/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_spec7_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:09:44,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:09:44,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:09:44,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:09:44,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:09:44,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:09:44,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:09:44,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:09:44,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:09:44,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:09:44,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:09:44,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:09:44,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:09:44,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:09:44,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:09:44,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:09:44,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:09:44,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:09:44,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:09:44,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:09:44,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:09:44,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:09:44,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:09:44,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:09:44,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 05:09:44,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 05:09:44,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 05:09:44,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 05:09:44,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 05:09:44,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 05:09:44,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:09:44,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:09:44,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:09:44,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:09:44,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:09:44,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:09:44,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:09:44,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:09:44,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:09:44,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:09:44,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:09:44,598 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 05:09:44,624 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:09:44,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:09:44,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:09:44,626 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:09:44,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:09:44,626 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:09:44,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:09:44,627 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:09:44,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:09:44,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:09:44,628 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:09:44,628 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:09:44,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:09:44,629 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:09:44,629 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:09:44,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:09:44,631 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:09:44,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:09:44,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:09:44,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:09:44,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:09:44,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:09:44,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:09:44,635 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:09:44,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:09:44,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:09:44,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:09:44,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:09:44,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:09:44,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:09:44,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:09:44,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:09:44,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:09:44,640 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:09:44,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:09:44,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:09:44,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:09:44,641 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:09:44,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:09:44,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:09:44,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:09:44,928 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:09:44,929 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:09:44,929 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c [2019-11-24 05:09:45,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410da6f24/aa15912274f245a58c0f102308acbbff/FLAG33c1dccba [2019-11-24 05:09:45,614 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:09:45,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product31.cil.c [2019-11-24 05:09:45,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410da6f24/aa15912274f245a58c0f102308acbbff/FLAG33c1dccba [2019-11-24 05:09:45,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410da6f24/aa15912274f245a58c0f102308acbbff [2019-11-24 05:09:45,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:09:45,842 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:09:45,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:45,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:09:45,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:09:45,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:45" (1/1) ... [2019-11-24 05:09:45,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3824762d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:45, skipping insertion in model container [2019-11-24 05:09:45,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:45" (1/1) ... [2019-11-24 05:09:45,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:09:45,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:09:46,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:09:46,754 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:09:46,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:09:47,017 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:09:47,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47 WrapperNode [2019-11-24 05:09:47,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:47,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:09:47,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:09:47,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:09:47,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:09:47,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:09:47,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:09:47,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:09:47,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:09:47,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:09:47,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:09:47,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:09:47,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (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 05:09:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:09:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:09:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:09:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:09:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:09:56,592 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:09:56,593 INFO L284 CfgBuilder]: Removed 379 assume(true) statements. [2019-11-24 05:09:56,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:09:56 BoogieIcfgContainer [2019-11-24 05:09:56,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:09:56,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:09:56,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:09:56,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:09:56,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:09:45" (1/3) ... [2019-11-24 05:09:56,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac94315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:09:56, skipping insertion in model container [2019-11-24 05:09:56,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47" (2/3) ... [2019-11-24 05:09:56,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac94315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:09:56, skipping insertion in model container [2019-11-24 05:09:56,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:09:56" (3/3) ... [2019-11-24 05:09:56,605 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.c [2019-11-24 05:09:56,619 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:09:56,629 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 05:09:56,648 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 05:09:56,683 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:09:56,683 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:09:56,683 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:09:56,683 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:09:56,684 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:09:56,684 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:09:56,684 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:09:56,684 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:09:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-24 05:09:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 05:09:56,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:09:56,716 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 05:09:56,717 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:09:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:09:56,726 INFO L82 PathProgramCache]: Analyzing trace with hash -774635891, now seen corresponding path program 1 times [2019-11-24 05:09:56,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:09:56,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830599969] [2019-11-24 05:09:56,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:09:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:09:57,350 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 05:09:57,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830599969] [2019-11-24 05:09:57,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:09:57,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:09:57,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467376614] [2019-11-24 05:09:57,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:09:57,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:09:57,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:09:57,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:09:57,390 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-24 05:09:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:09:57,427 INFO L93 Difference]: Finished difference Result 50 states and 79 transitions. [2019-11-24 05:09:57,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:09:57,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-24 05:09:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:09:57,449 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:09:57,449 INFO L226 Difference]: Without dead ends: 35 [2019-11-24 05:09:57,455 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 05:09:57,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-24 05:09:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-24 05:09:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-24 05:09:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 57 transitions. [2019-11-24 05:09:57,519 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 57 transitions. Word has length 6 [2019-11-24 05:09:57,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:09:57,520 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 57 transitions. [2019-11-24 05:09:57,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:09:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 57 transitions. [2019-11-24 05:09:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:09:57,521 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:09:57,521 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:09:57,521 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:09:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:09:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash -797335328, now seen corresponding path program 1 times [2019-11-24 05:09:57,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:09:57,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354889442] [2019-11-24 05:09:57,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:09:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:09:57,713 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 05:09:57,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354889442] [2019-11-24 05:09:57,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:09:57,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:09:57,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575071481] [2019-11-24 05:09:57,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:09:57,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:09:57,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:09:57,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:09:57,718 INFO L87 Difference]: Start difference. First operand 35 states and 57 transitions. Second operand 3 states. [2019-11-24 05:09:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:09:57,738 INFO L93 Difference]: Finished difference Result 46 states and 68 transitions. [2019-11-24 05:09:57,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:09:57,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-24 05:09:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:09:57,741 INFO L225 Difference]: With dead ends: 46 [2019-11-24 05:09:57,741 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 05:09:57,742 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 05:09:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 05:09:57,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-24 05:09:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 05:09:57,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2019-11-24 05:09:57,756 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 7 [2019-11-24 05:09:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:09:57,757 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2019-11-24 05:09:57,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:09:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2019-11-24 05:09:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:09:57,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:09:57,759 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:09:57,760 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:09:57,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:09:57,762 INFO L82 PathProgramCache]: Analyzing trace with hash -189925644, now seen corresponding path program 1 times [2019-11-24 05:09:57,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:09:57,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936224597] [2019-11-24 05:09:57,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:09:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:09:58,318 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 05:09:58,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936224597] [2019-11-24 05:09:58,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273484267] [2019-11-24 05:09:58,319 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 05:09:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:09:58,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:09:58,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:09:58,906 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 05:09:58,909 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:09:58,929 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 05:09:58,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [39054274] [2019-11-24 05:09:58,981 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-24 05:09:58,982 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:09:58,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:09:59,000 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:09:59,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:10:36,660 WARN L192 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 675 [2019-11-24 05:10:40,548 WARN L192 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 304 DAG size of output: 247 [2019-11-24 05:10:40,949 WARN L192 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 716 [2019-11-24 05:10:41,362 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8