/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-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/two-queue.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 11:05:25,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 11:05:25,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 11:05:25,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 11:05:25,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 11:05:25,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 11:05:25,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 11:05:25,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 11:05:25,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 11:05:25,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 11:05:25,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 11:05:25,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 11:05:25,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 11:05:25,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 11:05:25,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 11:05:25,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 11:05:25,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-06 11:05:25,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 11:05:25,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 11:05:25,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 11:05:25,564 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-DelaySleep-NoLbe.epf [2021-06-06 11:05:25,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 11:05:25,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 11:05:25,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 11:05:25,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 11:05:25,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 11:05:25,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 11:05:25,599 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 11:05:25,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 11:05:25,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 11:05:25,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 11:05:25,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 11:05:25,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 11:05:25,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 11:05:25,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 11:05:25,602 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 11:05:25,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 11:05:25,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 11:05:25,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 11:05:25,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 11:05:25,863 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 11:05:25,869 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 11:05:25,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/two-queue.wvr.bpl [2021-06-06 11:05:25,870 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/two-queue.wvr.bpl' [2021-06-06 11:05:25,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 11:05:25,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 11:05:25,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 11:05:25,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 11:05:25,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 11:05:25,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 11:05:25,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 11:05:25,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 11:05:25,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 11:05:25,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/1) ... [2021-06-06 11:05:25,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 11:05:25,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 11:05:25,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 11:05:25,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 11:05:25,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (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 [2021-06-06 11:05:25,984 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 11:05:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 11:05:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 11:05:25,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 11:05:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 11:05:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 11:05:25,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 11:05:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 11:05:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 11:05:25,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 11:05:26,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 11:05:26,130 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 11:05:26,131 INFO L202 PluginConnector]: Adding new model two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:05:26 BoogieIcfgContainer [2021-06-06 11:05:26,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 11:05:26,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 11:05:26,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 11:05:26,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 11:05:26,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:05:25" (1/2) ... [2021-06-06 11:05:26,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7438e8ae and model type two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 11:05:26, skipping insertion in model container [2021-06-06 11:05:26,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:05:26" (2/2) ... [2021-06-06 11:05:26,152 INFO L111 eAbstractionObserver]: Analyzing ICFG two-queue.wvr.bpl [2021-06-06 11:05:26,155 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 11:05:26,155 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 11:05:26,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 11:05:26,156 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 11:05:26,195 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-06 11:05:26,224 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 11:05:26,266 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 11:05:26,266 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 11:05:26,266 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 11:05:26,266 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 11:05:26,266 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 11:05:26,267 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 11:05:26,267 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 11:05:26,267 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 11:05:26,326 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:05:26,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:05:26,329 INFO L82 PathProgramCache]: Analyzing trace with hash 616707518, now seen corresponding path program 1 times [2021-06-06 11:05:26,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:05:26,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665165199] [2021-06-06 11:05:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:05:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:05:26,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:05:26,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665165199] [2021-06-06 11:05:26,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665165199] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:26,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729461064] [2021-06-06 11:05:26,652 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 [2021-06-06 11:05:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:26,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-06 11:05:26,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:05:26,885 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 17 treesize of output 9 [2021-06-06 11:05:26,888 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 11:05:26,892 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:05:26,894 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:05:26,894 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:11 [2021-06-06 11:05:26,984 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 18 treesize of output 12 [2021-06-06 11:05:26,986 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 11:05:26,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:05:26,990 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:05:26,990 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:9 [2021-06-06 11:05:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:05:27,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729461064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:27,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:05:27,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-06 11:05:27,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144066507] [2021-06-06 11:05:27,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 11:05:27,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:05:27,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 11:05:27,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-06-06 11:05:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:27,052 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:05:27,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:05:27,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:27,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-06 11:05:27,615 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:05:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:05:27,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1303381503, now seen corresponding path program 2 times [2021-06-06 11:05:27,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:05:27,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129655238] [2021-06-06 11:05:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:05:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:05:27,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:05:27,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129655238] [2021-06-06 11:05:27,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129655238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:27,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624369458] [2021-06-06 11:05:27,659 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 [2021-06-06 11:05:27,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 11:05:27,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:05:27,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-06 11:05:27,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:05:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 11:05:27,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624369458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 11:05:27,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-06 11:05:27,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-06-06 11:05:27,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818301287] [2021-06-06 11:05:27,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 11:05:27,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:05:27,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 11:05:27,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-06 11:05:27,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:27,766 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:05:27,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:05:27,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:27,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:28,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:28,028 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:05:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:05:28,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1944583606, now seen corresponding path program 3 times [2021-06-06 11:05:28,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:05:28,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762134025] [2021-06-06 11:05:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:05:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-06 11:05:28,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:05:28,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762134025] [2021-06-06 11:05:28,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762134025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:28,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261779101] [2021-06-06 11:05:28,079 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:28,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 11:05:28,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:05:28,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-06 11:05:28,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:05:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-06 11:05:28,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261779101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:28,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:05:28,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2021-06-06 11:05:28,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884340527] [2021-06-06 11:05:28,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-06 11:05:28,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:05:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-06 11:05:28,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-06 11:05:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:28,162 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:05:28,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:05:28,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:28,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:28,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:28,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:28,389 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:05:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:05:28,389 INFO L82 PathProgramCache]: Analyzing trace with hash -975145404, now seen corresponding path program 4 times [2021-06-06 11:05:28,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:05:28,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530660038] [2021-06-06 11:05:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:05:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:05:28,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:05:28,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530660038] [2021-06-06 11:05:28,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530660038] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:28,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645511252] [2021-06-06 11:05:28,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:28,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 11:05:28,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:05:28,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-06 11:05:28,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:05:29,009 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 [2021-06-06 11:05:29,010 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 11:05:29,013 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:05:29,014 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:05:29,014 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2021-06-06 11:05:29,057 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 [2021-06-06 11:05:29,058 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 11:05:29,061 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:05:29,062 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:05:29,062 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2021-06-06 11:05:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:05:29,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645511252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:29,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:05:29,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 26 [2021-06-06 11:05:29,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274183736] [2021-06-06 11:05:29,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-06 11:05:29,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:05:29,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-06 11:05:29,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-06-06 11:05:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:29,151 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:05:29,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:05:29,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:29,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:29,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:29,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 11:05:29,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:29,945 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:05:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:05:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash 546361546, now seen corresponding path program 5 times [2021-06-06 11:05:29,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:05:29,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435059766] [2021-06-06 11:05:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:05:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-06 11:05:30,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:05:30,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435059766] [2021-06-06 11:05:30,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435059766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:30,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041249788] [2021-06-06 11:05:30,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:30,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 11:05:30,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:05:30,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 11:05:30,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:05:30,418 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 [2021-06-06 11:05:30,420 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 11:05:30,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:05:30,423 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:05:30,423 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2021-06-06 11:05:30,457 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 [2021-06-06 11:05:30,459 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 11:05:30,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:05:30,463 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:05:30,463 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2021-06-06 11:05:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 11:05:30,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041249788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:30,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:05:30,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 22 [2021-06-06 11:05:30,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312092927] [2021-06-06 11:05:30,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 11:05:30,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:05:30,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 11:05:30,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-06-06 11:05:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:30,527 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:05:30,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:05:30,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:30,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:30,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:30,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 11:05:30,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 11:05:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 11:05:31,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:31,373 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:05:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:05:31,373 INFO L82 PathProgramCache]: Analyzing trace with hash 945812432, now seen corresponding path program 6 times [2021-06-06 11:05:31,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:05:31,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480554063] [2021-06-06 11:05:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:05:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-06 11:05:31,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:05:31,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480554063] [2021-06-06 11:05:31,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480554063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:31,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628860503] [2021-06-06 11:05:31,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:31,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 11:05:31,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:05:31,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 11:05:31,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:05:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-06 11:05:31,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628860503] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:31,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:05:31,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-06-06 11:05:31,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415446074] [2021-06-06 11:05:31,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-06 11:05:31,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:05:31,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-06 11:05:31,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-06 11:05:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:31,513 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:05:31,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:05:31,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:31,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:31,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:31,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-06 11:05:31,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-06 11:05:31,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 11:05:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 11:05:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:31,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:31,751 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:05:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:05:31,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1729359670, now seen corresponding path program 7 times [2021-06-06 11:05:31,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:05:31,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444388630] [2021-06-06 11:05:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:05:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 11:05:31,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:05:31,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444388630] [2021-06-06 11:05:31,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444388630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:31,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881161317] [2021-06-06 11:05:31,992 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:05:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:05:32,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 11:05:32,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:05:32,109 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 17 treesize of output 9 [2021-06-06 11:05:32,111 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 11:05:32,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:05:32,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:05:32,114 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2021-06-06 11:05:32,141 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 [2021-06-06 11:05:32,142 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 11:05:32,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:05:32,146 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:05:32,146 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2021-06-06 11:05:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 11:05:32,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881161317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:05:32,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:05:32,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 20 [2021-06-06 11:05:32,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064580338] [2021-06-06 11:05:32,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 11:05:32,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:05:32,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 11:05:32,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-06-06 11:05:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:32,206 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:05:32,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:05:32,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:32,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:32,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:32,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-06 11:05:32,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-06 11:05:32,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:32,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:05:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 11:05:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:05:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 11:05:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 11:05:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 11:05:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:05:32,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-06 11:05:32,841 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 11:05:32,843 INFO L202 PluginConnector]: Adding new model two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 11:05:32 BasicIcfg [2021-06-06 11:05:32,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 11:05:32,843 INFO L168 Benchmark]: Toolchain (without parser) took 6956.26 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 351.7 MB in the beginning and 392.7 MB in the end (delta: -41.0 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.0 GB. [2021-06-06 11:05:32,843 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 373.3 MB. Free memory was 352.9 MB in the beginning and 352.8 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 11:05:32,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.98 ms. Allocated memory is still 373.3 MB. Free memory was 351.6 MB in the beginning and 350.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 11:05:32,843 INFO L168 Benchmark]: Boogie Preprocessor took 11.95 ms. Allocated memory is still 373.3 MB. Free memory was 350.2 MB in the beginning and 349.2 MB in the end (delta: 995.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 11:05:32,843 INFO L168 Benchmark]: RCFGBuilder took 216.49 ms. Allocated memory is still 373.3 MB. Free memory was 349.2 MB in the beginning and 335.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-06 11:05:32,844 INFO L168 Benchmark]: TraceAbstraction took 6704.90 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 335.3 MB in the beginning and 392.7 MB in the end (delta: -57.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.0 GB. [2021-06-06 11:05:32,844 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 0.13 ms. Allocated memory is still 373.3 MB. Free memory was 352.9 MB in the beginning and 352.8 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.98 ms. Allocated memory is still 373.3 MB. Free memory was 351.6 MB in the beginning and 350.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.95 ms. Allocated memory is still 373.3 MB. Free memory was 350.2 MB in the beginning and 349.2 MB in the end (delta: 995.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 216.49 ms. Allocated memory is still 373.3 MB. Free memory was 349.2 MB in the beginning and 335.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6704.90 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 335.3 MB in the beginning and 392.7 MB in the end (delta: -57.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 709, positive: 580, positive conditional: 580, positive unconditional: 0, negative: 129, negative conditional: 129, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 604, positive: 580, positive conditional: 580, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 604, positive: 579, positive conditional: 0, positive unconditional: 579, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 48, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 48, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 14, negative conditional: 13, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 1, positive unconditional: 4, negative: 45, negative conditional: 24, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 604, positive: 532, positive conditional: 0, positive unconditional: 532, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 48, unknown conditional: 0, unknown unconditional: 48] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 13, Negative unconditional cache size: 1, SemanticConditionEliminator.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 14, negative conditional: 13, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 1, positive unconditional: 4, negative: 45, negative conditional: 24, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 107, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 93, negative conditional: 50, negative unconditional: 43, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 13, Negative unconditional cache size: 1, Eliminated conditions: 43, SemanticConditionEliminator.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 14, negative conditional: 13, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 1, positive unconditional: 4, negative: 45, negative conditional: 24, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 107, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 93, negative conditional: 50, negative unconditional: 43, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 13, Negative unconditional cache size: 1, Eliminated conditions: 43, SemanticConditionEliminator.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 14, negative conditional: 13, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 1, positive unconditional: 4, negative: 45, negative conditional: 24, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 107, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 93, negative conditional: 50, negative unconditional: 43, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 13, Negative unconditional cache size: 1, Eliminated conditions: 43, SemanticConditionEliminator.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 14, negative conditional: 13, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 1, positive unconditional: 4, negative: 45, negative conditional: 24, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 107, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 93, negative conditional: 50, negative unconditional: 43, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 13, Negative unconditional cache size: 1, Eliminated conditions: 43, SemanticConditionEliminator.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 14, negative conditional: 13, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 1, positive unconditional: 4, negative: 45, negative conditional: 24, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 107, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 93, negative conditional: 50, negative unconditional: 43, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 13, Negative unconditional cache size: 1, Eliminated conditions: 43, SemanticConditionEliminator.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 14, negative conditional: 13, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 1, positive unconditional: 4, negative: 45, negative conditional: 24, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 107, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 93, negative conditional: 50, negative unconditional: 43, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 13, Negative unconditional cache size: 1, Eliminated conditions: 43, SemanticConditionEliminator.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 107, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 106, negative conditional: 63, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 14, negative conditional: 13, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 5, positive conditional: 1, positive unconditional: 4, negative: 45, negative conditional: 24, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 107, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 93, negative conditional: 50, negative unconditional: 43, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 13, Negative unconditional cache size: 1, Eliminated conditions: 43 ], Maximal queried relation: 7, Independence queries for same thread: 105 - 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 5 procedures, 36 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6606.4ms, OverallIterations: 7, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 2115.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 90, 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: 42.4ms SsaConstructionTime, 187.1ms SatisfiabilityAnalysisTime, 2477.8ms InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 3352 SizeOfPredicates, 30 NumberOfNonLiveVariables, 616 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 178/350 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...