/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-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 06:14:42,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 06:14:42,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 06:14:42,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 06:14:42,409 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-Lockstep.epf [2021-07-14 06:14:42,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 06:14:42,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 06:14:42,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 06:14:42,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 06:14:42,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 06:14:42,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 06:14:42,450 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 06:14:42,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 06:14:42,451 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 06:14:42,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 06:14:42,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 06:14:42,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 06:14:42,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 06:14:42,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 06:14:42,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 06:14:42,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 06:14:42,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 06:14:42,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 06:14:42,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 06:14:42,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 06:14:42,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 06:14:42,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 06:14:42,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 06:14:42,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 06:14:42,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 06:14:42,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 06:14:42,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 06:14:42,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 06:14:42,454 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 06:14:42,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 06:14:42,454 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 06:14:42,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 06:14:42,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 06:14:42,455 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-14 06:14:42,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 06:14:42,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 06:14:42,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 06:14:42,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 06:14:42,798 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 06:14:42,800 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 06:14:42,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl [2021-07-14 06:14:42,801 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl' [2021-07-14 06:14:42,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 06:14:42,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 06:14:42,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 06:14:42,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 06:14:42,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 06:14:42,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 06:14:42,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 06:14:42,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 06:14:42,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 06:14:42,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/1) ... [2021-07-14 06:14:42,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 06:14:42,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 06:14:42,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 06:14:42,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 06:14:42,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (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 06:14:42,971 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 06:14:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 06:14:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 06:14:42,971 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 06:14:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 06:14:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 06:14:42,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 06:14:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 06:14:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 06:14:42,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 06:14:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 06:14:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 06:14:42,973 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-14 06:14:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-14 06:14:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-14 06:14:42,974 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 06:14:43,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 06:14:43,193 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 06:14:43,195 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:14:43 BoogieIcfgContainer [2021-07-14 06:14:43,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 06:14:43,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 06:14:43,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 06:14:43,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 06:14:43,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:14:42" (1/2) ... [2021-07-14 06:14:43,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f0c0ca and model type exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:14:43, skipping insertion in model container [2021-07-14 06:14:43,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:14:43" (2/2) ... [2021-07-14 06:14:43,202 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x6.wvr.bpl [2021-07-14 06:14:43,207 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 06:14:43,208 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 06:14:43,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 06:14:43,208 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 06:14:43,255 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-14 06:14:43,276 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 06:14:43,347 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 06:14:43,347 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 06:14:43,348 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 06:14:43,348 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 06:14:43,348 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 06:14:43,348 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 06:14:43,348 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 06:14:43,348 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 06:14:43,616 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:14:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:14:43,626 INFO L82 PathProgramCache]: Analyzing trace with hash 704788102, now seen corresponding path program 1 times [2021-07-14 06:14:43,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:14:43,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045285961] [2021-07-14 06:14:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:14:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:14:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 55 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-07-14 06:14:44,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:14:44,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045285961] [2021-07-14 06:14:44,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045285961] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:14:44,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558473637] [2021-07-14 06:14:44,011 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 06:14:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:14:44,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 06:14:44,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:14:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 55 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-07-14 06:14:44,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558473637] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:14:44,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:14:44,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 13 [2021-07-14 06:14:44,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321667161] [2021-07-14 06:14:44,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-14 06:14:44,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:14:44,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-14 06:14:44,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-07-14 06:14:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:14:44,795 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:14:44,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 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 06:14:44,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:14:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-14 06:14:45,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 06:14:45,945 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:14:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:14:45,945 INFO L82 PathProgramCache]: Analyzing trace with hash -969130249, now seen corresponding path program 2 times [2021-07-14 06:14:45,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:14:45,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852871989] [2021-07-14 06:14:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:14:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:14:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:14:46,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:14:46,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852871989] [2021-07-14 06:14:46,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852871989] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:14:46,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090917306] [2021-07-14 06:14:46,246 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 06:14:46,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 06:14:46,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:14:46,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 06:14:46,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:14:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-07-14 06:14:46,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090917306] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:14:46,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:14:46,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2021-07-14 06:14:46,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570505054] [2021-07-14 06:14:46,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-07-14 06:14:46,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:14:46,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-07-14 06:14:46,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-07-14 06:14:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:14:46,893 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:14:46,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 25 states have internal predecessors, (118), 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 06:14:46,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-14 06:14:46,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:14:49,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-14 06:14:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-14 06:14:49,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:14:49,365 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:14:49,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:14:49,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1386426647, now seen corresponding path program 3 times [2021-07-14 06:14:49,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:14:49,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275826161] [2021-07-14 06:14:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:14:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:14:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 118 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-07-14 06:14:49,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:14:49,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275826161] [2021-07-14 06:14:49,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275826161] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:14:49,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205950419] [2021-07-14 06:14:49,705 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 06:14:49,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 06:14:49,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:14:49,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-14 06:14:49,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:14:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 102 proven. 9 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-07-14 06:14:51,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205950419] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:14:51,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:14:51,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 41 [2021-07-14 06:14:51,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995000299] [2021-07-14 06:14:51,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-07-14 06:14:51,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:14:51,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-07-14 06:14:51,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2021-07-14 06:14:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:14:51,313 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:14:51,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 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 06:14:51,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-14 06:14:51,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-07-14 06:14:51,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:15:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-14 06:15:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-14 06:15:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-07-14 06:15:06,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:15:06,421 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:15:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:15:06,421 INFO L82 PathProgramCache]: Analyzing trace with hash 334305004, now seen corresponding path program 4 times [2021-07-14 06:15:06,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:15:06,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455729688] [2021-07-14 06:15:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:15:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:15:06,587 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 26 proven. 48 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-07-14 06:15:06,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:15:06,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455729688] [2021-07-14 06:15:06,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455729688] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:15:06,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308863027] [2021-07-14 06:15:06,593 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 06:15:06,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 06:15:06,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:15:06,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 43 conjunts are in the unsatisfiable core [2021-07-14 06:15:06,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:15:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 102 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:15:12,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308863027] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:15:12,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:15:12,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 43] total 47 [2021-07-14 06:15:12,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126969556] [2021-07-14 06:15:12,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-07-14 06:15:12,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:15:12,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-07-14 06:15:12,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1930, Unknown=0, NotChecked=0, Total=2256 [2021-07-14 06:15:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:15:12,870 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:15:12,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.625) internal successors, (126), 47 states have internal predecessors, (126), 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 06:15:12,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-14 06:15:12,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2021-07-14 06:15:12,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 88 states. [2021-07-14 06:15:12,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:16:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-14 06:16:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-14 06:16:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-07-14 06:16:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-14 06:16:08,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:16:08,833 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:16:08,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:16:08,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1658058884, now seen corresponding path program 5 times [2021-07-14 06:16:08,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:16:08,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798929674] [2021-07-14 06:16:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:16:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:16:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-07-14 06:16:09,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:16:09,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798929674] [2021-07-14 06:16:09,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798929674] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:16:09,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258446151] [2021-07-14 06:16:09,244 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 06:16:09,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-14 06:16:09,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:16:09,317 WARN L261 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 149 conjunts are in the unsatisfiable core [2021-07-14 06:16:09,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:16:13,186 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-07-14 06:16:15,136 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-07-14 06:16:16,246 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-07-14 06:16:17,565 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-07-14 06:16:19,348 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-07-14 06:16:20,851 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-07-14 06:16:24,478 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-07-14 06:16:26,506 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-07-14 06:16:30,774 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-07-14 06:16:33,060 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2021-07-14 06:16:35,850 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2021-07-14 06:16:40,227 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-07-14 06:16:48,499 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-07-14 06:16:51,939 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-07-14 06:16:59,179 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2021-07-14 06:17:07,102 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-07-14 06:17:25,497 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-07-14 06:17:39,267 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2021-07-14 06:17:52,574 WARN L205 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2021-07-14 06:18:07,794 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2021-07-14 06:18:36,251 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2021-07-14 06:19:02,952 WARN L205 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2021-07-14 06:19:41,157 WARN L205 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-07-14 06:20:06,737 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2021-07-14 06:20:46,867 WARN L205 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2021-07-14 06:21:15,671 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2021-07-14 06:21:47,991 WARN L205 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-07-14 06:22:14,986 WARN L205 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 268 [2021-07-14 06:22:19,867 WARN L205 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 271 [2021-07-14 06:22:29,210 WARN L205 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 274 [2021-07-14 06:22:43,923 WARN L205 SmtUtils]: Spent 4.66 s on a formula simplification that was a NOOP. DAG size: 277 [2021-07-14 06:22:56,477 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2021-07-14 06:23:05,253 WARN L205 SmtUtils]: Spent 4.62 s on a formula simplification that was a NOOP. DAG size: 286 [2021-07-14 06:23:21,278 WARN L205 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 293 [2021-07-14 06:23:27,927 WARN L205 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 296 [2021-07-14 06:23:36,858 WARN L205 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 299 [2021-07-14 06:23:54,976 WARN L205 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 305 [2021-07-14 06:24:06,095 WARN L205 SmtUtils]: Spent 2.49 s on a formula simplification that was a NOOP. DAG size: 308 [2021-07-14 06:24:09,564 WARN L205 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2021-07-14 06:24:19,348 WARN L205 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 325 [2021-07-14 06:24:30,831 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2021-07-14 06:24:47,824 WARN L205 SmtUtils]: Spent 2.68 s on a formula simplification that was a NOOP. DAG size: 335 [2021-07-14 06:25:02,090 WARN L205 SmtUtils]: Spent 2.53 s on a formula simplification that was a NOOP. DAG size: 341 [2021-07-14 06:25:08,763 WARN L205 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2021-07-14 06:25:24,551 WARN L205 SmtUtils]: Spent 4.69 s on a formula simplification that was a NOOP. DAG size: 347 [2021-07-14 06:25:33,139 WARN L205 SmtUtils]: Spent 2.87 s on a formula simplification that was a NOOP. DAG size: 355 [2021-07-14 06:25:49,687 WARN L205 SmtUtils]: Spent 2.54 s on a formula simplification that was a NOOP. DAG size: 358 [2021-07-14 06:26:02,117 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-07-14 06:26:02,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:26:02,318 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Possible infinite loop detected aux_div_aux_div_aux_mod_x2_24_53_171 already exists at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:408) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:312) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:328) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:231) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:182) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:149) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminate(DualJunctionDer.java:127) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:869) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:835) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:753) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:384) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$LiveVariablesPostprocessorForward.postprocess(TraceCheckSpWp.java:539) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:597) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-07-14 06:26:02,322 INFO L168 Benchmark]: Toolchain (without parser) took 679483.38 ms. Allocated memory was 185.6 MB in the beginning and 798.0 MB in the end (delta: 612.4 MB). Free memory was 165.7 MB in the beginning and 441.6 MB in the end (delta: -275.9 MB). Peak memory consumption was 549.4 MB. Max. memory is 8.0 GB. [2021-07-14 06:26:02,322 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 185.6 MB. Free memory is still 166.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 06:26:02,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.43 ms. Allocated memory is still 185.6 MB. Free memory was 165.6 MB in the beginning and 164.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 06:26:02,322 INFO L168 Benchmark]: Boogie Preprocessor took 16.34 ms. Allocated memory is still 185.6 MB. Free memory was 164.2 MB in the beginning and 163.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 06:26:02,323 INFO L168 Benchmark]: RCFGBuilder took 306.05 ms. Allocated memory is still 185.6 MB. Free memory was 163.1 MB in the beginning and 150.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-14 06:26:02,323 INFO L168 Benchmark]: TraceAbstraction took 679124.62 ms. Allocated memory was 185.6 MB in the beginning and 798.0 MB in the end (delta: 612.4 MB). Free memory was 150.0 MB in the beginning and 441.6 MB in the end (delta: -291.6 MB). Peak memory consumption was 533.6 MB. Max. memory is 8.0 GB. [2021-07-14 06:26:02,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 185.6 MB. Free memory is still 166.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.43 ms. Allocated memory is still 185.6 MB. Free memory was 165.6 MB in the beginning and 164.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.34 ms. Allocated memory is still 185.6 MB. Free memory was 164.2 MB in the beginning and 163.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 306.05 ms. Allocated memory is still 185.6 MB. Free memory was 163.1 MB in the beginning and 150.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 679124.62 ms. Allocated memory was 185.6 MB in the beginning and 798.0 MB in the end (delta: 612.4 MB). Free memory was 150.0 MB in the beginning and 441.6 MB in the end (delta: -291.6 MB). Peak memory consumption was 533.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Possible infinite loop detected aux_div_aux_div_aux_mod_x2_24_53_171 already exists de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Possible infinite loop detected aux_div_aux_div_aux_mod_x2_24_53_171 already exists: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:198) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...