/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-tiling/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:44,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:44,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:44,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:44,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:44,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:44,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:44,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:44,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:44,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:44,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:44,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:44,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:44,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:44,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:44,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:44,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:44,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:44,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:44,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:44,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:44,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:44,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:44,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:44,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:44,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:44,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:44,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:44,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:27:44,742 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:44,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:44,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:44,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:44,744 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:44,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:44,744 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:44,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:44,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:44,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:44,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:44,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:44,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:44,745 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:44,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:44,746 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:44,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:44,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:44,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:44,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:44,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:44,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:44,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:44,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:44,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:44,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:44,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:44,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:44,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:27:45,081 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:45,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:45,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:45,104 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:45,105 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:45,105 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2019-11-06 22:27:45,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67a792d5/68658e26c9e84439b60aa7723035e9bd/FLAGc0df71fe4 [2019-11-06 22:27:45,609 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:45,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr4.c [2019-11-06 22:27:45,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67a792d5/68658e26c9e84439b60aa7723035e9bd/FLAGc0df71fe4 [2019-11-06 22:27:45,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67a792d5/68658e26c9e84439b60aa7723035e9bd [2019-11-06 22:27:45,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:45,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:45,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:45,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:45,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:45,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:45" (1/1) ... [2019-11-06 22:27:45,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36629faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:45, skipping insertion in model container [2019-11-06 22:27:45,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:45" (1/1) ... [2019-11-06 22:27:45,994 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:46,026 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:46,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:46,301 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:46,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:46,437 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:46,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46 WrapperNode [2019-11-06 22:27:46,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:46,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:46,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:46,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:46,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (1/1) ... [2019-11-06 22:27:46,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (1/1) ... [2019-11-06 22:27:46,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (1/1) ... [2019-11-06 22:27:46,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (1/1) ... [2019-11-06 22:27:46,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (1/1) ... [2019-11-06 22:27:46,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (1/1) ... [2019-11-06 22:27:46,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (1/1) ... [2019-11-06 22:27:46,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:46,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:46,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:46,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:46,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (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 [2019-11-06 22:27:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:27:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:46,956 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:46,956 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:27:46,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:46 BoogieIcfgContainer [2019-11-06 22:27:46,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:46,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:46,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:46,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:46,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:45" (1/3) ... [2019-11-06 22:27:46,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426c98d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:46, skipping insertion in model container [2019-11-06 22:27:46,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:46" (2/3) ... [2019-11-06 22:27:46,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426c98d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:46, skipping insertion in model container [2019-11-06 22:27:46,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:46" (3/3) ... [2019-11-06 22:27:46,972 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2019-11-06 22:27:46,984 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:46,996 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:47,009 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:47,036 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:47,036 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:47,036 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:47,036 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:47,036 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:47,036 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:47,037 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:47,037 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-11-06 22:27:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 22:27:47,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:47,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:47,064 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:47,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:47,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1961398023, now seen corresponding path program 1 times [2019-11-06 22:27:47,076 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:47,077 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478625767] [2019-11-06 22:27:47,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:47,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478625767] [2019-11-06 22:27:47,239 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:47,239 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:47,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454254558] [2019-11-06 22:27:47,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:47,247 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:47,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:47,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:47,266 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-11-06 22:27:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:47,292 INFO L93 Difference]: Finished difference Result 78 states and 108 transitions. [2019-11-06 22:27:47,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:47,294 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-11-06 22:27:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:47,303 INFO L225 Difference]: With dead ends: 78 [2019-11-06 22:27:47,303 INFO L226 Difference]: Without dead ends: 39 [2019-11-06 22:27:47,307 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-06 22:27:47,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-06 22:27:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-06 22:27:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2019-11-06 22:27:47,349 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 22 [2019-11-06 22:27:47,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:47,350 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2019-11-06 22:27:47,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:47,350 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2019-11-06 22:27:47,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 22:27:47,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:47,353 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:47,353 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:47,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:47,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1084797805, now seen corresponding path program 1 times [2019-11-06 22:27:47,354 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:47,354 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099205959] [2019-11-06 22:27:47,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:47,544 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099205959] [2019-11-06 22:27:47,544 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:47,545 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:27:47,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214362474] [2019-11-06 22:27:47,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:27:47,547 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:47,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:27:47,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:27:47,549 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 5 states. [2019-11-06 22:27:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:47,631 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2019-11-06 22:27:47,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:27:47,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-06 22:27:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:47,634 INFO L225 Difference]: With dead ends: 47 [2019-11-06 22:27:47,634 INFO L226 Difference]: Without dead ends: 45 [2019-11-06 22:27:47,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:27:47,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-06 22:27:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-11-06 22:27:47,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:27:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-11-06 22:27:47,653 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 22 [2019-11-06 22:27:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:47,653 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-11-06 22:27:47,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:27:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-11-06 22:27:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 22:27:47,656 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:47,656 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:47,656 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:47,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1082950763, now seen corresponding path program 1 times [2019-11-06 22:27:47,657 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:47,658 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887997557] [2019-11-06 22:27:47,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:47,943 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887997557] [2019-11-06 22:27:47,943 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:47,943 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:27:47,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699080626] [2019-11-06 22:27:47,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:27:47,944 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:47,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:47,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:47,945 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2019-11-06 22:27:48,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:48,082 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2019-11-06 22:27:48,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:27:48,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-11-06 22:27:48,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:48,086 INFO L225 Difference]: With dead ends: 80 [2019-11-06 22:27:48,087 INFO L226 Difference]: Without dead ends: 48 [2019-11-06 22:27:48,088 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-06 22:27:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2019-11-06 22:27:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-06 22:27:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2019-11-06 22:27:48,096 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 22 [2019-11-06 22:27:48,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:48,097 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2019-11-06 22:27:48,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:27:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2019-11-06 22:27:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-06 22:27:48,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:48,098 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:48,099 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1675538566, now seen corresponding path program 1 times [2019-11-06 22:27:48,100 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:48,100 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000455401] [2019-11-06 22:27:48,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:48,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000455401] [2019-11-06 22:27:48,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279972998] [2019-11-06 22:27:48,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:48,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:27:48,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:48,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:48,450 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:48,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:27:48,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:48,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:48,561 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [68747639] [2019-11-06 22:27:48,568 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 27 [2019-11-06 22:27:48,633 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:48,633 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:48,772 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:48,775 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 22 root evaluator evaluations with a maximum evaluation depth of 2. Performed 22 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 30 variables. [2019-11-06 22:27:48,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:48,780 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:48,864 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-06 22:27:48,865 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:48,870 INFO L553 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-11-06 22:27:48,870 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:48,872 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:48,872 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 5, 5] total 10 [2019-11-06 22:27:48,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28331816] [2019-11-06 22:27:48,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:48,874 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:48,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:27:48,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:27:48,875 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 3 states. [2019-11-06 22:27:48,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:49,077 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:49,078 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 484#true or 683#(and (<= ~CELLCOUNT~0 2147483647) (<= 0 (+ ~CELLCOUNT~0 2147483648))) ([#1{~CELLCOUNT~0 = [-2147483648;2147483647]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-06 22:27:49,084 INFO L168 Benchmark]: Toolchain (without parser) took 3108.43 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 103.6 MB in the beginning and 162.7 MB in the end (delta: -59.1 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:49,085 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:27:49,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.05 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 179.9 MB in the end (delta: -76.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:49,087 INFO L168 Benchmark]: Boogie Preprocessor took 49.94 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 177.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:49,088 INFO L168 Benchmark]: RCFGBuilder took 468.14 ms. Allocated memory is still 201.3 MB. Free memory was 177.5 MB in the beginning and 155.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:49,089 INFO L168 Benchmark]: TraceAbstraction took 2116.21 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 155.3 MB in the beginning and 162.7 MB in the end (delta: -7.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:49,094 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 462.05 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 179.9 MB in the end (delta: -76.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.94 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 177.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.14 ms. Allocated memory is still 201.3 MB. Free memory was 177.5 MB in the beginning and 155.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2116.21 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 155.3 MB in the beginning and 162.7 MB in the end (delta: -7.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 484#true or 683#(and (<= ~CELLCOUNT~0 2147483647) (<= 0 (+ ~CELLCOUNT~0 2147483648))) ([#1{~CELLCOUNT~0 = [-2147483648;2147483647]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 484#true or 683#(and (<= ~CELLCOUNT~0 2147483647) (<= 0 (+ ~CELLCOUNT~0 2147483648))) ([#1{~CELLCOUNT~0 = [-2147483648;2147483647]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...