/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:20:52,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:20:52,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:20:52,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:20:52,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:20:52,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:20:52,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:20:53,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:20:53,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:20:53,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:20:53,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:20:53,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:20:53,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:20:53,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:20:53,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:20:53,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:20:53,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:20:53,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:20:53,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:20:53,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:20:53,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:20:53,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:20:53,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:20:53,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:20:53,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:20:53,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:20:53,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:20:53,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:20:53,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-23 23:20:53,060 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:20:53,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:20:53,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:20:53,061 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:20:53,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:20:53,062 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:20:53,062 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:20:53,062 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:20:53,062 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:20:53,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:20:53,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:20:53,063 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:20:53,063 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:20:53,063 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:20:53,064 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:20:53,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:20:53,064 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:20:53,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:20:53,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:20:53,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:20:53,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:20:53,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:20:53,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:20:53,066 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:20:53,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:20:53,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:20:53,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:20:53,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:20:53,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:20:53,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:20:53,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:20:53,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:20:53,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:20:53,068 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:20:53,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:20:53,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:20:53,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:20:53,068 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:20:53,348 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:20:53,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:20:53,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:20:53,366 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:20:53,366 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:20:53,367 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c [2019-11-23 23:20:53,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff03dcbb3/64b7574794454824bbf3ebddb203aac8/FLAGf67b9fd0f [2019-11-23 23:20:53,857 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:20:53,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c [2019-11-23 23:20:53,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff03dcbb3/64b7574794454824bbf3ebddb203aac8/FLAGf67b9fd0f [2019-11-23 23:20:54,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff03dcbb3/64b7574794454824bbf3ebddb203aac8 [2019-11-23 23:20:54,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:20:54,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:20:54,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:20:54,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:20:54,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:20:54,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2158fff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54, skipping insertion in model container [2019-11-23 23:20:54,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:20:54,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:20:54,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:20:54,562 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:20:54,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:20:54,610 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:20:54,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54 WrapperNode [2019-11-23 23:20:54,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:20:54,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:20:54,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:20:54,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:20:54,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:20:54,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:20:54,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:20:54,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:20:54,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (1/1) ... [2019-11-23 23:20:54,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:20:54,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:20:54,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:20:54,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:20:54,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (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 [2019-11-23 23:20:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:20:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:20:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:20:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:20:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:20:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:20:55,218 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:20:55,219 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-23 23:20:55,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:20:55 BoogieIcfgContainer [2019-11-23 23:20:55,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:20:55,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:20:55,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:20:55,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:20:55,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:20:54" (1/3) ... [2019-11-23 23:20:55,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de8751c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:20:55, skipping insertion in model container [2019-11-23 23:20:55,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:54" (2/3) ... [2019-11-23 23:20:55,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de8751c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:20:55, skipping insertion in model container [2019-11-23 23:20:55,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:20:55" (3/3) ... [2019-11-23 23:20:55,229 INFO L109 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2019-11-23 23:20:55,239 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:20:55,247 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:20:55,258 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:20:55,279 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:20:55,279 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:20:55,279 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:20:55,279 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:20:55,279 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:20:55,279 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:20:55,279 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:20:55,279 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:20:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-23 23:20:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:20:55,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:20:55,297 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:20:55,298 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:20:55,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:20:55,304 INFO L82 PathProgramCache]: Analyzing trace with hash -970074386, now seen corresponding path program 1 times [2019-11-23 23:20:55,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:20:55,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028853870] [2019-11-23 23:20:55,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:20:55,389 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:20:55,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225800161] [2019-11-23 23:20:55,390 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 [2019-11-23 23:20:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:20:55,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:20:55,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:20:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:20:55,515 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:20:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:20:55,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028853870] [2019-11-23 23:20:55,533 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:20:55,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225800161] [2019-11-23 23:20:55,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:20:55,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-23 23:20:55,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51967774] [2019-11-23 23:20:55,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:20:55,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:20:55,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:20:55,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:20:55,565 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-23 23:20:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:20:55,662 INFO L93 Difference]: Finished difference Result 24 states and 37 transitions. [2019-11-23 23:20:55,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:20:55,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-23 23:20:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:20:55,678 INFO L225 Difference]: With dead ends: 24 [2019-11-23 23:20:55,679 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 23:20:55,684 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:20:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 23:20:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-23 23:20:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-23 23:20:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2019-11-23 23:20:55,733 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 7 [2019-11-23 23:20:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:20:55,734 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-11-23 23:20:55,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:20:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 22 transitions. [2019-11-23 23:20:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 23:20:55,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:20:55,736 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:20:55,941 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:20:55,942 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:20:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:20:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1494654434, now seen corresponding path program 1 times [2019-11-23 23:20:55,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:20:55,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509234168] [2019-11-23 23:20:55,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:20:55,952 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:20:55,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898809999] [2019-11-23 23:20:55,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:20:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:20:55,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:20:56,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:20:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:20:56,023 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:20:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:20:56,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509234168] [2019-11-23 23:20:56,041 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:20:56,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898809999] [2019-11-23 23:20:56,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:20:56,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-23 23:20:56,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118744312] [2019-11-23 23:20:56,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 23:20:56,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:20:56,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 23:20:56,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-23 23:20:56,045 INFO L87 Difference]: Start difference. First operand 15 states and 22 transitions. Second operand 6 states. [2019-11-23 23:20:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:20:56,151 INFO L93 Difference]: Finished difference Result 40 states and 61 transitions. [2019-11-23 23:20:56,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 23:20:56,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-23 23:20:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:20:56,153 INFO L225 Difference]: With dead ends: 40 [2019-11-23 23:20:56,153 INFO L226 Difference]: Without dead ends: 29 [2019-11-23 23:20:56,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-23 23:20:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-23 23:20:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-23 23:20:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 23:20:56,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2019-11-23 23:20:56,165 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 11 [2019-11-23 23:20:56,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:20:56,165 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2019-11-23 23:20:56,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 23:20:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2019-11-23 23:20:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 23:20:56,166 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:20:56,167 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:20:56,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:20:56,371 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:20:56,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:20:56,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1967251718, now seen corresponding path program 1 times [2019-11-23 23:20:56,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:20:56,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026646228] [2019-11-23 23:20:56,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:20:56,378 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:20:56,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304038257] [2019-11-23 23:20:56,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:20:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:20:56,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:20:56,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:20:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-23 23:20:56,460 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:20:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-23 23:20:56,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026646228] [2019-11-23 23:20:56,484 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:20:56,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304038257] [2019-11-23 23:20:56,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:20:56,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-23 23:20:56,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760547109] [2019-11-23 23:20:56,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 23:20:56,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:20:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 23:20:56,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-23 23:20:56,488 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 6 states. [2019-11-23 23:20:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:20:56,600 INFO L93 Difference]: Finished difference Result 67 states and 101 transitions. [2019-11-23 23:20:56,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 23:20:56,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-23 23:20:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:20:56,602 INFO L225 Difference]: With dead ends: 67 [2019-11-23 23:20:56,602 INFO L226 Difference]: Without dead ends: 45 [2019-11-23 23:20:56,603 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-23 23:20:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-23 23:20:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-11-23 23:20:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-23 23:20:56,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2019-11-23 23:20:56,614 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 19 [2019-11-23 23:20:56,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:20:56,614 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2019-11-23 23:20:56,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 23:20:56,615 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2019-11-23 23:20:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-23 23:20:56,615 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:20:56,616 INFO L410 BasicCegarLoop]: trace histogram [8, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:20:56,819 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:20:56,820 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:20:56,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:20:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash -156781050, now seen corresponding path program 1 times [2019-11-23 23:20:56,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:20:56,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644444750] [2019-11-23 23:20:56,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:20:56,834 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:20:56,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975623819] [2019-11-23 23:20:56,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:20:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:20:56,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 23:20:56,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:20:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-11-23 23:20:56,930 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:20:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-11-23 23:20:56,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644444750] [2019-11-23 23:20:56,972 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:20:56,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975623819] [2019-11-23 23:20:56,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [210676806] [2019-11-23 23:20:57,019 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-23 23:20:57,020 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:20:57,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:20:57,031 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:20:57,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:20:57,513 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:57,898 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:57,920 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:57,952 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:57,963 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,553 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,568 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,622 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,684 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,801 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,813 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,826 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,837 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:58,982 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 171 [2019-11-23 23:20:59,267 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 179 [2019-11-23 23:20:59,456 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,475 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,493 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,508 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,622 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,737 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,753 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,768 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,783 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,797 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,810 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:20:59,880 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:00,079 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 207 [2019-11-23 23:21:00,186 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 207 [2019-11-23 23:21:00,290 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2019-11-23 23:21:00,874 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:00,991 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,007 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,022 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,039 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,053 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,067 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,083 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,148 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,250 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,264 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,358 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,374 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,605 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,664 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,714 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,747 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,754 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,894 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,956 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,965 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,973 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:01,980 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,039 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,046 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,390 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,455 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,465 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,479 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,658 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,694 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,834 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,845 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:02,975 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,119 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,163 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,194 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,213 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,225 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,363 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,371 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,401 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,518 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,525 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,532 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,539 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,825 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,857 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,937 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:03,971 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:04,115 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:04,128 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:04,188 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:04,249 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:04,311 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:04,411 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-23 23:21:04,729 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:21:04,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 23:21:04,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-23 23:21:04,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384889946] [2019-11-23 23:21:04,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 23:21:04,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:21:04,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 23:21:04,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-11-23 23:21:04,732 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 10 states. [2019-11-23 23:21:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:21:04,878 INFO L93 Difference]: Finished difference Result 129 states and 181 transitions. [2019-11-23 23:21:04,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 23:21:04,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2019-11-23 23:21:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:21:04,880 INFO L225 Difference]: With dead ends: 129 [2019-11-23 23:21:04,881 INFO L226 Difference]: Without dead ends: 93 [2019-11-23 23:21:04,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2019-11-23 23:21:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-23 23:21:04,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2019-11-23 23:21:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-23 23:21:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2019-11-23 23:21:04,895 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 27 [2019-11-23 23:21:04,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:21:04,895 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2019-11-23 23:21:04,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 23:21:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2019-11-23 23:21:04,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-23 23:21:04,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:21:04,897 INFO L410 BasicCegarLoop]: trace histogram [24, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:21:05,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:21:05,109 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:21:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:21:05,109 INFO L82 PathProgramCache]: Analyzing trace with hash -624164858, now seen corresponding path program 2 times [2019-11-23 23:21:05,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:21:05,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737400790] [2019-11-23 23:21:05,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:21:05,118 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:21:05,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135231681] [2019-11-23 23:21:05,118 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:21:05,422 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-23 23:21:05,422 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 23:21:05,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 23:21:05,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:21:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 154 proven. 21 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2019-11-23 23:21:05,501 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:21:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 7 proven. 168 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2019-11-23 23:21:05,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737400790] [2019-11-23 23:21:05,582 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:21:05,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135231681] [2019-11-23 23:21:05,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1813232534] [2019-11-23 23:21:05,584 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-23 23:21:05,584 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:21:05,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:21:05,584 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:21:05,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:21:05,714 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:05,898 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:05,905 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:05,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:05,977 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,281 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,293 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,310 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,353 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,373 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,399 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,466 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,478 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,530 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:06,541 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,210 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,359 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,379 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,471 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,517 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,539 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,557 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,571 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,629 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,644 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,656 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,669 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,703 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,741 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,753 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:07,785 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,009 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,055 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,069 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,129 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,134 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,220 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,227 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,329 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,335 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,341 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,348 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,431 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,736 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,958 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,966 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:08,975 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,014 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,027 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,071 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,078 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,152 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,159 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,189 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,302 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,353 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,360 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,366 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,394 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,525 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,537 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,670 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,720 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,764 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:09,774 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,086 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,095 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,103 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,159 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,168 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,205 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,310 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,324 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,336 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,400 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,414 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,657 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:10,786 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-23 23:21:11,154 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2019-11-23 23:21:11,155 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:21:11,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 23:21:11,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2019-11-23 23:21:11,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176412451] [2019-11-23 23:21:11,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-23 23:21:11,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:21:11,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-23 23:21:11,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2019-11-23 23:21:11,157 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 18 states. [2019-11-23 23:21:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:21:11,529 INFO L93 Difference]: Finished difference Result 261 states and 353 transitions. [2019-11-23 23:21:11,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-23 23:21:11,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2019-11-23 23:21:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:21:11,531 INFO L225 Difference]: With dead ends: 261 [2019-11-23 23:21:11,531 INFO L226 Difference]: Without dead ends: 189 [2019-11-23 23:21:11,534 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2019-11-23 23:21:11,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-11-23 23:21:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 162. [2019-11-23 23:21:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-23 23:21:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 199 transitions. [2019-11-23 23:21:11,561 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 199 transitions. Word has length 43 [2019-11-23 23:21:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:21:11,561 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 199 transitions. [2019-11-23 23:21:11,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-23 23:21:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 199 transitions. [2019-11-23 23:21:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-23 23:21:11,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:21:11,564 INFO L410 BasicCegarLoop]: trace histogram [56, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:21:11,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:21:11,767 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:21:11,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:21:11,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1950936058, now seen corresponding path program 3 times [2019-11-23 23:21:11,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:21:11,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155104937] [2019-11-23 23:21:11,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:21:11,777 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:21:11,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014290984] [2019-11-23 23:21:11,778 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:21:11,852 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 23:21:11,852 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 23:21:11,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-23 23:21:11,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:21:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 1002 proven. 242 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-11-23 23:21:12,101 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:21:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 1002 proven. 242 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-11-23 23:21:12,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155104937] [2019-11-23 23:21:12,340 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:21:12,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014290984] [2019-11-23 23:21:12,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1718123085] [2019-11-23 23:21:12,342 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-23 23:21:12,342 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:21:12,342 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:21:12,343 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:21:12,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:21:12,454 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,568 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,606 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,614 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,622 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,852 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,916 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,927 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,980 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:12,990 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,001 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,012 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,031 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,040 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,567 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,580 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,592 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,603 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,677 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,690 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,700 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,719 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,732 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,798 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,867 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,925 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,976 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:13,993 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,158 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,168 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,380 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,445 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,451 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,467 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,486 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,610 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,618 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,652 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,718 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,723 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,761 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,767 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:14,977 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,096 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,105 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,152 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,253 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,287 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,295 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,304 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,335 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,410 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,443 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,450 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,591 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,647 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,679 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,687 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,693 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,805 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,830 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,838 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,913 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:15,923 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,005 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,018 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,261 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,269 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,422 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,434 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,457 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,508 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,516 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,526 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,596 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,704 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,712 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:16,785 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-23 23:21:17,215 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:21:17,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 23:21:17,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2019-11-23 23:21:17,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848110642] [2019-11-23 23:21:17,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-23 23:21:17,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:21:17,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-23 23:21:17,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=1310, Unknown=0, NotChecked=0, Total=1892 [2019-11-23 23:21:17,217 INFO L87 Difference]: Start difference. First operand 162 states and 199 transitions. Second operand 38 states. [2019-11-23 23:21:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:21:18,731 INFO L93 Difference]: Finished difference Result 670 states and 783 transitions. [2019-11-23 23:21:18,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-11-23 23:21:18,732 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 75 [2019-11-23 23:21:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:21:18,737 INFO L225 Difference]: With dead ends: 670 [2019-11-23 23:21:18,738 INFO L226 Difference]: Without dead ends: 543 [2019-11-23 23:21:18,743 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3383 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2975, Invalid=6727, Unknown=0, NotChecked=0, Total=9702 [2019-11-23 23:21:18,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-11-23 23:21:18,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 466. [2019-11-23 23:21:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-11-23 23:21:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 571 transitions. [2019-11-23 23:21:18,786 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 571 transitions. Word has length 75 [2019-11-23 23:21:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:21:18,786 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 571 transitions. [2019-11-23 23:21:18,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-23 23:21:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 571 transitions. [2019-11-23 23:21:18,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-23 23:21:18,794 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:21:18,794 INFO L410 BasicCegarLoop]: trace histogram [168, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:21:18,998 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:21:18,999 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:21:18,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:21:18,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1513840562, now seen corresponding path program 4 times [2019-11-23 23:21:19,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:21:19,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619290192] [2019-11-23 23:21:19,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:21:19,016 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:21:19,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619123319] [2019-11-23 23:21:19,017 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:21:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:21:19,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-23 23:21:19,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:21:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16204 backedges. 2490 proven. 105 refuted. 0 times theorem prover too weak. 13609 trivial. 0 not checked. [2019-11-23 23:21:19,409 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:21:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16204 backedges. 2490 proven. 105 refuted. 0 times theorem prover too weak. 13609 trivial. 0 not checked. [2019-11-23 23:21:19,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619290192] [2019-11-23 23:21:19,740 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:21:19,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619123319] [2019-11-23 23:21:19,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1975594095] [2019-11-23 23:21:19,741 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-23 23:21:19,742 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:21:19,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:21:19,742 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:21:19,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:21:19,837 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:19,953 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:19,984 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,005 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,030 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,237 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,247 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,256 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,265 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,323 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,398 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,406 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,642 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,655 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,731 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,742 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,820 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,832 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,849 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,860 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,900 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:20,985 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,350 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,382 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,414 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,505 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,562 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,600 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,610 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,619 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:21,629 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,183 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,224 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,233 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,296 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,309 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,323 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,336 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,350 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,475 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,558 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,591 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,609 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,621 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,633 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,676 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,868 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,963 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,970 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:22,998 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,007 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,137 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,160 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,187 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,259 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,265 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,324 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,332 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,509 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,578 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,617 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,728 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,812 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,911 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:23,981 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,034 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,076 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,173 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,232 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,237 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,243 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,280 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,343 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,369 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,385 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,393 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,478 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,484 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,490 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,708 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,751 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,816 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,924 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,965 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:24,973 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:25,011 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:25,095 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:25,105 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:25,154 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:25,162 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:21:25,286 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-23 23:21:25,630 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:21:25,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 23:21:25,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2019-11-23 23:21:25,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362700869] [2019-11-23 23:21:25,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-23 23:21:25,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:21:25,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-23 23:21:25,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=1003, Unknown=0, NotChecked=0, Total=1560 [2019-11-23 23:21:25,632 INFO L87 Difference]: Start difference. First operand 466 states and 571 transitions. Second operand 34 states. [2019-11-23 23:21:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:21:26,458 INFO L93 Difference]: Finished difference Result 1453 states and 2017 transitions. [2019-11-23 23:21:26,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-23 23:21:26,458 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 203 [2019-11-23 23:21:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:21:26,466 INFO L225 Difference]: With dead ends: 1453 [2019-11-23 23:21:26,466 INFO L226 Difference]: Without dead ends: 1005 [2019-11-23 23:21:26,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1067, Invalid=1903, Unknown=0, NotChecked=0, Total=2970 [2019-11-23 23:21:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2019-11-23 23:21:26,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 946. [2019-11-23 23:21:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2019-11-23 23:21:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1147 transitions. [2019-11-23 23:21:26,527 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1147 transitions. Word has length 203 [2019-11-23 23:21:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:21:26,527 INFO L462 AbstractCegarLoop]: Abstraction has 946 states and 1147 transitions. [2019-11-23 23:21:26,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-23 23:21:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1147 transitions. [2019-11-23 23:21:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2019-11-23 23:21:26,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:21:26,543 INFO L410 BasicCegarLoop]: trace histogram [360, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:21:26,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:21:26,752 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:21:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:21:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1970387022, now seen corresponding path program 5 times [2019-11-23 23:21:26,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:21:26,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74717460] [2019-11-23 23:21:26,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:21:26,769 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:21:26,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136979269] [2019-11-23 23:21:26,769 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true