/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/product-lines/email_spec3_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:01:35,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:01:35,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:01:35,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:01:35,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:01:35,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:01:35,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:01:35,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:01:35,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:01:35,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:01:35,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:01:35,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:01:35,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:01:35,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:01:35,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:01:36,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:01:36,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:01:36,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:01:36,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:01:36,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:01:36,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:01:36,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:01:36,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:01:36,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:01:36,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:01:36,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:01:36,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:01:36,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:01:36,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:01:36,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:01:36,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:01:36,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:01:36,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:01:36,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:01:36,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:01:36,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:01:36,040 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 05:01:36,065 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:01:36,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:01:36,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:01:36,067 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:01:36,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:01:36,067 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:01:36,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:01:36,067 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:01:36,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:01:36,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:01:36,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:01:36,069 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:01:36,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:01:36,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:01:36,070 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:01:36,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:01:36,072 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:01:36,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:01:36,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:01:36,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:01:36,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:01:36,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:01:36,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:01:36,073 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:01:36,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:01:36,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:01:36,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:01:36,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:01:36,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:01:36,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:01:36,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:01:36,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:01:36,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:01:36,076 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:01:36,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:01:36,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:01:36,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:01:36,077 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:01:36,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:01:36,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:01:36,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:01:36,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:01:36,357 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:01:36,358 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product34.cil.c [2019-11-24 05:01:36,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67efd9f93/7a634d084baf441f92b3016578748706/FLAG51dac841f [2019-11-24 05:01:37,003 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:01:37,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product34.cil.c [2019-11-24 05:01:37,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67efd9f93/7a634d084baf441f92b3016578748706/FLAG51dac841f [2019-11-24 05:01:37,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67efd9f93/7a634d084baf441f92b3016578748706 [2019-11-24 05:01:37,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:01:37,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:01:37,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:01:37,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:01:37,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:01:37,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:01:37" (1/1) ... [2019-11-24 05:01:37,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af77753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:37, skipping insertion in model container [2019-11-24 05:01:37,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:01:37" (1/1) ... [2019-11-24 05:01:37,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:01:37,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:01:38,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:01:38,158 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:01:38,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:01:38,374 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:01:38,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38 WrapperNode [2019-11-24 05:01:38,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:01:38,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:01:38,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:01:38,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:01:38,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:01:38,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:01:38,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:01:38,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:01:38,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (1/1) ... [2019-11-24 05:01:38,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:01:38,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:01:38,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:01:38,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:01:38,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (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 05:01:38,928 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:01:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:01:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:01:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:01:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:02:01,451 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:02:01,452 INFO L284 CfgBuilder]: Removed 909 assume(true) statements. [2019-11-24 05:02:01,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:02:01 BoogieIcfgContainer [2019-11-24 05:02:01,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:02:01,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:02:01,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:02:01,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:02:01,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:01:37" (1/3) ... [2019-11-24 05:02:01,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6be106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:02:01, skipping insertion in model container [2019-11-24 05:02:01,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:38" (2/3) ... [2019-11-24 05:02:01,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6be106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:02:01, skipping insertion in model container [2019-11-24 05:02:01,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:02:01" (3/3) ... [2019-11-24 05:02:01,466 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product34.cil.c [2019-11-24 05:02:01,475 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:02:01,481 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-11-24 05:02:01,489 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-11-24 05:02:01,511 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:02:01,511 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:02:01,511 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:02:01,511 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:02:01,511 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:02:01,511 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:02:01,511 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:02:01,512 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:02:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2019-11-24 05:02:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:02:01,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:02:01,537 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:02:01,538 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:02:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:02:01,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1264937065, now seen corresponding path program 1 times [2019-11-24 05:02:01,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:02:01,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900236169] [2019-11-24 05:02:01,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:02:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:02:01,935 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 05:02:01,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900236169] [2019-11-24 05:02:01,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:02:01,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:02:01,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856410801] [2019-11-24 05:02:01,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:02:01,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:02:01,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:02:01,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:02:01,963 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2019-11-24 05:02:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:02:02,000 INFO L93 Difference]: Finished difference Result 136 states and 201 transitions. [2019-11-24 05:02:02,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:02:02,002 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:02:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:02:02,021 INFO L225 Difference]: With dead ends: 136 [2019-11-24 05:02:02,021 INFO L226 Difference]: Without dead ends: 77 [2019-11-24 05:02:02,028 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:02:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-24 05:02:02,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-11-24 05:02:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-24 05:02:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 104 transitions. [2019-11-24 05:02:02,099 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 104 transitions. Word has length 8 [2019-11-24 05:02:02,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:02:02,100 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 104 transitions. [2019-11-24 05:02:02,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:02:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 104 transitions. [2019-11-24 05:02:02,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:02:02,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:02:02,102 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:02:02,103 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:02:02,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:02:02,103 INFO L82 PathProgramCache]: Analyzing trace with hash 356022098, now seen corresponding path program 1 times [2019-11-24 05:02:02,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:02:02,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215355208] [2019-11-24 05:02:02,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:02:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:02:02,326 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 05:02:02,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215355208] [2019-11-24 05:02:02,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:02:02,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:02:02,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085397353] [2019-11-24 05:02:02,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:02:02,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:02:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:02:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:02:02,332 INFO L87 Difference]: Start difference. First operand 77 states and 104 transitions. Second operand 3 states. [2019-11-24 05:02:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:02:02,362 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2019-11-24 05:02:02,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:02:02,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:02:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:02:02,364 INFO L225 Difference]: With dead ends: 130 [2019-11-24 05:02:02,364 INFO L226 Difference]: Without dead ends: 79 [2019-11-24 05:02:02,367 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 [2019-11-24 05:02:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-24 05:02:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-11-24 05:02:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-24 05:02:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 106 transitions. [2019-11-24 05:02:02,384 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 106 transitions. Word has length 9 [2019-11-24 05:02:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:02:02,384 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 106 transitions. [2019-11-24 05:02:02,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:02:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 106 transitions. [2019-11-24 05:02:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:02:02,385 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:02:02,386 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:02:02,387 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:02:02,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:02:02,387 INFO L82 PathProgramCache]: Analyzing trace with hash -777158959, now seen corresponding path program 1 times [2019-11-24 05:02:02,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:02:02,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817226561] [2019-11-24 05:02:02,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:02:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:02:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:02:02,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817226561] [2019-11-24 05:02:02,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838881138] [2019-11-24 05:02:02,726 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 05:02:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:02:03,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:02:03,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:02:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:02:03,282 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:02:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:02:03,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1061599707] [2019-11-24 05:02:03,333 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 05:02:03,333 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:02:03,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:02:03,346 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:02:03,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs