/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/nla-digbench/cohencu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:28:53,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:28:53,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:28:53,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:28:53,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:28:53,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:28:53,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:28:53,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:28:53,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:28:53,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:28:53,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:28:53,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:28:53,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:28:53,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:28:53,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:28:53,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:28:53,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:28:53,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:28:53,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:28:53,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:28:53,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:28:53,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:28:53,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:28:53,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:28:53,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:28:53,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:28:53,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:28:53,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:28:53,099 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 [2019-11-24 04:28:53,115 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:28:53,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:28:53,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:28:53,116 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:28:53,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:28:53,116 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:28:53,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:28:53,117 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:28:53,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:28:53,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:28:53,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:28:53,118 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:28:53,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:28:53,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:28:53,118 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:28:53,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:28:53,119 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:28:53,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:28:53,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:28:53,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:28:53,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:28:53,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:28:53,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:28:53,121 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:28:53,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:28:53,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:28:53,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:28:53,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:28:53,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:28:53,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:28:53,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:28:53,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:28:53,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:28:53,123 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:28:53,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:28:53,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:28:53,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:28:53,123 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:28:53,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:28:53,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:28:53,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:28:53,438 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:28:53,439 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:28:53,439 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohencu.c [2019-11-24 04:28:53,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aab3ae83b/804963c34bb34cdc8915f754a35f795b/FLAG886cfbe71 [2019-11-24 04:28:54,001 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:28:54,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu.c [2019-11-24 04:28:54,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aab3ae83b/804963c34bb34cdc8915f754a35f795b/FLAG886cfbe71 [2019-11-24 04:28:54,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aab3ae83b/804963c34bb34cdc8915f754a35f795b [2019-11-24 04:28:54,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:28:54,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:28:54,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:28:54,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:28:54,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:28:54,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411efff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54, skipping insertion in model container [2019-11-24 04:28:54,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:28:54,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:28:54,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:28:54,702 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:28:54,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:28:54,772 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:28:54,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54 WrapperNode [2019-11-24 04:28:54,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:28:54,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:28:54,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:28:54,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:28:54,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:28:54,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:28:54,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:28:54,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:28:54,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (1/1) ... [2019-11-24 04:28:54,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:28:54,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:28:54,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:28:54,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:28:54,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (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 [2019-11-24 04:28:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:28:55,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:28:55,370 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:28:55,370 INFO L284 CfgBuilder]: Removed 27 assume(true) statements. [2019-11-24 04:28:55,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:28:55 BoogieIcfgContainer [2019-11-24 04:28:55,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:28:55,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:28:55,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:28:55,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:28:55,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:28:54" (1/3) ... [2019-11-24 04:28:55,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cb1a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:28:55, skipping insertion in model container [2019-11-24 04:28:55,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:28:54" (2/3) ... [2019-11-24 04:28:55,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cb1a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:28:55, skipping insertion in model container [2019-11-24 04:28:55,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:28:55" (3/3) ... [2019-11-24 04:28:55,379 INFO L109 eAbstractionObserver]: Analyzing ICFG cohencu.c [2019-11-24 04:28:55,389 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:28:55,396 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-24 04:28:55,407 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-24 04:28:55,430 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:28:55,430 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:28:55,430 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:28:55,430 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:28:55,431 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:28:55,431 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:28:55,431 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:28:55,431 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:28:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-11-24 04:28:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:28:55,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:28:55,453 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:28:55,454 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:28:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:28:55,459 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-24 04:28:55,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:28:55,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341414434] [2019-11-24 04:28:55,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:28:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:28:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:55,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341414434] [2019-11-24 04:28:55,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:28:55,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:28:55,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170751380] [2019-11-24 04:28:55,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:28:55,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:28:55,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:28:55,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:28:55,689 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2019-11-24 04:28:55,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:28:55,922 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2019-11-24 04:28:55,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:28:55,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-24 04:28:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:28:55,934 INFO L225 Difference]: With dead ends: 92 [2019-11-24 04:28:55,935 INFO L226 Difference]: Without dead ends: 43 [2019-11-24 04:28:55,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:28:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-24 04:28:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-24 04:28:55,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-24 04:28:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-11-24 04:28:55,977 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 4 [2019-11-24 04:28:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:28:55,978 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-11-24 04:28:55,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:28:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-11-24 04:28:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:28:55,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:28:55,979 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:28:55,980 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:28:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:28:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-24 04:28:55,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:28:55,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884125012] [2019-11-24 04:28:55,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:28:55,990 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:28:55,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609242801] [2019-11-24 04:28:55,991 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 [2019-11-24 04:28:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:28:56,025 WARN L253 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-24 04:28:56,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:28:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:56,118 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:28:56,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:28:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:56,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884125012] [2019-11-24 04:28:56,205 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:28:56,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609242801] [2019-11-24 04:28:56,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:28:56,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-24 04:28:56,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701636388] [2019-11-24 04:28:56,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-24 04:28:56,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:28:56,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-24 04:28:56,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:28:56,210 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2019-11-24 04:28:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:28:56,652 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2019-11-24 04:28:56,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-24 04:28:56,653 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 6 [2019-11-24 04:28:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:28:56,655 INFO L225 Difference]: With dead ends: 83 [2019-11-24 04:28:56,655 INFO L226 Difference]: Without dead ends: 75 [2019-11-24 04:28:56,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2019-11-24 04:28:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-24 04:28:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2019-11-24 04:28:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:28:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2019-11-24 04:28:56,671 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 6 [2019-11-24 04:28:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:28:56,671 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2019-11-24 04:28:56,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-24 04:28:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2019-11-24 04:28:56,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:28:56,672 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:28:56,672 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:28:56,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:28:56,878 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:28:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:28:56,879 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-24 04:28:56,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:28:56,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34830528] [2019-11-24 04:28:56,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:28:56,890 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:28:56,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14521495] [2019-11-24 04:28:56,890 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 [2019-11-24 04:28:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:28:56,922 WARN L253 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-24 04:28:56,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:28:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:56,987 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:28:57,039 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:28:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:57,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34830528] [2019-11-24 04:28:57,065 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:28:57,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14521495] [2019-11-24 04:28:57,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:28:57,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-24 04:28:57,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622903881] [2019-11-24 04:28:57,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-24 04:28:57,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:28:57,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-24 04:28:57,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:28:57,069 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 10 states. [2019-11-24 04:28:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:28:57,302 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2019-11-24 04:28:57,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-24 04:28:57,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-11-24 04:28:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:28:57,304 INFO L225 Difference]: With dead ends: 73 [2019-11-24 04:28:57,304 INFO L226 Difference]: Without dead ends: 69 [2019-11-24 04:28:57,304 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-11-24 04:28:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-24 04:28:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2019-11-24 04:28:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:28:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-11-24 04:28:57,328 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 8 [2019-11-24 04:28:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:28:57,328 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2019-11-24 04:28:57,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-24 04:28:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2019-11-24 04:28:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 04:28:57,329 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:28:57,329 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:28:57,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:28:57,533 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:28:57,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:28:57,534 INFO L82 PathProgramCache]: Analyzing trace with hash 736415253, now seen corresponding path program 1 times [2019-11-24 04:28:57,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:28:57,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116906282] [2019-11-24 04:28:57,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:28:57,541 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:28:57,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190993989] [2019-11-24 04:28:57,542 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) [2019-11-24 04:28:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:28:57,565 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-24 04:28:57,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:28:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:57,634 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:28:57,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:28:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:57,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116906282] [2019-11-24 04:28:57,700 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:28:57,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190993989] [2019-11-24 04:28:57,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:28:57,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-24 04:28:57,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764634421] [2019-11-24 04:28:57,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-24 04:28:57,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:28:57,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-24 04:28:57,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:28:57,705 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 10 states. [2019-11-24 04:28:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:28:58,158 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2019-11-24 04:28:58,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-24 04:28:58,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-11-24 04:28:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:28:58,160 INFO L225 Difference]: With dead ends: 78 [2019-11-24 04:28:58,160 INFO L226 Difference]: Without dead ends: 58 [2019-11-24 04:28:58,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-11-24 04:28:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-24 04:28:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2019-11-24 04:28:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 04:28:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2019-11-24 04:28:58,172 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 10 [2019-11-24 04:28:58,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:28:58,172 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2019-11-24 04:28:58,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-24 04:28:58,173 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2019-11-24 04:28:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 04:28:58,173 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:28:58,173 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:28:58,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:28:58,379 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:28:58,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:28:58,380 INFO L82 PathProgramCache]: Analyzing trace with hash -754418443, now seen corresponding path program 1 times [2019-11-24 04:28:58,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:28:58,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483965583] [2019-11-24 04:28:58,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:28:58,388 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:28:58,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079516838] [2019-11-24 04:28:58,389 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 [2019-11-24 04:28:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:28:58,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 04:28:58,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:28:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:58,512 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:28:58,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:28:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:28:58,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483965583] [2019-11-24 04:28:58,597 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:28:58,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079516838] [2019-11-24 04:28:58,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1926553538] [2019-11-24 04:28:58,622 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-24 04:28:58,623 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:28:58,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:28:58,637 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:28:58,638 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:28:59,580 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 435 DAG size of output: 432 [2019-11-24 04:28:59,781 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 422 DAG size of output: 419 [2019-11-24 04:29:00,039 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 525 DAG size of output: 522 [2019-11-24 04:29:00,379 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 518 DAG size of output: 518 [2019-11-24 04:29:00,783 WARN L192 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 644 DAG size of output: 639 [2019-11-24 04:29:01,248 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 636 DAG size of output: 635 [2019-11-24 04:29:01,721 WARN L192 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 766 DAG size of output: 761 [2019-11-24 04:29:02,402 WARN L192 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 756 DAG size of output: 755 [2019-11-24 04:29:03,141 WARN L192 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 923 DAG size of output: 917 [2019-11-24 04:29:03,965 WARN L192 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 908 DAG size of output: 907 [2019-11-24 04:29:04,898 WARN L192 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 1092 DAG size of output: 1087 [2019-11-24 04:29:06,100 WARN L192 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 1077 DAG size of output: 1064 [2019-11-24 04:29:07,281 WARN L192 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 1069 DAG size of output: 1069 [2019-11-24 04:29:07,887 WARN L192 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 1066 DAG size of output: 1066 [2019-11-24 04:29:09,128 WARN L192 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 1275 DAG size of output: 1269 [2019-11-24 04:29:10,446 WARN L192 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1262 [2019-11-24 04:29:12,203 WARN L192 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 1501 DAG size of output: 1493 [2019-11-24 04:29:14,119 WARN L192 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 1481 DAG size of output: 1480 [2019-11-24 04:29:16,781 WARN L192 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 1754 DAG size of output: 1749 [2019-11-24 04:29:19,784 WARN L192 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 1736 DAG size of output: 1736 [2019-11-24 04:29:24,176 WARN L192 SmtUtils]: Spent 3.94 s on a formula simplification. DAG size of input: 2048 DAG size of output: 2039 [2019-11-24 04:29:29,358 WARN L192 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 2026 DAG size of output: 2023 [2019-11-24 04:29:37,115 WARN L192 SmtUtils]: Spent 6.95 s on a formula simplification. DAG size of input: 2474 DAG size of output: 2462 [2019-11-24 04:29:46,136 WARN L192 SmtUtils]: Spent 6.80 s on a formula simplification. DAG size of input: 2455 DAG size of output: 2454 [2019-11-24 04:29:56,338 WARN L192 SmtUtils]: Spent 7.22 s on a formula simplification that was a NOOP. DAG size: 2464 [2019-11-24 04:30:05,782 WARN L192 SmtUtils]: Spent 7.29 s on a formula simplification. DAG size of input: 2465 DAG size of output: 2465 [2019-11-24 04:30:17,497 WARN L192 SmtUtils]: Spent 10.74 s on a formula simplification. DAG size of input: 2913 DAG size of output: 2900 [2019-11-24 04:30:31,314 WARN L192 SmtUtils]: Spent 10.46 s on a formula simplification. DAG size of input: 2891 DAG size of output: 2890