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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:56:34,124 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 00:56:34,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:56:34,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:56:34,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:56:34,193 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 [2019-10-07 00:56:34,216 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:56:34,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:56:34,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:56:34,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:56:34,219 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:56:34,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:56:34,219 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:56:34,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:56:34,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:56:34,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:56:34,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:56:34,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:56:34,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:56:34,222 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:56:34,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:56:34,223 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:56:34,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:56:34,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:56:34,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:56:34,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:56:34,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:56:34,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:56:34,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:56:34,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:56:34,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:56:34,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:56:34,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:56:34,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:56:34,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:56:34,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:56:34,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:56:34,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:56:34,548 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:56:34,548 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:56:34,549 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2019-10-07 00:56:34,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92f1d969c/7d1299193a8d40bdbdfa6067fdf113c0/FLAGdefaf19c3 [2019-10-07 00:56:35,192 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:56:35,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2019-10-07 00:56:35,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92f1d969c/7d1299193a8d40bdbdfa6067fdf113c0/FLAGdefaf19c3 [2019-10-07 00:56:35,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92f1d969c/7d1299193a8d40bdbdfa6067fdf113c0 [2019-10-07 00:56:35,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:56:35,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:56:35,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:56:35,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:56:35,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:56:35,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:56:35" (1/1) ... [2019-10-07 00:56:35,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8f9260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:35, skipping insertion in model container [2019-10-07 00:56:35,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:56:35" (1/1) ... [2019-10-07 00:56:35,482 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:56:35,528 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:56:36,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:56:36,080 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:56:36,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:56:36,228 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:56:36,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36 WrapperNode [2019-10-07 00:56:36,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:56:36,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:56:36,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:56:36,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:56:36,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (1/1) ... [2019-10-07 00:56:36,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (1/1) ... [2019-10-07 00:56:36,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (1/1) ... [2019-10-07 00:56:36,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (1/1) ... [2019-10-07 00:56:36,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (1/1) ... [2019-10-07 00:56:36,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (1/1) ... [2019-10-07 00:56:36,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (1/1) ... [2019-10-07 00:56:36,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:56:36,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:56:36,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:56:36,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:56:36,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (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 [2019-10-07 00:56:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:56:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:56:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:56:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:56:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:56:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:56:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:56:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:56:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:56:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:56:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:56:38,364 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:56:38,365 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:56:38,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:56:38 BoogieIcfgContainer [2019-10-07 00:56:38,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:56:38,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:56:38,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:56:38,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:56:38,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:56:35" (1/3) ... [2019-10-07 00:56:38,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c52b16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:56:38, skipping insertion in model container [2019-10-07 00:56:38,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:36" (2/3) ... [2019-10-07 00:56:38,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c52b16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:56:38, skipping insertion in model container [2019-10-07 00:56:38,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:56:38" (3/3) ... [2019-10-07 00:56:38,376 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2019-10-07 00:56:38,386 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:56:38,394 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:56:38,406 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:56:38,433 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:56:38,433 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:56:38,434 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:56:38,434 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:56:38,434 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:56:38,434 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:56:38,434 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:56:38,434 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:56:38,455 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-07 00:56:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 00:56:38,465 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:38,466 INFO L385 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, 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, 1] [2019-10-07 00:56:38,468 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:38,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:38,475 INFO L82 PathProgramCache]: Analyzing trace with hash 826810913, now seen corresponding path program 1 times [2019-10-07 00:56:38,484 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:38,485 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:38,485 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:38,485 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:38,967 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:38,968 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:38,969 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:56:38,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:56:38,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:56:38,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:38,991 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-07 00:56:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:39,534 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-07 00:56:39,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:56:39,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-07 00:56:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:39,559 INFO L225 Difference]: With dead ends: 246 [2019-10-07 00:56:39,559 INFO L226 Difference]: Without dead ends: 157 [2019-10-07 00:56:39,567 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-07 00:56:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-07 00:56:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-07 00:56:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 273 transitions. [2019-10-07 00:56:39,678 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 273 transitions. Word has length 77 [2019-10-07 00:56:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:39,680 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 273 transitions. [2019-10-07 00:56:39,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:56:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 273 transitions. [2019-10-07 00:56:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-07 00:56:39,688 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:39,688 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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] [2019-10-07 00:56:39,689 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:39,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:39,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1195675720, now seen corresponding path program 1 times [2019-10-07 00:56:39,690 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:39,691 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:39,691 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:39,691 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:39,862 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:39,862 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:39,862 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:56:39,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:56:39,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:56:39,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:56:39,865 INFO L87 Difference]: Start difference. First operand 157 states and 273 transitions. Second operand 6 states. [2019-10-07 00:56:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:40,513 INFO L93 Difference]: Finished difference Result 479 states and 861 transitions. [2019-10-07 00:56:40,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:56:40,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-07 00:56:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:40,520 INFO L225 Difference]: With dead ends: 479 [2019-10-07 00:56:40,520 INFO L226 Difference]: Without dead ends: 327 [2019-10-07 00:56:40,522 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:56:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-07 00:56:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2019-10-07 00:56:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-10-07 00:56:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 544 transitions. [2019-10-07 00:56:40,578 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 544 transitions. Word has length 87 [2019-10-07 00:56:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:40,579 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 544 transitions. [2019-10-07 00:56:40,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:56:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 544 transitions. [2019-10-07 00:56:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-07 00:56:40,582 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:40,583 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-10-07 00:56:40,583 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:40,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:40,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2128697324, now seen corresponding path program 1 times [2019-10-07 00:56:40,584 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:40,584 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:40,584 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:40,584 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:40,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:40,681 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:40,682 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:40,682 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:56:40,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:56:40,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:56:40,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:40,684 INFO L87 Difference]: Start difference. First operand 315 states and 544 transitions. Second operand 3 states. [2019-10-07 00:56:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:41,078 INFO L93 Difference]: Finished difference Result 852 states and 1516 transitions. [2019-10-07 00:56:41,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:56:41,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-07 00:56:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:41,087 INFO L225 Difference]: With dead ends: 852 [2019-10-07 00:56:41,087 INFO L226 Difference]: Without dead ends: 542 [2019-10-07 00:56:41,089 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2019-10-07 00:56:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2019-10-07 00:56:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-10-07 00:56:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 850 transitions. [2019-10-07 00:56:41,117 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 850 transitions. Word has length 88 [2019-10-07 00:56:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:41,118 INFO L462 AbstractCegarLoop]: Abstraction has 542 states and 850 transitions. [2019-10-07 00:56:41,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:56:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 850 transitions. [2019-10-07 00:56:41,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-07 00:56:41,121 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:41,121 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-10-07 00:56:41,121 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:41,122 INFO L82 PathProgramCache]: Analyzing trace with hash -847302476, now seen corresponding path program 1 times [2019-10-07 00:56:41,122 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:41,122 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:41,123 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:41,123 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:41,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:41,233 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:41,233 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:41,233 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:56:41,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:56:41,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:56:41,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:41,236 INFO L87 Difference]: Start difference. First operand 542 states and 850 transitions. Second operand 3 states. [2019-10-07 00:56:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:41,665 INFO L93 Difference]: Finished difference Result 1381 states and 2245 transitions. [2019-10-07 00:56:41,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:56:41,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2019-10-07 00:56:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:41,672 INFO L225 Difference]: With dead ends: 1381 [2019-10-07 00:56:41,672 INFO L226 Difference]: Without dead ends: 844 [2019-10-07 00:56:41,675 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2019-10-07 00:56:41,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2019-10-07 00:56:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2019-10-07 00:56:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1310 transitions. [2019-10-07 00:56:41,713 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1310 transitions. Word has length 89 [2019-10-07 00:56:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:41,714 INFO L462 AbstractCegarLoop]: Abstraction has 844 states and 1310 transitions. [2019-10-07 00:56:41,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:56:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1310 transitions. [2019-10-07 00:56:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-07 00:56:41,718 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:41,719 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 00:56:41,719 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:41,720 INFO L82 PathProgramCache]: Analyzing trace with hash -848490688, now seen corresponding path program 1 times [2019-10-07 00:56:41,720 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:41,720 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:41,721 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:41,721 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:41,978 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:41,979 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:41,979 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:56:41,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:56:41,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:56:41,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:56:41,980 INFO L87 Difference]: Start difference. First operand 844 states and 1310 transitions. Second operand 6 states. [2019-10-07 00:56:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:42,663 INFO L93 Difference]: Finished difference Result 2029 states and 3210 transitions. [2019-10-07 00:56:42,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 00:56:42,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-07 00:56:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:42,676 INFO L225 Difference]: With dead ends: 2029 [2019-10-07 00:56:42,676 INFO L226 Difference]: Without dead ends: 1113 [2019-10-07 00:56:42,681 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:56:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2019-10-07 00:56:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 953. [2019-10-07 00:56:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2019-10-07 00:56:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1450 transitions. [2019-10-07 00:56:42,732 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1450 transitions. Word has length 130 [2019-10-07 00:56:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:42,733 INFO L462 AbstractCegarLoop]: Abstraction has 953 states and 1450 transitions. [2019-10-07 00:56:42,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:56:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1450 transitions. [2019-10-07 00:56:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 00:56:42,739 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:42,740 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 00:56:42,740 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:42,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:42,740 INFO L82 PathProgramCache]: Analyzing trace with hash -935797971, now seen corresponding path program 1 times [2019-10-07 00:56:42,741 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:42,741 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:42,741 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:42,741 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:43,043 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:43,043 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:56:43,043 INFO L95 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 [2019-10-07 00:56:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:43,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-07 00:56:43,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:56:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:43,289 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:56:43,535 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-10-07 00:56:43,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:56:43,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:56:43,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:56:43,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:56:43,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:56:43,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:56:43,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:56:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:43,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:56:43,817 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-07 00:56:43,817 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:56:43,824 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:56:43,833 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:56:43,834 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:56:44,189 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-07 00:56:44,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:44,596 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) 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) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:56:44,606 INFO L168 Benchmark]: Toolchain (without parser) took 9140.19 ms. Allocated memory was 137.9 MB in the beginning and 338.7 MB in the end (delta: 200.8 MB). Free memory was 101.6 MB in the beginning and 197.8 MB in the end (delta: -96.1 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:44,607 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 00:56:44,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.89 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 101.4 MB in the beginning and 170.6 MB in the end (delta: -69.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:44,610 INFO L168 Benchmark]: Boogie Preprocessor took 115.87 ms. Allocated memory is still 204.5 MB. Free memory was 170.6 MB in the beginning and 165.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:44,612 INFO L168 Benchmark]: RCFGBuilder took 2019.92 ms. Allocated memory was 204.5 MB in the beginning and 252.2 MB in the end (delta: 47.7 MB). Free memory was 165.6 MB in the beginning and 212.8 MB in the end (delta: -47.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:44,615 INFO L168 Benchmark]: TraceAbstraction took 6235.16 ms. Allocated memory was 252.2 MB in the beginning and 338.7 MB in the end (delta: 86.5 MB). Free memory was 212.8 MB in the beginning and 197.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 101.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:44,625 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 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.89 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 101.4 MB in the beginning and 170.6 MB in the end (delta: -69.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.87 ms. Allocated memory is still 204.5 MB. Free memory was 170.6 MB in the beginning and 165.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2019.92 ms. Allocated memory was 204.5 MB in the beginning and 252.2 MB in the end (delta: 47.7 MB). Free memory was 165.6 MB in the beginning and 212.8 MB in the end (delta: -47.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6235.16 ms. Allocated memory was 252.2 MB in the beginning and 338.7 MB in the end (delta: 86.5 MB). Free memory was 212.8 MB in the beginning and 197.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 101.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...