/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-crafted/zero_sum_const_m3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:58:10,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:58:10,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:58:10,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:58:10,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:58:10,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:58:10,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:58:10,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:58:10,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:58:10,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:58:10,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:58:10,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:58:10,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:58:10,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:58:10,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:58:10,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:58:10,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:58:10,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:58:10,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:58:10,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:58:10,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:58:10,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:58:10,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:58:10,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:58:10,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:58:10,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:58:10,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:58:10,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:58:10,403 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 22:58:10,418 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:58:10,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:58:10,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:58:10,419 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:58:10,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:58:10,419 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:58:10,420 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:58:10,420 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:58:10,420 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:58:10,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:58:10,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:58:10,421 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:58:10,421 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:58:10,421 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:58:10,421 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:58:10,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:58:10,422 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:58:10,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:58:10,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:58:10,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:58:10,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:58:10,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:58:10,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:58:10,423 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:58:10,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:58:10,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:58:10,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:58:10,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:58:10,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:58:10,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:58:10,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:58:10,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:58:10,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:58:10,426 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:58:10,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:58:10,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:58:10,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:58:10,426 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:58:10,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:58:10,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:58:10,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:58:10,813 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:58:10,814 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:58:10,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m3.c [2019-11-23 22:58:10,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c089c58a7/6ef467a9150e4da28ee7776ee412195a/FLAG19ab3cdd5 [2019-11-23 22:58:11,270 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:58:11,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m3.c [2019-11-23 22:58:11,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c089c58a7/6ef467a9150e4da28ee7776ee412195a/FLAG19ab3cdd5 [2019-11-23 22:58:11,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c089c58a7/6ef467a9150e4da28ee7776ee412195a [2019-11-23 22:58:11,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:58:11,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:58:11,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:58:11,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:58:11,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:58:11,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:58:11" (1/1) ... [2019-11-23 22:58:11,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5026ca5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:11, skipping insertion in model container [2019-11-23 22:58:11,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:58:11" (1/1) ... [2019-11-23 22:58:11,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:58:11,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:58:11,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:58:11,939 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:58:11,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:58:12,001 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:58:12,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12 WrapperNode [2019-11-23 22:58:12,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:58:12,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:58:12,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:58:12,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:58:12,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:58:12,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:58:12,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:58:12,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:58:12,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (1/1) ... [2019-11-23 22:58:12,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:58:12,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:58:12,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:58:12,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:58:12,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (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 22:58:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:58:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 22:58:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:58:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:58:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:58:12,719 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:58:12,719 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-23 22:58:12,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:58:12 BoogieIcfgContainer [2019-11-23 22:58:12,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:58:12,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:58:12,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:58:12,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:58:12,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:58:11" (1/3) ... [2019-11-23 22:58:12,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb2281d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:58:12, skipping insertion in model container [2019-11-23 22:58:12,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:12" (2/3) ... [2019-11-23 22:58:12,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb2281d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:58:12, skipping insertion in model container [2019-11-23 22:58:12,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:58:12" (3/3) ... [2019-11-23 22:58:12,729 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m3.c [2019-11-23 22:58:12,739 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:58:12,746 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:58:12,757 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:58:12,781 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:58:12,782 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:58:12,782 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:58:12,782 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:58:12,782 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:58:12,782 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:58:12,782 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:58:12,782 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:58:12,796 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-23 22:58:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:58:12,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:58:12,803 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:58:12,804 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:58:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:58:12,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1275808413, now seen corresponding path program 1 times [2019-11-23 22:58:12,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:58:12,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027957053] [2019-11-23 22:58:12,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:58:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:13,002 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 22:58:13,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027957053] [2019-11-23 22:58:13,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:58:13,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:58:13,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73823226] [2019-11-23 22:58:13,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:58:13,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:58:13,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:58:13,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:58:13,030 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-23 22:58:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:58:13,103 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2019-11-23 22:58:13,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:58:13,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-23 22:58:13,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:58:13,115 INFO L225 Difference]: With dead ends: 29 [2019-11-23 22:58:13,115 INFO L226 Difference]: Without dead ends: 18 [2019-11-23 22:58:13,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:58:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-23 22:58:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-23 22:58:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:58:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 29 transitions. [2019-11-23 22:58:13,151 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 29 transitions. Word has length 11 [2019-11-23 22:58:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:58:13,152 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 29 transitions. [2019-11-23 22:58:13,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:58:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 29 transitions. [2019-11-23 22:58:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:58:13,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:58:13,153 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:58:13,153 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:58:13,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:58:13,154 INFO L82 PathProgramCache]: Analyzing trace with hash 895081300, now seen corresponding path program 1 times [2019-11-23 22:58:13,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:58:13,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587177469] [2019-11-23 22:58:13,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:58:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:58:13,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587177469] [2019-11-23 22:58:13,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:58:13,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:58:13,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054764337] [2019-11-23 22:58:13,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:58:13,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:58:13,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:58:13,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:58:13,212 INFO L87 Difference]: Start difference. First operand 18 states and 29 transitions. Second operand 3 states. [2019-11-23 22:58:13,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:58:13,252 INFO L93 Difference]: Finished difference Result 34 states and 56 transitions. [2019-11-23 22:58:13,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:58:13,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-23 22:58:13,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:58:13,253 INFO L225 Difference]: With dead ends: 34 [2019-11-23 22:58:13,253 INFO L226 Difference]: Without dead ends: 19 [2019-11-23 22:58:13,254 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:58:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-23 22:58:13,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-23 22:58:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:58:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2019-11-23 22:58:13,260 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 12 [2019-11-23 22:58:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:58:13,260 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-11-23 22:58:13,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:58:13,260 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 30 transitions. [2019-11-23 22:58:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:58:13,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:58:13,261 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:58:13,261 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:58:13,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:58:13,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1984926007, now seen corresponding path program 1 times [2019-11-23 22:58:13,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:58:13,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702079053] [2019-11-23 22:58:13,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:58:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:58:13,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702079053] [2019-11-23 22:58:13,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:58:13,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:58:13,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750693614] [2019-11-23 22:58:13,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:58:13,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:58:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:58:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:58:13,312 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 4 states. [2019-11-23 22:58:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:58:13,408 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2019-11-23 22:58:13,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:58:13,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-23 22:58:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:58:13,412 INFO L225 Difference]: With dead ends: 32 [2019-11-23 22:58:13,412 INFO L226 Difference]: Without dead ends: 19 [2019-11-23 22:58:13,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:58:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-23 22:58:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-23 22:58:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:58:13,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2019-11-23 22:58:13,424 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2019-11-23 22:58:13,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:58:13,425 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2019-11-23 22:58:13,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:58:13,426 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2019-11-23 22:58:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:58:13,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:58:13,427 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:58:13,427 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:58:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:58:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 336604779, now seen corresponding path program 1 times [2019-11-23 22:58:13,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:58:13,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612875084] [2019-11-23 22:58:13,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:58:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 22:58:13,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612875084] [2019-11-23 22:58:13,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312476917] [2019-11-23 22:58:13,515 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 22:58:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:13,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:58:13,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:58:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 22:58:13,653 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:58:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 22:58:13,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [8987992] [2019-11-23 22:58:13,700 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-23 22:58:13,701 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:58:13,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:58:13,713 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:58:13,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:58:15,507 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 129 [2019-11-23 22:58:15,648 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 129 [2019-11-23 22:58:15,820 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-11-23 22:58:15,953 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2019-11-23 22:58:47,492 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 260 [2019-11-23 22:58:52,646 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2019-11-23 22:58:52,853 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 272 [2019-11-23 22:58:54,838 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 277 [2019-11-23 22:58:56,787 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 278 [2019-11-23 22:58:56,922 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2019-11-23 22:59:00,624 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 287 [2019-11-23 22:59:04,674 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 293 [2019-11-23 22:59:06,602 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 298 [2019-11-23 22:59:06,722 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 296 [2019-11-23 22:59:08,946 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 299 [2019-11-23 22:59:09,366 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 302 [2019-11-23 22:59:18,672 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 323 [2019-11-23 22:59:18,810 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 318 [2019-11-23 22:59:21,047 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 324 [2019-11-23 22:59:21,165 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 320 [2019-11-23 22:59:21,390 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 323 [2019-11-23 22:59:21,635 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 326 [2019-11-23 22:59:21,864 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 329 [2019-11-23 22:59:21,989 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-11-23 22:59:22,108 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 332 [2019-11-23 22:59:22,240 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2019-11-23 22:59:22,352 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 336 [2019-11-23 22:59:25,012 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2019-11-23 22:59:25,224 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 341 [2019-11-23 22:59:27,664 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 349 [2019-11-23 22:59:27,801 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 345 [2019-11-23 22:59:30,427 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 350 [2019-11-23 22:59:30,825 WARN L192 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 349 [2019-11-23 22:59:33,972 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2019-11-23 22:59:34,107 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 353 [2019-11-23 22:59:36,456 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 357 [2019-11-23 22:59:36,605 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 354 [2019-11-23 22:59:36,743 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2019-11-23 22:59:36,869 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 356 [2019-11-23 22:59:39,731 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2019-11-23 22:59:39,862 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 360 [2019-11-23 22:59:42,460 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 364 [2019-11-23 22:59:42,605 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 362 [2019-11-23 22:59:42,752 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2019-11-23 22:59:42,890 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 365