/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/parallel/misc-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 06:26:25,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 06:26:25,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 06:26:25,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-14 06:26:25,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-14 06:26:25,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-14 06:26:25,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-14 06:26:25,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-14 06:26:25,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-14 06:26:25,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-14 06:26:25,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-14 06:26:25,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-14 06:26:25,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 06:26:25,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 06:26:25,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 06:26:25,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 06:26:25,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 06:26:25,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 06:26:25,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 06:26:25,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 06:26:25,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 06:26:25,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 06:26:25,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 06:26:25,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 06:26:25,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-14 06:26:25,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-14 06:26:25,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-14 06:26:25,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-14 06:26:25,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-14 06:26:25,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-14 06:26:25,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-14 06:26:25,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-14 06:26:25,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-14 06:26:25,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-14 06:26:25,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-14 06:26:25,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-14 06:26:25,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-14 06:26:25,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-14 06:26:25,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 06:26:25,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 06:26:25,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 06:26:25,479 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 06:26:25,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 06:26:25,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 06:26:25,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 06:26:25,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 06:26:25,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 06:26:25,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 06:26:25,524 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 06:26:25,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 06:26:25,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 06:26:25,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 06:26:25,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 06:26:25,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 06:26:25,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 06:26:25,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 06:26:25,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 06:26:25,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 06:26:25,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 06:26:25,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 06:26:25,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 06:26:25,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 06:26:25,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 06:26:25,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 06:26:25,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 06:26:25,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 06:26:25,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 06:26:25,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 06:26:25,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 06:26:25,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 06:26:25,537 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 06:26:25,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 06:26:25,538 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 06:26:25,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 06:26:25,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 06:26:25,538 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-14 06:26:25,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 06:26:25,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 06:26:25,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 06:26:25,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 06:26:25,893 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 06:26:25,894 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 06:26:25,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl [2021-07-14 06:26:25,895 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl' [2021-07-14 06:26:25,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 06:26:25,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 06:26:25,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 06:26:25,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 06:26:25,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 06:26:25,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 06:26:25,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 06:26:25,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 06:26:25,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 06:26:25,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/1) ... [2021-07-14 06:26:25,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 06:26:25,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 06:26:25,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 06:26:25,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 06:26:25,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (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 06:26:26,043 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 06:26:26,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 06:26:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 06:26:26,043 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 06:26:26,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 06:26:26,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 06:26:26,044 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 06:26:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 06:26:26,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 06:26:26,045 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 06:26:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 06:26:26,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 06:26:26,046 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 06:26:26,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 06:26:26,229 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 06:26:26,230 INFO L202 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:26:26 BoogieIcfgContainer [2021-07-14 06:26:26,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 06:26:26,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 06:26:26,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 06:26:26,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 06:26:26,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:26:25" (1/2) ... [2021-07-14 06:26:26,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f944046 and model type misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:26:26, skipping insertion in model container [2021-07-14 06:26:26,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:26:26" (2/2) ... [2021-07-14 06:26:26,237 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-4.wvr.bpl [2021-07-14 06:26:26,241 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 06:26:26,241 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 06:26:26,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 06:26:26,242 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 06:26:26,306 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 06:26:26,342 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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 06:26:26,421 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 06:26:26,421 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 06:26:26,421 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 06:26:26,421 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 06:26:26,422 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 06:26:26,422 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 06:26:26,422 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 06:26:26,422 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 06:26:26,553 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:26:26,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:26:26,560 INFO L82 PathProgramCache]: Analyzing trace with hash -49543260, now seen corresponding path program 1 times [2021-07-14 06:26:26,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:26:26,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513241637] [2021-07-14 06:26:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:26:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:26:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-14 06:26:26,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:26:26,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513241637] [2021-07-14 06:26:26,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513241637] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:26:26,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420790908] [2021-07-14 06:26:26,739 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 06:26:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:26:26,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-14 06:26:26,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:26:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-14 06:26:26,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420790908] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 06:26:26,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-14 06:26:26,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-07-14 06:26:26,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431518781] [2021-07-14 06:26:26,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 06:26:26,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:26:26,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 06:26:26,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-14 06:26:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:26,884 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:26:26,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 06:26:26,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:27,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 06:26:27,149 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:26:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:26:27,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2047864146, now seen corresponding path program 2 times [2021-07-14 06:26:27,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:26:27,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853700156] [2021-07-14 06:26:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:26:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:26:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:26:27,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:26:27,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853700156] [2021-07-14 06:26:27,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853700156] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:26:27,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172122477] [2021-07-14 06:26:27,205 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 06:26:27,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 06:26:27,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:26:27,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-14 06:26:27,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:26:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:26:27,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172122477] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:26:27,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:26:27,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-14 06:26:27,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830880716] [2021-07-14 06:26:27,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 06:26:27,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:26:27,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 06:26:27,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-14 06:26:27,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:27,310 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:26:27,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 06:26:27,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:27,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:26:27,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:26:27,670 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:26:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:26:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash -210357146, now seen corresponding path program 1 times [2021-07-14 06:26:27,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:26:27,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106966346] [2021-07-14 06:26:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:26:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:26:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 06:26:27,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:26:27,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106966346] [2021-07-14 06:26:27,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106966346] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:26:27,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120731583] [2021-07-14 06:26:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:26:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:26:27,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-07-14 06:26:27,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:26:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 06:26:27,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120731583] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:26:27,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:26:27,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-07-14 06:26:27,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680526178] [2021-07-14 06:26:27,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 06:26:27,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:26:27,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 06:26:27,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 06:26:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:27,810 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:26:27,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 06:26:27,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:27,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:26:27,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:26:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:26:28,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:26:28,061 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:26:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:26:28,063 INFO L82 PathProgramCache]: Analyzing trace with hash -289682872, now seen corresponding path program 1 times [2021-07-14 06:26:28,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:26:28,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471430455] [2021-07-14 06:26:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:26:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:26:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-14 06:26:28,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:26:28,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471430455] [2021-07-14 06:26:28,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471430455] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:26:28,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399395086] [2021-07-14 06:26:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 06:26:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:26:28,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-07-14 06:26:28,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:26:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-14 06:26:28,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399395086] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 06:26:28,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-14 06:26:28,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 4 [2021-07-14 06:26:28,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323557700] [2021-07-14 06:26:28,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 06:26:28,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:26:28,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 06:26:28,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 06:26:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:28,177 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:26:28,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:26:28,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:28,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:26:28,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:26:28,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:26:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:26:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:26:28,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:26:28,426 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:26:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:26:28,426 INFO L82 PathProgramCache]: Analyzing trace with hash 891213698, now seen corresponding path program 2 times [2021-07-14 06:26:28,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:26:28,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336112042] [2021-07-14 06:26:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:26:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:26:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:26:28,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:26:28,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336112042] [2021-07-14 06:26:28,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336112042] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:26:28,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820729028] [2021-07-14 06:26:28,541 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 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 06:26:28,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 06:26:28,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:26:28,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 06:26:28,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:26:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:26:28,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820729028] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:26:28,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:26:28,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-07-14 06:26:28,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341482788] [2021-07-14 06:26:28,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 06:26:28,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:26:28,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 06:26:28,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-14 06:26:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:28,707 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:26:28,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 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 06:26:28,707 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:28,707 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:26:28,707 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:26:28,707 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:26:28,707 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:26:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:26:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:26:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:26:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:26:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 06:26:29,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:26:29,159 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 06:26:29,164 INFO L202 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 06:26:29 BasicIcfg [2021-07-14 06:26:29,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 06:26:29,165 INFO L168 Benchmark]: Toolchain (without parser) took 3244.10 ms. Allocated memory was 217.1 MB in the beginning and 261.1 MB in the end (delta: 44.0 MB). Free memory was 197.1 MB in the beginning and 174.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. [2021-07-14 06:26:29,166 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 217.1 MB. Free memory is still 198.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 06:26:29,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.21 ms. Allocated memory is still 217.1 MB. Free memory was 197.0 MB in the beginning and 195.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 06:26:29,166 INFO L168 Benchmark]: Boogie Preprocessor took 14.51 ms. Allocated memory is still 217.1 MB. Free memory was 195.6 MB in the beginning and 194.6 MB in the end (delta: 967.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 06:26:29,166 INFO L168 Benchmark]: RCFGBuilder took 260.61 ms. Allocated memory is still 217.1 MB. Free memory was 194.6 MB in the beginning and 183.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-14 06:26:29,166 INFO L168 Benchmark]: TraceAbstraction took 2932.87 ms. Allocated memory was 217.1 MB in the beginning and 261.1 MB in the end (delta: 44.0 MB). Free memory was 183.2 MB in the beginning and 174.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. [2021-07-14 06:26:29,166 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 0.15 ms. Allocated memory is still 217.1 MB. Free memory is still 198.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.21 ms. Allocated memory is still 217.1 MB. Free memory was 197.0 MB in the beginning and 195.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.51 ms. Allocated memory is still 217.1 MB. Free memory was 195.6 MB in the beginning and 194.6 MB in the end (delta: 967.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 260.61 ms. Allocated memory is still 217.1 MB. Free memory was 194.6 MB in the beginning and 183.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2932.87 ms. Allocated memory was 217.1 MB in the beginning and 261.1 MB in the end (delta: 44.0 MB). Free memory was 183.2 MB in the beginning and 174.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7802, positive: 6651, positive conditional: 6651, positive unconditional: 0, negative: 1151, negative conditional: 1151, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 6672, positive: 6651, positive conditional: 6651, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 6672, positive: 6361, positive conditional: 0, positive unconditional: 6361, negative: 311, negative conditional: 0, negative unconditional: 311, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 197, positive: 183, positive conditional: 0, positive unconditional: 183, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 197, positive: 175, positive conditional: 0, positive unconditional: 175, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 42, positive conditional: 34, positive unconditional: 8, negative: 22, negative conditional: 8, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 166, positive: 84, positive conditional: 58, positive unconditional: 27, negative: 81, negative conditional: 14, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6672, positive: 6178, positive conditional: 0, positive unconditional: 6178, negative: 297, negative conditional: 0, negative unconditional: 297, unknown: 197, unknown conditional: 0, unknown unconditional: 197] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 217, Positive conditional cache size: 34, Positive unconditional cache size: 183, Negative cache size: 22, Negative conditional cache size: 8, Negative unconditional cache size: 14, SemanticConditionEliminator.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 42, positive conditional: 34, positive unconditional: 8, negative: 22, negative conditional: 8, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 166, positive: 84, positive conditional: 58, positive unconditional: 27, negative: 81, negative conditional: 14, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 795, positive: 256, positive conditional: 256, positive unconditional: 0, negative: 497, negative conditional: 156, negative unconditional: 341, unknown: 42, unknown conditional: 42, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 217, Positive conditional cache size: 34, Positive unconditional cache size: 183, Negative cache size: 22, Negative conditional cache size: 8, Negative unconditional cache size: 14, Eliminated conditions: 341, SemanticConditionEliminator.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 42, positive conditional: 34, positive unconditional: 8, negative: 22, negative conditional: 8, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 166, positive: 84, positive conditional: 58, positive unconditional: 27, negative: 81, negative conditional: 14, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 795, positive: 256, positive conditional: 256, positive unconditional: 0, negative: 497, negative conditional: 156, negative unconditional: 341, unknown: 42, unknown conditional: 42, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 217, Positive conditional cache size: 34, Positive unconditional cache size: 183, Negative cache size: 22, Negative conditional cache size: 8, Negative unconditional cache size: 14, Eliminated conditions: 341, SemanticConditionEliminator.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 42, positive conditional: 34, positive unconditional: 8, negative: 22, negative conditional: 8, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 166, positive: 84, positive conditional: 58, positive unconditional: 27, negative: 81, negative conditional: 14, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 795, positive: 256, positive conditional: 256, positive unconditional: 0, negative: 497, negative conditional: 156, negative unconditional: 341, unknown: 42, unknown conditional: 42, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 217, Positive conditional cache size: 34, Positive unconditional cache size: 183, Negative cache size: 22, Negative conditional cache size: 8, Negative unconditional cache size: 14, Eliminated conditions: 341, SemanticConditionEliminator.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 42, positive conditional: 34, positive unconditional: 8, negative: 22, negative conditional: 8, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 166, positive: 84, positive conditional: 58, positive unconditional: 27, negative: 81, negative conditional: 14, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 795, positive: 256, positive conditional: 256, positive unconditional: 0, negative: 497, negative conditional: 156, negative unconditional: 341, unknown: 42, unknown conditional: 42, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 217, Positive conditional cache size: 34, Positive unconditional cache size: 183, Negative cache size: 22, Negative conditional cache size: 8, Negative unconditional cache size: 14, Eliminated conditions: 341, SemanticConditionEliminator.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 795, positive: 290, positive conditional: 290, positive unconditional: 0, negative: 505, negative conditional: 164, negative unconditional: 341, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 42, positive conditional: 34, positive unconditional: 8, negative: 22, negative conditional: 8, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 166, positive: 84, positive conditional: 58, positive unconditional: 27, negative: 81, negative conditional: 14, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 795, positive: 256, positive conditional: 256, positive unconditional: 0, negative: 497, negative conditional: 156, negative unconditional: 341, unknown: 42, unknown conditional: 42, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 217, Positive conditional cache size: 34, Positive unconditional cache size: 183, Negative cache size: 22, Negative conditional cache size: 8, Negative unconditional cache size: 14, Eliminated conditions: 341 ], Maximal queried relation: 5, Independence queries for same thread: 1130 - PositiveResult [Line: 62]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2786.2ms, OverallIterations: 5, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.1ms, PartialOrderReductionTime: 588.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.7ms SsaConstructionTime, 130.7ms SatisfiabilityAnalysisTime, 572.2ms InterpolantComputationTime, 308 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 431 SizeOfPredicates, 2 NumberOfNonLiveVariables, 295 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 124/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...