/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/eca-rers2012/Problem11_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:54:06,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:54:06,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:54:06,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:54:06,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:54:06,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:54:06,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:54:06,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:54:06,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:54:06,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:54:06,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:54:06,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:54:06,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:54:06,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:54:06,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:54:06,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:54:06,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:54:06,574 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 23:54:06,606 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:54:06,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:54:06,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:54:06,607 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:54:06,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:54:06,608 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:54:06,608 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:54:06,608 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:54:06,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:54:06,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:54:06,609 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:54:06,609 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:54:06,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:54:06,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:54:06,609 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:54:06,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:54:06,611 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:54:06,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:54:06,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:54:06,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:54:06,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:54:06,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:54:06,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:54:06,613 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:54:06,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:54:06,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:54:06,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:54:06,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:54:06,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:54:06,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:54:06,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:54:06,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:54:06,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:54:06,619 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:54:06,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:54:06,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:54:06,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:54:06,620 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:54:06,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:54:06,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:54:06,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:54:06,925 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:54:06,925 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:54:06,926 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label07.c [2019-11-23 23:54:06,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af69d8d70/1fbc5d73686b4b2397af6d3b0f2b2447/FLAGd6568eb5f [2019-11-23 23:54:07,591 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:54:07,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label07.c [2019-11-23 23:54:07,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af69d8d70/1fbc5d73686b4b2397af6d3b0f2b2447/FLAGd6568eb5f [2019-11-23 23:54:07,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af69d8d70/1fbc5d73686b4b2397af6d3b0f2b2447 [2019-11-23 23:54:07,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:54:07,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:54:07,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:54:07,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:54:07,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:54:07,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:54:07" (1/1) ... [2019-11-23 23:54:07,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ee21c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:07, skipping insertion in model container [2019-11-23 23:54:07,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:54:07" (1/1) ... [2019-11-23 23:54:07,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:54:07,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:54:08,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:54:08,592 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:54:08,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:54:08,832 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:54:08,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08 WrapperNode [2019-11-23 23:54:08,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:54:08,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:54:08,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:54:08,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:54:08,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:08,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:08,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:54:08,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:54:08,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:54:08,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:54:08,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:08,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:08,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:08,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:09,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:09,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:09,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (1/1) ... [2019-11-23 23:54:09,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:54:09,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:54:09,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:54:09,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:54:09,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (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 23:54:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:54:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:55:53,013 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:55:53,013 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 23:55:53,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:55:53 BoogieIcfgContainer [2019-11-23 23:55:53,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:55:53,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:55:53,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:55:53,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:55:53,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:54:07" (1/3) ... [2019-11-23 23:55:53,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d4249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:55:53, skipping insertion in model container [2019-11-23 23:55:53,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:08" (2/3) ... [2019-11-23 23:55:53,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d4249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:55:53, skipping insertion in model container [2019-11-23 23:55:53,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:55:53" (3/3) ... [2019-11-23 23:55:53,024 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label07.c [2019-11-23 23:55:53,034 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:55:53,042 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:55:53,054 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:55:53,079 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:55:53,079 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:55:53,079 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:55:53,080 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:55:53,080 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:55:53,080 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:55:53,080 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:55:53,080 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:55:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:55:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 23:55:53,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:55:53,097 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 23:55:53,097 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:55:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:55:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1169209456, now seen corresponding path program 1 times [2019-11-23 23:55:53,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:55:53,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605605239] [2019-11-23 23:55:53,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:55:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:55:53,281 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 23:55:53,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605605239] [2019-11-23 23:55:53,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:55:53,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:55:53,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563630093] [2019-11-23 23:55:53,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:55:53,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:55:53,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:55:53,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:55:53,307 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states.