/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-Sleep-NoLbe-New_States.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-20 01:11:35,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-20 01:11:35,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-20 01:11:35,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-20 01:11:35,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-20 01:11:35,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-20 01:11:35,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-20 01:11:35,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-20 01:11:35,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-20 01:11:35,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-20 01:11:35,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-20 01:11:35,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-20 01:11:35,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-20 01:11:35,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-20 01:11:35,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-20 01:11:35,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-20 01:11:35,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-20 01:11:35,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-20 01:11:35,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-20 01:11:35,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-20 01:11:35,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-20 01:11:35,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-20 01:11:35,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-20 01:11:35,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-20 01:11:35,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-20 01:11:35,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-20 01:11:35,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-20 01:11:35,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-20 01:11:35,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-20 01:11:35,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-20 01:11:35,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-20 01:11:35,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-20 01:11:35,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-20 01:11:35,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-20 01:11:35,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-20 01:11:35,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-20 01:11:35,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-20 01:11:35,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-20 01:11:35,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-20 01:11:35,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-20 01:11:35,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-20 01:11:35,819 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-Sleep-NoLbe-New_States.epf [2021-02-20 01:11:35,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-20 01:11:35,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-20 01:11:35,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-20 01:11:35,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-20 01:11:35,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * Use SBE=true [2021-02-20 01:11:35,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-20 01:11:35,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-20 01:11:35,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-20 01:11:35,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-20 01:11:35,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-20 01:11:35,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-20 01:11:35,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-20 01:11:35,839 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-20 01:11:35,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-02-20 01:11:35,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-20 01:11:35,839 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-02-20 01:11:35,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-20 01:11:36,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-20 01:11:36,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-20 01:11:36,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-20 01:11:36,190 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-20 01:11:36,195 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-20 01:11:36,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl [2021-02-20 01:11:36,196 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl' [2021-02-20 01:11:36,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-20 01:11:36,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-20 01:11:36,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-20 01:11:36,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-20 01:11:36,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-20 01:11:36,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-20 01:11:36,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-20 01:11:36,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-20 01:11:36,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-20 01:11:36,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/1) ... [2021-02-20 01:11:36,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-20 01:11:36,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-20 01:11:36,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-20 01:11:36,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-20 01:11:36,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (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 [2021-02-20 01:11:36,326 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-20 01:11:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-20 01:11:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-20 01:11:36,327 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-20 01:11:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-20 01:11:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-20 01:11:36,327 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-20 01:11:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-20 01:11:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-20 01:11:36,328 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-20 01:11:36,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-20 01:11:36,481 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-20 01:11:36,483 INFO L202 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 01:11:36 BoogieIcfgContainer [2021-02-20 01:11:36,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-20 01:11:36,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-20 01:11:36,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-20 01:11:36,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-20 01:11:36,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 01:11:36" (1/2) ... [2021-02-20 01:11:36,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@896f2ce and model type dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 01:11:36, skipping insertion in model container [2021-02-20 01:11:36,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 01:11:36" (2/2) ... [2021-02-20 01:11:36,489 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq.wvr.bpl [2021-02-20 01:11:36,494 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-20 01:11:36,494 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-20 01:11:36,505 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-20 01:11:36,506 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-20 01:11:36,538 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-02-20 01:11:36,568 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-02-20 01:11:36,629 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-20 01:11:36,630 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-20 01:11:36,630 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-20 01:11:36,630 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-20 01:11:36,630 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-20 01:11:36,630 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-20 01:11:36,630 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-20 01:11:36,630 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-02-20 01:11:36,768 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 01:11:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 01:11:36,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1894711280, now seen corresponding path program 1 times [2021-02-20 01:11:36,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 01:11:36,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495595551] [2021-02-20 01:11:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 01:11:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 01:11:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-20 01:11:36,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495595551] [2021-02-20 01:11:36,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-20 01:11:36,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-20 01:11:36,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860775817] [2021-02-20 01:11:36,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-20 01:11:36,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 01:11:36,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-20 01:11:36,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-20 01:11:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 01:11:36,991 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 01:11:36,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-02-20 01:11:36,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 01:11:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-20 01:11:37,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-20 01:11:37,134 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 01:11:37,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 01:11:37,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1887300840, now seen corresponding path program 2 times [2021-02-20 01:11:37,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 01:11:37,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252824070] [2021-02-20 01:11:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 01:11:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 01:11:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 01:11:37,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252824070] [2021-02-20 01:11:37,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042220057] [2021-02-20 01:11:37,266 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 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 [2021-02-20 01:11:37,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-20 01:11:37,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-20 01:11:37,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-20 01:11:37,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-20 01:11:37,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-02-20 01:11:37,482 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-20 01:11:37,487 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-20 01:11:37,495 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-20 01:11:37,496 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2021-02-20 01:11:37,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-02-20 01:11:37,548 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-20 01:11:37,551 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-20 01:11:37,553 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-20 01:11:37,553 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2021-02-20 01:11:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 01:11:37,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-20 01:11:37,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-02-20 01:11:37,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457030075] [2021-02-20 01:11:37,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-20 01:11:37,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 01:11:37,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-20 01:11:37,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-02-20 01:11:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 01:11:37,574 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 01:11:37,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 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) [2021-02-20 01:11:37,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-20 01:11:37,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 01:11:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-20 01:11:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-20 01:11:37,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-20 01:11:37,944 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 01:11:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 01:11:37,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1253001959, now seen corresponding path program 1 times [2021-02-20 01:11:37,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 01:11:37,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303405908] [2021-02-20 01:11:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 01:11:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 01:11:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-20 01:11:38,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303405908] [2021-02-20 01:11:38,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500739061] [2021-02-20 01:11:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-02-20 01:11:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 01:11:38,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 35 conjunts are in the unsatisfiable core [2021-02-20 01:11:38,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-20 01:11:39,376 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-20 01:11:39,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 52 [2021-02-20 01:11:39,400 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-20 01:11:39,444 INFO L628 ElimStorePlain]: treesize reduction 47, result has 60.8 percent of original size [2021-02-20 01:11:39,456 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-20 01:11:39,456 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:60, output treesize:41 [2021-02-20 01:11:40,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-20 01:11:40,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-20 01:11:40,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-20 01:11:40,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-02-20 01:11:40,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-20 01:11:40,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-20 01:11:40,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-02-20 01:11:40,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2021-02-20 01:11:40,150 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-20 01:11:40,155 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-20 01:11:40,158 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-20 01:11:40,159 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:5 [2021-02-20 01:11:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 01:11:40,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-20 01:11:40,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 35 [2021-02-20 01:11:40,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882302064] [2021-02-20 01:11:40,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-20 01:11:40,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 01:11:40,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-20 01:11:40,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2021-02-20 01:11:40,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 01:11:40,192 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 01:11:40,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 35 states have internal predecessors, (76), 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) [2021-02-20 01:11:40,193 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-20 01:11:40,193 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-02-20 01:11:40,193 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 01:11:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-20 01:11:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-20 01:11:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-20 01:11:41,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-20 01:11:41,226 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 01:11:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 01:11:41,227 INFO L82 PathProgramCache]: Analyzing trace with hash -664685867, now seen corresponding path program 2 times [2021-02-20 01:11:41,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 01:11:41,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679695798] [2021-02-20 01:11:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 01:11:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 01:11:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 38 proven. 57 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-02-20 01:11:41,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679695798] [2021-02-20 01:11:41,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564104014] [2021-02-20 01:11:41,321 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 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 [2021-02-20 01:11:41,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-20 01:11:41,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-20 01:11:41,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-20 01:11:41,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-20 01:11:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 55 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-02-20 01:11:41,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-20 01:11:41,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-02-20 01:11:41,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354128134] [2021-02-20 01:11:41,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-20 01:11:41,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 01:11:41,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-20 01:11:41,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-02-20 01:11:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 01:11:41,520 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 01:11:41,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-02-20 01:11:41,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-02-20 01:11:41,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-02-20 01:11:41,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-02-20 01:11:41,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 01:11:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-20 01:11:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-20 01:11:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-20 01:11:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-20 01:11:41,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-20 01:11:41,807 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 01:11:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 01:11:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1949178180, now seen corresponding path program 3 times [2021-02-20 01:11:41,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 01:11:41,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057969008] [2021-02-20 01:11:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 01:11:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 01:11:42,635 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-02-20 01:11:42,910 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-02-20 01:11:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 277 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-20 01:11:44,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057969008] [2021-02-20 01:11:44,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379095074] [2021-02-20 01:11:44,079 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 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 [2021-02-20 01:11:44,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-02-20 01:11:44,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-20 01:11:44,185 WARN L261 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 97 conjunts are in the unsatisfiable core [2021-02-20 01:11:44,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-20 01:11:48,010 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-20 01:11:48,316 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-02-20 01:11:48,759 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-02-20 01:11:52,452 WARN L202 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 101 [2021-02-20 01:11:54,204 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-20 01:11:55,526 WARN L202 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-20 01:11:57,261 WARN L202 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-20 01:12:03,044 WARN L202 SmtUtils]: Spent 3.34 s on a formula simplification that was a NOOP. DAG size: 108 [2021-02-20 01:12:13,959 WARN L202 SmtUtils]: Spent 3.41 s on a formula simplification that was a NOOP. DAG size: 116 [2021-02-20 01:12:29,480 WARN L202 SmtUtils]: Spent 7.66 s on a formula simplification that was a NOOP. DAG size: 117 [2021-02-20 01:12:44,287 WARN L202 SmtUtils]: Spent 10.46 s on a formula simplification that was a NOOP. DAG size: 121 [2021-02-20 01:13:45,898 WARN L202 SmtUtils]: Spent 41.52 s on a formula simplification that was a NOOP. DAG size: 123 [2021-02-20 01:14:54,229 WARN L202 SmtUtils]: Spent 43.35 s on a formula simplification that was a NOOP. DAG size: 131 [2021-02-20 01:17:07,574 WARN L202 SmtUtils]: Spent 1.75 m on a formula simplification that was a NOOP. DAG size: 132 [2021-02-20 01:19:30,658 WARN L202 SmtUtils]: Spent 2.03 m on a formula simplification that was a NOOP. DAG size: 136 [2021-02-20 01:20:11,660 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-02-20 01:20:11,662 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2021-02-20 01:20:11,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-02-20 01:20:11,863 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) 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.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:170) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) 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:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) 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.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 51 more [2021-02-20 01:20:11,871 INFO L168 Benchmark]: Toolchain (without parser) took 515647.09 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 328.0 MB in the beginning and 280.9 MB in the end (delta: 47.1 MB). Peak memory consumption was 121.0 MB. Max. memory is 16.0 GB. [2021-02-20 01:20:11,873 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 329.1 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-20 01:20:11,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.97 ms. Allocated memory is still 348.1 MB. Free memory was 327.4 MB in the beginning and 326.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-20 01:20:11,874 INFO L168 Benchmark]: Boogie Preprocessor took 14.47 ms. Allocated memory is still 348.1 MB. Free memory was 326.1 MB in the beginning and 325.1 MB in the end (delta: 978.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-20 01:20:11,875 INFO L168 Benchmark]: RCFGBuilder took 211.42 ms. Allocated memory is still 348.1 MB. Free memory was 325.0 MB in the beginning and 312.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-02-20 01:20:11,875 INFO L168 Benchmark]: TraceAbstraction took 515386.35 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 312.0 MB in the beginning and 280.9 MB in the end (delta: 31.1 MB). Peak memory consumption was 104.3 MB. Max. memory is 16.0 GB. [2021-02-20 01:20:11,875 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 0.23 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 329.1 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.97 ms. Allocated memory is still 348.1 MB. Free memory was 327.4 MB in the beginning and 326.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.47 ms. Allocated memory is still 348.1 MB. Free memory was 326.1 MB in the beginning and 325.1 MB in the end (delta: 978.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 211.42 ms. Allocated memory is still 348.1 MB. Free memory was 325.0 MB in the beginning and 312.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 515386.35 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 312.0 MB in the beginning and 280.9 MB in the end (delta: 31.1 MB). Peak memory consumption was 104.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...