/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/mbpr3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:42,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:42,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:42,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:42,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:42,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:42,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:42,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:42,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:42,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:42,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:42,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:42,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:42,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:42,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:42,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:42,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:42,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:42,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:42,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:42,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:42,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:42,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:42,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:42,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:42,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:42,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:42,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:42,533 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 22:27:42,546 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:42,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:42,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:42,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:42,548 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:42,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:42,548 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:42,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:42,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:42,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:42,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:42,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:42,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:42,550 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:42,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:42,550 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:42,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:42,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:42,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:42,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:42,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:42,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:42,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:42,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:42,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:42,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:42,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:42,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:42,553 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 22:27:42,876 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:42,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:42,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:42,905 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:42,906 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:42,906 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr3.c [2019-11-06 22:27:42,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3659989e/2bff192a089b4998ab07cd891ab83c92/FLAG0ffa0a426 [2019-11-06 22:27:43,381 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:43,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr3.c [2019-11-06 22:27:43,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3659989e/2bff192a089b4998ab07cd891ab83c92/FLAG0ffa0a426 [2019-11-06 22:27:43,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3659989e/2bff192a089b4998ab07cd891ab83c92 [2019-11-06 22:27:43,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:43,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:43,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:43,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:43,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:43,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:43" (1/1) ... [2019-11-06 22:27:43,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510f79ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:43, skipping insertion in model container [2019-11-06 22:27:43,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:43" (1/1) ... [2019-11-06 22:27:43,830 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:43,856 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:44,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:44,109 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:44,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:44,248 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:44,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44 WrapperNode [2019-11-06 22:27:44,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:44,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:44,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:44,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:44,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (1/1) ... [2019-11-06 22:27:44,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (1/1) ... [2019-11-06 22:27:44,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (1/1) ... [2019-11-06 22:27:44,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (1/1) ... [2019-11-06 22:27:44,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (1/1) ... [2019-11-06 22:27:44,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (1/1) ... [2019-11-06 22:27:44,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (1/1) ... [2019-11-06 22:27:44,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:44,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:44,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:44,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:44,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (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 22:27:44,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:44,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:44,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:44,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:27:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:44,752 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:44,753 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 22:27:44,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:44 BoogieIcfgContainer [2019-11-06 22:27:44,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:44,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:44,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:44,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:44,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:43" (1/3) ... [2019-11-06 22:27:44,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e4278f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:44, skipping insertion in model container [2019-11-06 22:27:44,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:44" (2/3) ... [2019-11-06 22:27:44,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e4278f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:44, skipping insertion in model container [2019-11-06 22:27:44,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:44" (3/3) ... [2019-11-06 22:27:44,762 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2019-11-06 22:27:44,771 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:44,781 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:44,791 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:44,815 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:44,815 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:44,815 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:44,815 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:44,815 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:44,816 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:44,816 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:44,816 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-06 22:27:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 22:27:44,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:44,838 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] [2019-11-06 22:27:44,840 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1164915713, now seen corresponding path program 1 times [2019-11-06 22:27:44,852 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:44,852 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678928833] [2019-11-06 22:27:44,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:44,996 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 22:27:44,997 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678928833] [2019-11-06 22:27:44,998 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:44,998 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:44,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787285168] [2019-11-06 22:27:45,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:45,006 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:45,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:45,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:45,021 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-11-06 22:27:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:45,043 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2019-11-06 22:27:45,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:45,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-11-06 22:27:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:45,051 INFO L225 Difference]: With dead ends: 68 [2019-11-06 22:27:45,051 INFO L226 Difference]: Without dead ends: 34 [2019-11-06 22:27:45,054 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 22:27:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-06 22:27:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-06 22:27:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-06 22:27:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-11-06 22:27:45,088 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 20 [2019-11-06 22:27:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:45,089 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-11-06 22:27:45,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-11-06 22:27:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 22:27:45,090 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:45,090 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] [2019-11-06 22:27:45,091 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash 208061977, now seen corresponding path program 1 times [2019-11-06 22:27:45,091 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:45,092 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130902725] [2019-11-06 22:27:45,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:45,212 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 22:27:45,212 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130902725] [2019-11-06 22:27:45,212 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:45,213 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:27:45,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236738102] [2019-11-06 22:27:45,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:27:45,215 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:45,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:27:45,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:27:45,216 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 5 states. [2019-11-06 22:27:45,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:45,277 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2019-11-06 22:27:45,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:27:45,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-06 22:27:45,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:45,279 INFO L225 Difference]: With dead ends: 42 [2019-11-06 22:27:45,279 INFO L226 Difference]: Without dead ends: 40 [2019-11-06 22:27:45,281 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 22:27:45,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-06 22:27:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-11-06 22:27:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-06 22:27:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-11-06 22:27:45,291 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 20 [2019-11-06 22:27:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:45,291 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-11-06 22:27:45,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:27:45,292 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-11-06 22:27:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 22:27:45,293 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:45,293 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] [2019-11-06 22:27:45,294 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:45,294 INFO L82 PathProgramCache]: Analyzing trace with hash 209909019, now seen corresponding path program 1 times [2019-11-06 22:27:45,294 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:45,295 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340542873] [2019-11-06 22:27:45,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:45,632 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 22:27:45,632 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340542873] [2019-11-06 22:27:45,633 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:45,633 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:27:45,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338146712] [2019-11-06 22:27:45,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:27:45,634 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:45,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:27:45,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:27:45,635 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 6 states. [2019-11-06 22:27:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:45,792 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2019-11-06 22:27:45,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:27:45,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-06 22:27:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:45,798 INFO L225 Difference]: With dead ends: 70 [2019-11-06 22:27:45,798 INFO L226 Difference]: Without dead ends: 43 [2019-11-06 22:27:45,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:27:45,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-06 22:27:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-06 22:27:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-06 22:27:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2019-11-06 22:27:45,822 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 20 [2019-11-06 22:27:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:45,822 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2019-11-06 22:27:45,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:27:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2019-11-06 22:27:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:27:45,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:45,825 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] [2019-11-06 22:27:45,825 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:45,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2624448, now seen corresponding path program 1 times [2019-11-06 22:27:45,826 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:45,826 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735371810] [2019-11-06 22:27:45,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:46,026 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 22:27:46,027 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735371810] [2019-11-06 22:27:46,027 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366600655] [2019-11-06 22:27:46,028 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 22:27:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:46,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:27:46,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:46,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:46,172 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 22:27:46,172 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:46,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:27:46,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:46,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:46,272 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 22:27:46,272 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [560724508] [2019-11-06 22:27:46,287 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 25 [2019-11-06 22:27:46,347 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:46,348 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:46,444 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:46,446 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 28 variables. [2019-11-06 22:27:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:46,450 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:46,494 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-06 22:27:46,494 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:46,501 INFO L553 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2019-11-06 22:27:46,502 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:46,502 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:46,503 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5] total 9 [2019-11-06 22:27:46,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291622173] [2019-11-06 22:27:46,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:46,504 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:27:46,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:27:46,505 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 3 states. [2019-11-06 22:27:46,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:46,709 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:46,710 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: 433#true or 617#(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 22:27:46,718 INFO L168 Benchmark]: Toolchain (without parser) took 2903.96 ms. Allocated memory was 134.7 MB in the beginning and 223.3 MB in the end (delta: 88.6 MB). Free memory was 99.2 MB in the beginning and 153.7 MB in the end (delta: -54.6 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:46,720 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 134.7 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:27:46,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.99 ms. Allocated memory was 134.7 MB in the beginning and 197.1 MB in the end (delta: 62.4 MB). Free memory was 98.9 MB in the beginning and 174.6 MB in the end (delta: -75.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:46,724 INFO L168 Benchmark]: Boogie Preprocessor took 68.05 ms. Allocated memory is still 197.1 MB. Free memory was 174.6 MB in the beginning and 172.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:46,725 INFO L168 Benchmark]: RCFGBuilder took 435.27 ms. Allocated memory is still 197.1 MB. Free memory was 172.5 MB in the beginning and 153.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:46,726 INFO L168 Benchmark]: TraceAbstraction took 1960.56 ms. Allocated memory was 197.1 MB in the beginning and 223.3 MB in the end (delta: 26.2 MB). Free memory was 152.5 MB in the beginning and 153.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:46,736 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 134.7 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 434.99 ms. Allocated memory was 134.7 MB in the beginning and 197.1 MB in the end (delta: 62.4 MB). Free memory was 98.9 MB in the beginning and 174.6 MB in the end (delta: -75.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.05 ms. Allocated memory is still 197.1 MB. Free memory was 174.6 MB in the beginning and 172.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.27 ms. Allocated memory is still 197.1 MB. Free memory was 172.5 MB in the beginning and 153.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1960.56 ms. Allocated memory was 197.1 MB in the beginning and 223.3 MB in the end (delta: 26.2 MB). Free memory was 152.5 MB in the beginning and 153.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 25.0 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: 433#true or 617#(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: 433#true or 617#(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...