/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/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 01:16:07,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 01:16:07,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 01:16:07,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 01:16:07,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 01:16:07,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 01:16:07,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 01:16:07,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 01:16:07,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 01:16:07,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 01:16:07,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 01:16:07,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 01:16:07,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 01:16:07,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 01:16:07,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 01:16:07,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 01:16:07,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 01:16:07,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 01:16:07,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 01:16:07,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 01:16:07,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 01:16:07,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 01:16:07,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 01:16:07,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 01:16:07,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 01:16:07,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 01:16:07,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 01:16:07,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 01:16:07,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 01:16:07,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 01:16:07,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 01:16:07,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 01:16:07,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 01:16:07,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 01:16:07,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 01:16:07,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 01:16:07,625 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 01:16:07,640 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 01:16:07,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 01:16:07,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 01:16:07,641 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 01:16:07,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 01:16:07,643 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 01:16:07,643 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 01:16:07,643 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 01:16:07,643 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 01:16:07,643 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 01:16:07,644 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 01:16:07,644 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 01:16:07,644 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 01:16:07,644 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 01:16:07,644 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 01:16:07,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 01:16:07,646 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 01:16:07,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 01:16:07,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 01:16:07,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 01:16:07,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 01:16:07,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 01:16:07,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 01:16:07,648 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 01:16:07,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 01:16:07,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 01:16:07,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 01:16:07,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 01:16:07,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 01:16:07,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 01:16:07,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 01:16:07,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 01:16:07,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 01:16:07,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 01:16:07,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 01:16:07,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 01:16:07,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 01:16:07,652 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 01:16:07,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 01:16:07,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 01:16:07,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 01:16:07,963 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 01:16:07,963 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 01:16:07,964 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-24 01:16:08,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28e974cde/7669becb0c9e4ffea9d8ee415aaed3db/FLAG5b1b2544d [2019-11-24 01:16:08,839 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 01:16:08,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-24 01:16:08,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28e974cde/7669becb0c9e4ffea9d8ee415aaed3db/FLAG5b1b2544d [2019-11-24 01:16:09,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28e974cde/7669becb0c9e4ffea9d8ee415aaed3db [2019-11-24 01:16:09,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 01:16:09,398 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 01:16:09,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 01:16:09,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 01:16:09,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 01:16:09,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:09" (1/1) ... [2019-11-24 01:16:09,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36627778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:09, skipping insertion in model container [2019-11-24 01:16:09,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:09" (1/1) ... [2019-11-24 01:16:09,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 01:16:09,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 01:16:10,995 WARN L612 FunctionHandler]: implicit declaration of function ldv_malloc [2019-11-24 01:16:11,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:16:11,105 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 01:16:11,368 WARN L612 FunctionHandler]: implicit declaration of function ldv_malloc [2019-11-24 01:16:11,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:16:11,517 INFO L208 MainTranslator]: Completed translation [2019-11-24 01:16:11,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11 WrapperNode [2019-11-24 01:16:11,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 01:16:11,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 01:16:11,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 01:16:11,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 01:16:11,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 01:16:11,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 01:16:11,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 01:16:11,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 01:16:11,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (1/1) ... [2019-11-24 01:16:11,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 01:16:11,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 01:16:11,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 01:16:11,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 01:16:11,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (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 01:16:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 01:16:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 01:16:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-24 01:16:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 01:16:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 01:16:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 01:16:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 01:16:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 01:16:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 01:16:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 01:16:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 01:16:11,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 01:16:12,501 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:19,436 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2019-11-24 01:16:19,437 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2019-11-24 01:16:49,791 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 01:16:49,792 INFO L284 CfgBuilder]: Removed 228 assume(true) statements. [2019-11-24 01:16:49,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:49 BoogieIcfgContainer [2019-11-24 01:16:49,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 01:16:49,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 01:16:49,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 01:16:49,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 01:16:49,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:16:09" (1/3) ... [2019-11-24 01:16:49,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8506c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:16:49, skipping insertion in model container [2019-11-24 01:16:49,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:11" (2/3) ... [2019-11-24 01:16:49,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8506c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:16:49, skipping insertion in model container [2019-11-24 01:16:49,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:49" (3/3) ... [2019-11-24 01:16:49,801 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2019-11-24 01:16:49,810 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 01:16:49,819 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 01:16:49,830 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 01:16:49,857 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 01:16:49,857 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 01:16:49,857 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 01:16:49,857 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 01:16:49,857 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 01:16:49,857 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 01:16:49,858 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 01:16:49,858 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 01:16:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2019-11-24 01:16:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 01:16:49,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:49,883 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 01:16:49,884 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:49,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:49,890 INFO L82 PathProgramCache]: Analyzing trace with hash 37767650, now seen corresponding path program 1 times [2019-11-24 01:16:49,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:49,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899169252] [2019-11-24 01:16:49,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:50,534 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 01:16:50,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899169252] [2019-11-24 01:16:50,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:50,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:16:50,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127380980] [2019-11-24 01:16:50,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:50,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:50,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:50,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:50,556 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2019-11-24 01:16:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:50,703 INFO L93 Difference]: Finished difference Result 280 states and 446 transitions. [2019-11-24 01:16:50,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:50,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-24 01:16:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:50,725 INFO L225 Difference]: With dead ends: 280 [2019-11-24 01:16:50,726 INFO L226 Difference]: Without dead ends: 171 [2019-11-24 01:16:50,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-24 01:16:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2019-11-24 01:16:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-11-24 01:16:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 238 transitions. [2019-11-24 01:16:50,817 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 238 transitions. Word has length 4 [2019-11-24 01:16:50,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:50,817 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 238 transitions. [2019-11-24 01:16:50,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 238 transitions. [2019-11-24 01:16:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 01:16:50,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:50,818 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 01:16:50,819 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:50,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:50,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1170796580, now seen corresponding path program 1 times [2019-11-24 01:16:50,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:50,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614330907] [2019-11-24 01:16:50,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:51,067 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 01:16:51,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614330907] [2019-11-24 01:16:51,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:51,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:16:51,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702739916] [2019-11-24 01:16:51,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:51,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:51,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:51,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:51,071 INFO L87 Difference]: Start difference. First operand 163 states and 238 transitions. Second operand 3 states. [2019-11-24 01:16:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:51,092 INFO L93 Difference]: Finished difference Result 163 states and 238 transitions. [2019-11-24 01:16:51,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:51,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-24 01:16:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:51,095 INFO L225 Difference]: With dead ends: 163 [2019-11-24 01:16:51,098 INFO L226 Difference]: Without dead ends: 158 [2019-11-24 01:16:51,099 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-11-24 01:16:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2019-11-24 01:16:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-11-24 01:16:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2019-11-24 01:16:51,124 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 5 [2019-11-24 01:16:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:51,124 INFO L462 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2019-11-24 01:16:51,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2019-11-24 01:16:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 01:16:51,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:51,126 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:51,127 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:51,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:51,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2097938021, now seen corresponding path program 1 times [2019-11-24 01:16:51,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:51,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261761707] [2019-11-24 01:16:51,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:51,357 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 01:16:51,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261761707] [2019-11-24 01:16:51,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:51,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:16:51,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604457070] [2019-11-24 01:16:51,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:51,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:51,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:51,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:51,360 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand 3 states. [2019-11-24 01:16:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:51,445 INFO L93 Difference]: Finished difference Result 392 states and 575 transitions. [2019-11-24 01:16:51,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:51,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 01:16:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:51,450 INFO L225 Difference]: With dead ends: 392 [2019-11-24 01:16:51,450 INFO L226 Difference]: Without dead ends: 236 [2019-11-24 01:16:51,452 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 01:16:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-11-24 01:16:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 172. [2019-11-24 01:16:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-24 01:16:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 244 transitions. [2019-11-24 01:16:51,478 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 244 transitions. Word has length 15 [2019-11-24 01:16:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:51,479 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 244 transitions. [2019-11-24 01:16:51,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 244 transitions. [2019-11-24 01:16:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 01:16:51,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:51,482 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:51,482 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:51,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1917149605, now seen corresponding path program 1 times [2019-11-24 01:16:51,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:51,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249525494] [2019-11-24 01:16:51,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:51,713 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 01:16:51,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249525494] [2019-11-24 01:16:51,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:51,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:16:51,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406512367] [2019-11-24 01:16:51,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:51,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:51,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:51,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:51,718 INFO L87 Difference]: Start difference. First operand 172 states and 244 transitions. Second operand 3 states. [2019-11-24 01:16:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:54,495 INFO L93 Difference]: Finished difference Result 362 states and 521 transitions. [2019-11-24 01:16:54,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:54,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-24 01:16:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:54,497 INFO L225 Difference]: With dead ends: 362 [2019-11-24 01:16:54,497 INFO L226 Difference]: Without dead ends: 191 [2019-11-24 01:16:54,498 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 01:16:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-11-24 01:16:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2019-11-24 01:16:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2019-11-24 01:16:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 272 transitions. [2019-11-24 01:16:54,511 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 272 transitions. Word has length 18 [2019-11-24 01:16:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:54,511 INFO L462 AbstractCegarLoop]: Abstraction has 191 states and 272 transitions. [2019-11-24 01:16:54,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 272 transitions. [2019-11-24 01:16:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 01:16:54,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:54,513 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:54,514 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:54,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:54,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1763400921, now seen corresponding path program 1 times [2019-11-24 01:16:54,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:54,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657065498] [2019-11-24 01:16:54,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:54,797 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 01:16:54,797 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657065498] [2019-11-24 01:16:54,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:54,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:16:54,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62735808] [2019-11-24 01:16:54,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:54,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:54,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:54,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:54,799 INFO L87 Difference]: Start difference. First operand 191 states and 272 transitions. Second operand 3 states. [2019-11-24 01:16:54,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:54,855 INFO L93 Difference]: Finished difference Result 477 states and 685 transitions. [2019-11-24 01:16:54,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:54,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 01:16:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:54,858 INFO L225 Difference]: With dead ends: 477 [2019-11-24 01:16:54,858 INFO L226 Difference]: Without dead ends: 288 [2019-11-24 01:16:54,859 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 01:16:54,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2019-11-24 01:16:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 203. [2019-11-24 01:16:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2019-11-24 01:16:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 284 transitions. [2019-11-24 01:16:54,871 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 284 transitions. Word has length 19 [2019-11-24 01:16:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:54,872 INFO L462 AbstractCegarLoop]: Abstraction has 203 states and 284 transitions. [2019-11-24 01:16:54,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 284 transitions. [2019-11-24 01:16:54,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-24 01:16:54,874 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:54,874 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:54,874 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:54,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1651969471, now seen corresponding path program 1 times [2019-11-24 01:16:54,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:54,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125160454] [2019-11-24 01:16:54,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:55,106 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 01:16:55,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125160454] [2019-11-24 01:16:55,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:55,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:16:55,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109371910] [2019-11-24 01:16:55,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:55,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:55,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:55,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:55,109 INFO L87 Difference]: Start difference. First operand 203 states and 284 transitions. Second operand 3 states. [2019-11-24 01:16:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:55,146 INFO L93 Difference]: Finished difference Result 519 states and 723 transitions. [2019-11-24 01:16:55,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:55,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-24 01:16:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:55,149 INFO L225 Difference]: With dead ends: 519 [2019-11-24 01:16:55,149 INFO L226 Difference]: Without dead ends: 318 [2019-11-24 01:16:55,150 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 01:16:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2019-11-24 01:16:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 221. [2019-11-24 01:16:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-11-24 01:16:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 304 transitions. [2019-11-24 01:16:55,163 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 304 transitions. Word has length 21 [2019-11-24 01:16:55,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:55,163 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 304 transitions. [2019-11-24 01:16:55,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:55,164 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 304 transitions. [2019-11-24 01:16:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-24 01:16:55,165 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:55,165 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:55,165 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:55,166 INFO L82 PathProgramCache]: Analyzing trace with hash 669832885, now seen corresponding path program 1 times [2019-11-24 01:16:55,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:55,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108200141] [2019-11-24 01:16:55,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 01:16:55,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108200141] [2019-11-24 01:16:55,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:55,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:16:55,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105738511] [2019-11-24 01:16:55,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:55,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:55,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:55,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:55,379 INFO L87 Difference]: Start difference. First operand 221 states and 304 transitions. Second operand 3 states. [2019-11-24 01:16:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:55,437 INFO L93 Difference]: Finished difference Result 537 states and 747 transitions. [2019-11-24 01:16:55,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:55,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-11-24 01:16:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:55,440 INFO L225 Difference]: With dead ends: 537 [2019-11-24 01:16:55,440 INFO L226 Difference]: Without dead ends: 318 [2019-11-24 01:16:55,441 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 01:16:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2019-11-24 01:16:55,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 231. [2019-11-24 01:16:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-11-24 01:16:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 314 transitions. [2019-11-24 01:16:55,455 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 314 transitions. Word has length 29 [2019-11-24 01:16:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:55,456 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 314 transitions. [2019-11-24 01:16:55,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 314 transitions. [2019-11-24 01:16:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 01:16:55,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:55,461 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:55,461 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:55,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:55,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1344070390, now seen corresponding path program 1 times [2019-11-24 01:16:55,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:55,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395110166] [2019-11-24 01:16:55,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:55,547 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 01:16:55,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990131647] [2019-11-24 01:16:55,548 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 01:16:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:56,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 01:16:56,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:16:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 01:16:56,624 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:16:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 01:16:56,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395110166] [2019-11-24 01:16:56,641 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 01:16:56,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990131647] [2019-11-24 01:16:56,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:56,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-24 01:16:56,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656993542] [2019-11-24 01:16:56,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 01:16:56,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:56,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 01:16:56,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 01:16:56,648 INFO L87 Difference]: Start difference. First operand 231 states and 314 transitions. Second operand 4 states. [2019-11-24 01:16:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:56,747 INFO L93 Difference]: Finished difference Result 586 states and 807 transitions. [2019-11-24 01:16:56,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 01:16:56,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-24 01:16:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:56,750 INFO L225 Difference]: With dead ends: 586 [2019-11-24 01:16:56,750 INFO L226 Difference]: Without dead ends: 357 [2019-11-24 01:16:56,751 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 01:16:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2019-11-24 01:16:56,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 225. [2019-11-24 01:16:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-11-24 01:16:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 303 transitions. [2019-11-24 01:16:56,766 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 303 transitions. Word has length 30 [2019-11-24 01:16:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:56,766 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 303 transitions. [2019-11-24 01:16:56,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 01:16:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 303 transitions. [2019-11-24 01:16:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-24 01:16:56,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:56,768 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:56,982 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:16:56,983 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:56,984 INFO L82 PathProgramCache]: Analyzing trace with hash 559388609, now seen corresponding path program 1 times [2019-11-24 01:16:56,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:56,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269591561] [2019-11-24 01:16:56,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:57,102 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 01:16:57,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996207381] [2019-11-24 01:16:57,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:16:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:58,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 01:16:58,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:16:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 01:16:58,155 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:16:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 01:16:58,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269591561] [2019-11-24 01:16:58,161 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 01:16:58,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996207381] [2019-11-24 01:16:58,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:58,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-24 01:16:58,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906783599] [2019-11-24 01:16:58,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:58,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:58,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:58,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:58,163 INFO L87 Difference]: Start difference. First operand 225 states and 303 transitions. Second operand 3 states. [2019-11-24 01:16:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:58,241 INFO L93 Difference]: Finished difference Result 426 states and 578 transitions. [2019-11-24 01:16:58,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:58,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-11-24 01:16:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:58,246 INFO L225 Difference]: With dead ends: 426 [2019-11-24 01:16:58,246 INFO L226 Difference]: Without dead ends: 294 [2019-11-24 01:16:58,247 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 1 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 01:16:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-11-24 01:16:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 227. [2019-11-24 01:16:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-11-24 01:16:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 305 transitions. [2019-11-24 01:16:58,262 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 305 transitions. Word has length 32 [2019-11-24 01:16:58,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:58,262 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 305 transitions. [2019-11-24 01:16:58,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 305 transitions. [2019-11-24 01:16:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-24 01:16:58,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:58,265 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:58,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:16:58,480 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash 414517956, now seen corresponding path program 1 times [2019-11-24 01:16:58,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:58,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163038829] [2019-11-24 01:16:58,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:58,559 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 01:16:58,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695553985] [2019-11-24 01:16:58,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:16:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:59,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-24 01:16:59,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:16:59,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:16:59,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:16:59,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:16:59,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:16:59,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:16:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 01:16:59,996 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:16:59,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:17:00,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:17:00,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:17:00,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:17:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 01:17:00,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163038829] [2019-11-24 01:17:00,049 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 01:17:00,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695553985] [2019-11-24 01:17:00,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:17:00,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-11-24 01:17:00,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007233986] [2019-11-24 01:17:00,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 01:17:00,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:17:00,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 01:17:00,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-24 01:17:00,051 INFO L87 Difference]: Start difference. First operand 227 states and 305 transitions. Second operand 6 states. [2019-11-24 01:17:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:17:02,563 INFO L93 Difference]: Finished difference Result 393 states and 533 transitions. [2019-11-24 01:17:02,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 01:17:02,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-24 01:17:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:17:02,566 INFO L225 Difference]: With dead ends: 393 [2019-11-24 01:17:02,566 INFO L226 Difference]: Without dead ends: 385 [2019-11-24 01:17:02,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-24 01:17:02,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2019-11-24 01:17:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 326. [2019-11-24 01:17:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2019-11-24 01:17:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 443 transitions. [2019-11-24 01:17:02,586 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 443 transitions. Word has length 33 [2019-11-24 01:17:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:17:02,587 INFO L462 AbstractCegarLoop]: Abstraction has 326 states and 443 transitions. [2019-11-24 01:17:02,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 01:17:02,587 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 443 transitions. [2019-11-24 01:17:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-24 01:17:02,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:17:02,588 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:17:02,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:17:02,795 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:17:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:17:02,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1180438348, now seen corresponding path program 1 times [2019-11-24 01:17:02,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:17:02,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820001447] [2019-11-24 01:17:02,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:17:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:17:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:17:03,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820001447] [2019-11-24 01:17:03,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109716542] [2019-11-24 01:17:03,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:17:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:17:04,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 2289 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 01:17:04,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:17:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:17:04,340 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:17:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:17:04,363 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2112115308] [2019-11-24 01:17:04,409 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-11-24 01:17:04,409 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 01:17:04,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 01:17:04,433 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 01:17:04,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 01:17:18,529 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ~__mod_description186~0 11) 61) [2019-11-24 01:17:20,599 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ~__mod_description186~0 11) 61) [2019-11-24 01:17:22,639 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ~__mod_description186~0 11) 68) [2019-11-24 01:17:24,692 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ~__mod_description186~0 11) 68) [2019-11-24 01:17:26,770 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ~__mod_description186~0 11) 114) [2019-11-24 01:17:28,819 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ~__mod_description186~0 11) 114) [2019-11-24 01:17:30,858 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ~__mod_description186~0 11) 105) [2019-11-24 01:17:32,889 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ~__mod_description186~0 11) 105) [2019-11-24 01:17:34,935 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ~__mod_description186~0 11) 118) [2019-11-24 01:17:36,998 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ~__mod_description186~0 11) 118) [2019-11-24 01:17:39,019 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ~__mod_description186~0 11) 101) [2019-11-24 01:17:41,055 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ~__mod_description186~0 11) 101) [2019-11-24 01:17:43,123 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select ~__mod_description186~0 11) 32) [2019-11-24 01:17:45,173 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select ~__mod_description186~0 11) 32)