/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-industry-pattern/array_mul_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:17:26,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:17:26,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:17:26,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:17:26,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:17:26,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:17:26,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:17:26,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:17:26,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:17:26,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:17:26,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:17:26,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:17:26,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:17:26,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:17:26,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:17:26,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:17:26,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:17:26,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:17:26,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:17:26,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:17:26,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:17:26,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:17:26,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:17:26,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:17:26,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:17:26,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:17:26,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:17:26,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:17:26,573 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 23:17:26,587 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:17:26,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:17:26,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:17:26,588 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:17:26,588 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:17:26,589 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:17:26,589 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:17:26,589 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:17:26,589 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:17:26,589 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:17:26,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:17:26,590 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:17:26,590 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:17:26,590 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:17:26,590 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:17:26,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:17:26,591 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:17:26,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:17:26,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:17:26,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:17:26,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:17:26,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:17:26,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:17:26,593 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:17:26,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:17:26,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:17:26,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:17:26,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:17:26,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:17:26,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:17:26,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:17:26,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:17:26,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:17:26,595 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:17:26,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:17:26,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:17:26,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:17:26,595 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:17:26,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:17:26,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:17:26,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:17:26,899 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:17:26,899 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:17:26,900 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_mul_init.i [2019-11-23 23:17:26,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae33b04b/d7d707072af844a6a5a077c428a8febf/FLAG209e19945 [2019-11-23 23:17:27,363 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:17:27,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_mul_init.i [2019-11-23 23:17:27,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae33b04b/d7d707072af844a6a5a077c428a8febf/FLAG209e19945 [2019-11-23 23:17:27,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae33b04b/d7d707072af844a6a5a077c428a8febf [2019-11-23 23:17:27,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:17:27,804 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:17:27,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:17:27,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:17:27,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:17:27,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:17:27" (1/1) ... [2019-11-23 23:17:27,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23379d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:27, skipping insertion in model container [2019-11-23 23:17:27,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:17:27" (1/1) ... [2019-11-23 23:17:27,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:17:27,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:17:28,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:17:28,009 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:17:28,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:17:28,053 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:17:28,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28 WrapperNode [2019-11-23 23:17:28,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:17:28,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:17:28,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:17:28,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:17:28,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:17:28,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:17:28,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:17:28,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:17:28,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (1/1) ... [2019-11-23 23:17:28,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:17:28,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:17:28,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:17:28,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:17:28,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (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 23:17:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:17:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:17:28,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:17:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:17:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:17:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:17:28,863 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:17:28,863 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:17:28,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:17:28 BoogieIcfgContainer [2019-11-23 23:17:28,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:17:28,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:17:28,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:17:28,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:17:28,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:17:27" (1/3) ... [2019-11-23 23:17:28,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699ec0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:17:28, skipping insertion in model container [2019-11-23 23:17:28,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:28" (2/3) ... [2019-11-23 23:17:28,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699ec0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:17:28, skipping insertion in model container [2019-11-23 23:17:28,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:17:28" (3/3) ... [2019-11-23 23:17:28,882 INFO L109 eAbstractionObserver]: Analyzing ICFG array_mul_init.i [2019-11-23 23:17:28,892 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:17:28,903 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:17:28,915 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:17:28,939 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:17:28,940 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:17:28,940 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:17:28,940 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:17:28,940 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:17:28,940 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:17:28,941 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:17:28,941 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:17:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:17:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:17:28,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:17:28,959 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:17:28,959 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:17:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:17:28,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1321422100, now seen corresponding path program 1 times [2019-11-23 23:17:28,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:17:28,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545265850] [2019-11-23 23:17:28,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:17:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:17:29,131 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 23:17:29,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545265850] [2019-11-23 23:17:29,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:17:29,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:17:29,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79882383] [2019-11-23 23:17:29,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:17:29,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:17:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:17:29,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:17:29,157 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 23:17:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:17:29,210 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2019-11-23 23:17:29,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:17:29,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:17:29,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:17:29,223 INFO L225 Difference]: With dead ends: 23 [2019-11-23 23:17:29,223 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 23:17:29,227 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:17:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 23:17:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 10. [2019-11-23 23:17:29,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:17:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-23 23:17:29,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2019-11-23 23:17:29,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:17:29,278 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-23 23:17:29,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:17:29,279 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-23 23:17:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:17:29,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:17:29,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:17:29,281 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:17:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:17:29,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1946354138, now seen corresponding path program 1 times [2019-11-23 23:17:29,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:17:29,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906753753] [2019-11-23 23:17:29,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:17:29,326 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:17:29,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701734558] [2019-11-23 23:17:29,327 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 23:17:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:17:29,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:17:29,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:17:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:17:29,434 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:17:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:17:29,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906753753] [2019-11-23 23:17:29,455 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:17:29,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701734558] [2019-11-23 23:17:29,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1033975335] [2019-11-23 23:17:29,479 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:17:29,480 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:17:29,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:17:29,492 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:17:29,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:18:15,446 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-23 23:18:20,854 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2019-11-23 23:18:29,460 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2019-11-23 23:18:32,522 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 258 [2019-11-23 23:18:35,384 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2019-11-23 23:18:38,393 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2019-11-23 23:18:41,452 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2019-11-23 23:18:44,543 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2019-11-23 23:18:47,715 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2019-11-23 23:18:50,827 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2019-11-23 23:18:54,255 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2019-11-23 23:18:57,620 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2019-11-23 23:19:01,545 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 299