/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-crafted/zero_sum_m3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:13,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:13,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:13,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:13,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:13,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:13,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:13,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:13,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:13,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:13,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:13,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:13,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:13,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:13,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:13,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:13,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:13,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:13,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:13,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:13,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:13,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:13,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:13,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:13,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:13,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:13,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:13,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:13,435 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 22:26:13,454 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:13,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:13,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:13,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:13,457 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:13,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:13,457 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:13,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:13,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:13,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:13,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:13,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:13,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:13,460 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:13,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:13,460 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:13,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:13,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:13,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:13,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:13,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:13,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:13,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:13,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:13,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:13,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:13,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:13,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:13,462 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 22:26:13,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:13,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:13,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:13,782 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:13,782 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:13,783 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_m3.c [2019-11-06 22:26:13,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9dd6d171/f1c3c9ddcc0c4f7c88e35661e7379dd5/FLAG11162db29 [2019-11-06 22:26:14,334 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:14,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_m3.c [2019-11-06 22:26:14,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9dd6d171/f1c3c9ddcc0c4f7c88e35661e7379dd5/FLAG11162db29 [2019-11-06 22:26:14,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9dd6d171/f1c3c9ddcc0c4f7c88e35661e7379dd5 [2019-11-06 22:26:14,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:14,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:14,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:14,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:14,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:14,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:14,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ce97a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14, skipping insertion in model container [2019-11-06 22:26:14,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:14,707 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:14,725 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:14,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:14,954 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:14,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:14,994 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:14,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14 WrapperNode [2019-11-06 22:26:14,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:14,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:14,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:14,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:15,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:15,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:15,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:15,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:15,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:15,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:15,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2019-11-06 22:26:15,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:15,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:15,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:15,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:15,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (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 22:26:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:26:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-11-06 22:26:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:15,546 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:15,547 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-06 22:26:15,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:15 BoogieIcfgContainer [2019-11-06 22:26:15,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:15,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:15,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:15,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:15,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:14" (1/3) ... [2019-11-06 22:26:15,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff4301c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:15, skipping insertion in model container [2019-11-06 22:26:15,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (2/3) ... [2019-11-06 22:26:15,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff4301c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:15, skipping insertion in model container [2019-11-06 22:26:15,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:15" (3/3) ... [2019-11-06 22:26:15,556 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_m3.c [2019-11-06 22:26:15,563 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:15,570 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:15,582 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:15,607 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:15,608 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:15,608 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:15,608 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:15,608 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:15,608 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:15,609 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:15,609 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:15,625 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-06 22:26:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:26:15,631 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:15,632 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 22:26:15,633 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:15,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:15,638 INFO L82 PathProgramCache]: Analyzing trace with hash -604531369, now seen corresponding path program 1 times [2019-11-06 22:26:15,647 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:15,648 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969320078] [2019-11-06 22:26:15,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:15,779 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 22:26:15,780 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969320078] [2019-11-06 22:26:15,781 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:15,781 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:15,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498320231] [2019-11-06 22:26:15,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:15,787 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:15,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:15,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:15,804 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-11-06 22:26:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:15,830 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2019-11-06 22:26:15,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:15,832 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-11-06 22:26:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:15,840 INFO L225 Difference]: With dead ends: 71 [2019-11-06 22:26:15,841 INFO L226 Difference]: Without dead ends: 32 [2019-11-06 22:26:15,844 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 22:26:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-06 22:26:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-06 22:26:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 22:26:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-06 22:26:15,891 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2019-11-06 22:26:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:15,891 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-06 22:26:15,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-06 22:26:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:26:15,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:15,893 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 22:26:15,894 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:15,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:15,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1170586821, now seen corresponding path program 1 times [2019-11-06 22:26:15,895 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:15,895 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778226413] [2019-11-06 22:26:15,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:16,038 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 22:26:16,038 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778226413] [2019-11-06 22:26:16,039 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:16,039 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:26:16,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975780017] [2019-11-06 22:26:16,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:26:16,042 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:16,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:26:16,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:26:16,042 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2019-11-06 22:26:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:16,134 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2019-11-06 22:26:16,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:26:16,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-06 22:26:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:16,136 INFO L225 Difference]: With dead ends: 48 [2019-11-06 22:26:16,137 INFO L226 Difference]: Without dead ends: 43 [2019-11-06 22:26:16,138 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 22:26:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-06 22:26:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-06 22:26:16,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 22:26:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-11-06 22:26:16,149 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 24 [2019-11-06 22:26:16,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:16,149 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-06 22:26:16,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:26:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2019-11-06 22:26:16,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-06 22:26:16,152 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:16,153 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:16,153 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:16,155 INFO L82 PathProgramCache]: Analyzing trace with hash 669656451, now seen corresponding path program 1 times [2019-11-06 22:26:16,155 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:16,156 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561758458] [2019-11-06 22:26:16,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:16,213 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561758458] [2019-11-06 22:26:16,214 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:16,214 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:16,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484396621] [2019-11-06 22:26:16,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:16,215 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:16,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:16,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:16,216 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 3 states. [2019-11-06 22:26:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:16,270 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2019-11-06 22:26:16,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:16,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-06 22:26:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:16,272 INFO L225 Difference]: With dead ends: 79 [2019-11-06 22:26:16,272 INFO L226 Difference]: Without dead ends: 45 [2019-11-06 22:26:16,273 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-06 22:26:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-11-06 22:26:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:26:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2019-11-06 22:26:16,281 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 26 [2019-11-06 22:26:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:16,281 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2019-11-06 22:26:16,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2019-11-06 22:26:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-06 22:26:16,282 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:16,283 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:16,283 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1075251265, now seen corresponding path program 1 times [2019-11-06 22:26:16,284 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:16,284 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370657748] [2019-11-06 22:26:16,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:26:16,344 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370657748] [2019-11-06 22:26:16,345 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:16,345 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:26:16,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697623846] [2019-11-06 22:26:16,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:26:16,346 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:16,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:16,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:26:16,348 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 4 states. [2019-11-06 22:26:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:16,455 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2019-11-06 22:26:16,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:26:16,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-11-06 22:26:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:16,457 INFO L225 Difference]: With dead ends: 74 [2019-11-06 22:26:16,457 INFO L226 Difference]: Without dead ends: 45 [2019-11-06 22:26:16,458 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:26:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-06 22:26:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-06 22:26:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-06 22:26:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-11-06 22:26:16,466 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 28 [2019-11-06 22:26:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:16,466 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-11-06 22:26:16,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:26:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-11-06 22:26:16,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-06 22:26:16,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:16,468 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:16,469 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:16,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:16,469 INFO L82 PathProgramCache]: Analyzing trace with hash -215297609, now seen corresponding path program 1 times [2019-11-06 22:26:16,469 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:16,470 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169968101] [2019-11-06 22:26:16,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:26:16,562 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169968101] [2019-11-06 22:26:16,563 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098280761] [2019-11-06 22:26:16,563 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 22:26:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:16,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:26:16,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:26:16,704 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:26:16,743 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [237789203] [2019-11-06 22:26:16,749 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 39 [2019-11-06 22:26:16,815 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:16,815 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:16,884 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:16,885 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 34 variables. [2019-11-06 22:26:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:16,890 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:16,933 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-06 22:26:16,933 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:16,940 INFO L553 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-11-06 22:26:16,941 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:16,941 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:16,942 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 8 [2019-11-06 22:26:16,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072111375] [2019-11-06 22:26:16,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:16,943 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:16,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:26:16,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:16,944 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 3 states. [2019-11-06 22:26:16,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:17,146 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:17,147 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: 669#true or 950#(and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) ([#1{~SIZE~0 = [-32768;32767]; }]) 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 22:26:17,153 INFO L168 Benchmark]: Toolchain (without parser) took 2462.05 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 104.7 MB in the beginning and 177.2 MB in the end (delta: -72.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:17,154 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:17,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.27 ms. Allocated memory is still 139.5 MB. Free memory was 104.5 MB in the beginning and 93.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:17,157 INFO L168 Benchmark]: Boogie Preprocessor took 127.57 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.9 MB in the beginning and 180.6 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:17,157 INFO L168 Benchmark]: RCFGBuilder took 424.88 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 162.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:17,159 INFO L168 Benchmark]: TraceAbstraction took 1602.24 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 161.9 MB in the beginning and 177.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:17,164 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.27 ms. Allocated memory is still 139.5 MB. Free memory was 104.5 MB in the beginning and 93.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.57 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.9 MB in the beginning and 180.6 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.88 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 162.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1602.24 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 161.9 MB in the beginning and 177.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.2 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: 669#true or 950#(and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) ([#1{~SIZE~0 = [-32768;32767]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 669#true or 950#(and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) ([#1{~SIZE~0 = [-32768;32767]; }]): 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...