06-14 04:30:42,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 04:30:42,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252213047] [2021-06-14 04:30:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 04:30:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 04:30:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 04:30:43,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 04:30:43,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252213047] [2021-06-14 04:30:43,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252213047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 04:30:43,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722436152] [2021-06-14 04:30:43,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 04:30:43,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-14 04:30:43,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 04:30:43,553 WARN L261 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 69 conjunts are in the unsatisfiable core [2021-06-14 04:30:43,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 04:30:44,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 04:30:44,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 04:30:44,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 04:30:44,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 04:30:44,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 43 treesize of output 157 [2021-06-14 04:30:44,928 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 243 [2021-06-14 04:30:45,102 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 266 [2021-06-14 04:30:45,780 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 790 DAG size of output: 678 [2021-06-14 04:30:46,005 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 790 DAG size of output: 678 [2021-06-14 04:30:46,241 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 796 DAG size of output: 684 [2021-06-14 04:30:46,731 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 480 DAG size of output: 389 [2021-06-14 04:30:46,978 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 641 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown