/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/pnr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:51,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:51,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:51,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:27:51,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:51,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:51,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:51,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:51,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:51,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:51,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:51,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:51,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:51,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:51,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:51,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:51,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:51,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:51,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:51,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:51,505 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 22:27:51,526 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:51,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:51,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:51,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:51,533 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:51,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:51,534 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:51,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:51,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:51,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:51,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:51,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:51,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:51,536 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:51,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:51,537 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:51,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:51,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:51,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:51,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:51,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:51,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:51,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:51,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:51,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:51,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:51,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:51,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:51,543 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 22:27:51,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:51,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:51,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:51,864 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:51,864 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:51,865 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pnr4.c [2019-11-06 22:27:51,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed86ecd9/4bc9f8ee94b14ed898174a53073e6905/FLAGbc2b60f83 [2019-11-06 22:27:52,412 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:52,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pnr4.c [2019-11-06 22:27:52,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed86ecd9/4bc9f8ee94b14ed898174a53073e6905/FLAGbc2b60f83 [2019-11-06 22:27:52,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed86ecd9/4bc9f8ee94b14ed898174a53073e6905 [2019-11-06 22:27:52,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:52,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:52,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:52,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:52,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:52,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:52" (1/1) ... [2019-11-06 22:27:52,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2f7aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:52, skipping insertion in model container [2019-11-06 22:27:52,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:52" (1/1) ... [2019-11-06 22:27:52,787 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:52,807 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:53,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:53,025 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:53,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:53,149 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:53,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53 WrapperNode [2019-11-06 22:27:53,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:53,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:53,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:53,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:53,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (1/1) ... [2019-11-06 22:27:53,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (1/1) ... [2019-11-06 22:27:53,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (1/1) ... [2019-11-06 22:27:53,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (1/1) ... [2019-11-06 22:27:53,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (1/1) ... [2019-11-06 22:27:53,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (1/1) ... [2019-11-06 22:27:53,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (1/1) ... [2019-11-06 22:27:53,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:53,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:53,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:53,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:53,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (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 22:27:53,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:53,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:53,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:53,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2019-11-06 22:27:53,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:27:53,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:27:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2019-11-06 22:27:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:27:53,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:53,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:53,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:53,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:53,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:53,563 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:53,564 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 22:27:53,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:53 BoogieIcfgContainer [2019-11-06 22:27:53,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:53,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:53,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:53,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:53,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:52" (1/3) ... [2019-11-06 22:27:53,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58adf534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:53, skipping insertion in model container [2019-11-06 22:27:53,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:53" (2/3) ... [2019-11-06 22:27:53,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58adf534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:53, skipping insertion in model container [2019-11-06 22:27:53,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:53" (3/3) ... [2019-11-06 22:27:53,573 INFO L109 eAbstractionObserver]: Analyzing ICFG pnr4.c [2019-11-06 22:27:53,585 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:53,594 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:53,607 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:53,634 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:53,634 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:53,634 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:53,634 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:53,635 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:53,635 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:53,635 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:53,635 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-06 22:27:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:53,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:53,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:53,666 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash -315503509, now seen corresponding path program 1 times [2019-11-06 22:27:53,682 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:53,683 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235234112] [2019-11-06 22:27:53,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:53,822 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 22:27:53,822 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235234112] [2019-11-06 22:27:53,823 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:53,823 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:53,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865971085] [2019-11-06 22:27:53,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:53,829 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:53,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:53,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:53,847 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2019-11-06 22:27:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:53,879 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2019-11-06 22:27:53,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:53,880 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-06 22:27:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:53,890 INFO L225 Difference]: With dead ends: 57 [2019-11-06 22:27:53,890 INFO L226 Difference]: Without dead ends: 36 [2019-11-06 22:27:53,894 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 22:27:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-06 22:27:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-06 22:27:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-06 22:27:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2019-11-06 22:27:53,943 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 15 [2019-11-06 22:27:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:53,944 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-11-06 22:27:53,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2019-11-06 22:27:53,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:53,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:53,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:53,946 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:53,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1206598662, now seen corresponding path program 1 times [2019-11-06 22:27:53,947 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:53,948 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885199405] [2019-11-06 22:27:53,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:54,232 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 22:27:54,232 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885199405] [2019-11-06 22:27:54,233 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:54,233 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:27:54,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618351003] [2019-11-06 22:27:54,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:27:54,235 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:54,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:54,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:54,236 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2019-11-06 22:27:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:54,363 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2019-11-06 22:27:54,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:27:54,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-06 22:27:54,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:54,365 INFO L225 Difference]: With dead ends: 61 [2019-11-06 22:27:54,365 INFO L226 Difference]: Without dead ends: 50 [2019-11-06 22:27:54,367 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 22:27:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-06 22:27:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2019-11-06 22:27:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-06 22:27:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-11-06 22:27:54,379 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 15 [2019-11-06 22:27:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:54,380 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-11-06 22:27:54,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:27:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-11-06 22:27:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-06 22:27:54,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:54,382 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:54,382 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash -788561807, now seen corresponding path program 1 times [2019-11-06 22:27:54,383 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:54,383 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640486699] [2019-11-06 22:27:54,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 22:27:54,784 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640486699] [2019-11-06 22:27:54,784 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90621353] [2019-11-06 22:27:54,784 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 22:27:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:54,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-06 22:27:54,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:54,956 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-11-06 22:27:54,956 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:27:54,968 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:27:54,969 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:27:54,970 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2019-11-06 22:27:55,014 INFO L341 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2019-11-06 22:27:55,015 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-11-06 22:27:55,015 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,023 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:27:55,024 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,024 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-11-06 22:27:55,052 INFO L341 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2019-11-06 22:27:55,053 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-11-06 22:27:55,054 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,062 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:27:55,063 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,064 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-11-06 22:27:55,087 INFO L341 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2019-11-06 22:27:55,088 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2019-11-06 22:27:55,089 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,095 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:27:55,096 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,096 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:8 [2019-11-06 22:27:55,131 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-11-06 22:27:55,132 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,134 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:27:55,134 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,135 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2019-11-06 22:27:55,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:27:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 22:27:55,169 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:55,261 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2019-11-06 22:27:55,267 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2019-11-06 22:27:55,268 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,270 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:27:55,270 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 22:27:55,272 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 22:27:55,272 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 22:27:55,273 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:15, output treesize:8 [2019-11-06 22:27:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 22:27:55,297 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2136921348] [2019-11-06 22:27:55,303 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 42 [2019-11-06 22:27:55,341 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:55,342 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:55,408 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:55,410 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 31 variables. [2019-11-06 22:27:55,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:55,414 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:55,456 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-11-06 22:27:55,456 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:55,469 INFO L553 sIntCurrentIteration]: We unified 40 AI predicates to 40 [2019-11-06 22:27:55,470 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:55,470 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:55,472 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 9, 8] total 19 [2019-11-06 22:27:55,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280330700] [2019-11-06 22:27:55,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:27:55,475 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:55,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:27:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:27:55,477 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2019-11-06 22:27:55,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:55,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:55,688 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: 305#true or 613#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]) 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 22:27:55,693 INFO L168 Benchmark]: Toolchain (without parser) took 2921.79 ms. Allocated memory was 146.8 MB in the beginning and 233.8 MB in the end (delta: 87.0 MB). Free memory was 104.4 MB in the beginning and 119.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:55,694 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:27:55,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.90 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 104.4 MB in the beginning and 182.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:55,696 INFO L168 Benchmark]: Boogie Preprocessor took 37.74 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:55,696 INFO L168 Benchmark]: RCFGBuilder took 377.40 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 161.6 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:55,697 INFO L168 Benchmark]: TraceAbstraction took 2124.36 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 161.6 MB in the beginning and 119.6 MB in the end (delta: 42.0 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:55,701 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.90 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 104.4 MB in the beginning and 182.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.74 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 377.40 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 161.6 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2124.36 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 161.6 MB in the beginning and 119.6 MB in the end (delta: 42.0 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 305#true or 613#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 305#true or 613#(= ~MAX~0 100000) ([#1{~MAX~0 = [100000;100000]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...