/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-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:00:36,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:00:36,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:00:36,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:00:36,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:00:36,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:00:36,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:00:36,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:00:36,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:00:36,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:00:36,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:00:36,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:00:36,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:00:36,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:00:36,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:00:36,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:00:36,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:00:36,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:00:36,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:00:36,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:00:36,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:00:36,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:00:36,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:00:36,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:00:36,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:00:36,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:00:36,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:00:36,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:00:36,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:00:36,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:00:36,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:00:36,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:00:36,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:00:36,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:00:36,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:00:36,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:00:36,857 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 04:00:36,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:00:36,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:00:36,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:00:36,874 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:00:36,875 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:00:36,875 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:00:36,875 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:00:36,875 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:00:36,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:00:36,876 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:00:36,876 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:00:36,876 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:00:36,876 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:00:36,876 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:00:36,877 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:00:36,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:00:36,878 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:00:36,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:00:36,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:00:36,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:00:36,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:00:36,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:00:36,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:00:36,879 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:00:36,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:00:36,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:00:36,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:00:36,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:00:36,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:00:36,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:00:36,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:00:36,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:00:36,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:00:36,881 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:00:36,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:00:36,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:00:36,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:00:36,882 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:00:37,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:00:37,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:00:37,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:00:37,188 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:00:37,188 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:00:37,189 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-24 04:00:37,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653512079/6b4bfc09f01f40fd8c95a4000960d727/FLAGe095c2f17 [2019-11-24 04:00:38,011 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:00:38,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-24 04:00:38,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653512079/6b4bfc09f01f40fd8c95a4000960d727/FLAGe095c2f17 [2019-11-24 04:00:38,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653512079/6b4bfc09f01f40fd8c95a4000960d727 [2019-11-24 04:00:38,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:00:38,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:00:38,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:00:38,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:00:38,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:00:38,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:00:38" (1/1) ... [2019-11-24 04:00:38,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d548b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:38, skipping insertion in model container [2019-11-24 04:00:38,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:00:38" (1/1) ... [2019-11-24 04:00:38,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:00:38,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:00:39,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:00:39,569 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:00:39,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:00:40,014 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:00:40,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40 WrapperNode [2019-11-24 04:00:40,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:00:40,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:00:40,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:00:40,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:00:40,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:00:40,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:00:40,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:00:40,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:00:40,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (1/1) ... [2019-11-24 04:00:40,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:00:40,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:00:40,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:00:40,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:00:40,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (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 04:00:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 04:00:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 04:00:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 04:00:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:00:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:00:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:00:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:00:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:00:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:00:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:00:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 04:00:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:00:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 04:00:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:00:40,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:01:36,519 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:01:36,520 INFO L284 CfgBuilder]: Removed 665 assume(true) statements. [2019-11-24 04:01:36,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:01:36 BoogieIcfgContainer [2019-11-24 04:01:36,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:01:36,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:01:36,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:01:36,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:01:36,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:00:38" (1/3) ... [2019-11-24 04:01:36,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fac639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:01:36, skipping insertion in model container [2019-11-24 04:01:36,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:00:40" (2/3) ... [2019-11-24 04:01:36,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fac639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:01:36, skipping insertion in model container [2019-11-24 04:01:36,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:01:36" (3/3) ... [2019-11-24 04:01:36,530 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-24 04:01:36,540 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:01:36,549 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-24 04:01:36,561 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-24 04:01:36,589 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:01:36,589 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:01:36,589 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:01:36,590 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:01:36,590 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:01:36,590 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:01:36,590 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:01:36,590 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:01:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2019-11-24 04:01:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-24 04:01:36,620 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:01:36,621 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 04:01:36,622 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:01:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:01:36,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1790479105, now seen corresponding path program 1 times [2019-11-24 04:01:36,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:01:36,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55094050] [2019-11-24 04:01:36,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:01:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:01:37,314 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 04:01:37,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55094050] [2019-11-24 04:01:37,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:01:37,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:01:37,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885234418] [2019-11-24 04:01:37,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:01:37,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:01:37,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:01:37,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:01:37,341 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 3 states. [2019-11-24 04:01:39,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:01:39,870 INFO L93 Difference]: Finished difference Result 311 states and 497 transitions. [2019-11-24 04:01:39,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:01:39,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-24 04:01:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:01:39,899 INFO L225 Difference]: With dead ends: 311 [2019-11-24 04:01:39,899 INFO L226 Difference]: Without dead ends: 163 [2019-11-24 04:01:39,905 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 04:01:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-11-24 04:01:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2019-11-24 04:01:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-11-24 04:01:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2019-11-24 04:01:39,961 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 21 [2019-11-24 04:01:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:01:39,962 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2019-11-24 04:01:39,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:01:39,962 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2019-11-24 04:01:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-24 04:01:39,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:01:39,964 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, 1, 1, 1] [2019-11-24 04:01:39,965 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:01:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:01:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash 288073562, now seen corresponding path program 1 times [2019-11-24 04:01:39,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:01:39,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455374778] [2019-11-24 04:01:39,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:01:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:01:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:01:40,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455374778] [2019-11-24 04:01:40,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:01:40,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:01:40,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666629933] [2019-11-24 04:01:40,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:01:40,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:01:40,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:01:40,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:01:40,244 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand 3 states. [2019-11-24 04:01:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:01:45,005 INFO L93 Difference]: Finished difference Result 363 states and 563 transitions. [2019-11-24 04:01:45,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:01:45,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-24 04:01:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:01:45,008 INFO L225 Difference]: With dead ends: 363 [2019-11-24 04:01:45,008 INFO L226 Difference]: Without dead ends: 210 [2019-11-24 04:01:45,013 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 04:01:45,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-11-24 04:01:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2019-11-24 04:01:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-11-24 04:01:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 323 transitions. [2019-11-24 04:01:45,046 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 323 transitions. Word has length 36 [2019-11-24 04:01:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:01:45,048 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 323 transitions. [2019-11-24 04:01:45,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:01:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 323 transitions. [2019-11-24 04:01:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-24 04:01:45,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:01:45,051 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:01:45,052 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:01:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:01:45,052 INFO L82 PathProgramCache]: Analyzing trace with hash 790562311, now seen corresponding path program 1 times [2019-11-24 04:01:45,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:01:45,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383692272] [2019-11-24 04:01:45,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:01:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:01:45,444 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 04:01:45,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383692272] [2019-11-24 04:01:45,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:01:45,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:01:45,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543770049] [2019-11-24 04:01:45,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:01:45,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:01:45,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:01:45,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:01:45,447 INFO L87 Difference]: Start difference. First operand 210 states and 323 transitions. Second operand 3 states. [2019-11-24 04:01:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:01:47,750 INFO L93 Difference]: Finished difference Result 396 states and 613 transitions. [2019-11-24 04:01:47,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:01:47,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-11-24 04:01:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:01:47,757 INFO L225 Difference]: With dead ends: 396 [2019-11-24 04:01:47,757 INFO L226 Difference]: Without dead ends: 380 [2019-11-24 04:01:47,758 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 04:01:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2019-11-24 04:01:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2019-11-24 04:01:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-11-24 04:01:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 597 transitions. [2019-11-24 04:01:47,813 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 597 transitions. Word has length 41 [2019-11-24 04:01:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:01:47,813 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 597 transitions. [2019-11-24 04:01:47,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:01:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 597 transitions. [2019-11-24 04:01:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-24 04:01:47,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:01:47,815 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:01:47,817 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:01:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:01:47,817 INFO L82 PathProgramCache]: Analyzing trace with hash 816218118, now seen corresponding path program 1 times [2019-11-24 04:01:47,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:01:47,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599706276] [2019-11-24 04:01:47,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:01:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:01:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:01:48,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599706276] [2019-11-24 04:01:48,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948867391] [2019-11-24 04:01:48,539 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 04:01:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:01:50,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-24 04:01:50,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:01:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-24 04:01:50,196 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:01:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-24 04:01:50,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 04:01:50,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [4] total 7 [2019-11-24 04:01:50,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035594964] [2019-11-24 04:01:50,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:01:50,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:01:50,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:01:50,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:01:50,206 INFO L87 Difference]: Start difference. First operand 380 states and 597 transitions. Second operand 5 states. [2019-11-24 04:01:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:01:52,430 INFO L93 Difference]: Finished difference Result 1120 states and 1743 transitions. [2019-11-24 04:01:52,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 04:01:52,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-11-24 04:01:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:01:52,436 INFO L225 Difference]: With dead ends: 1120 [2019-11-24 04:01:52,436 INFO L226 Difference]: Without dead ends: 720 [2019-11-24 04:01:52,441 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:01:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2019-11-24 04:01:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 374. [2019-11-24 04:01:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2019-11-24 04:01:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 579 transitions. [2019-11-24 04:01:52,474 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 579 transitions. Word has length 46 [2019-11-24 04:01:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:01:52,476 INFO L462 AbstractCegarLoop]: Abstraction has 374 states and 579 transitions. [2019-11-24 04:01:52,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:01:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 579 transitions. [2019-11-24 04:01:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-24 04:01:52,484 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:01:52,485 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:01:52,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:01:52,701 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:01:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:01:52,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1973245738, now seen corresponding path program 1 times [2019-11-24 04:01:52,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:01:52,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626909729] [2019-11-24 04:01:52,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:01:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:01:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:01:53,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626909729] [2019-11-24 04:01:53,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40214391] [2019-11-24 04:01:53,483 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 04:01:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:01:55,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-24 04:01:55,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:01:55,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:01:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-24 04:01:55,293 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:01:55,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:01:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 04:01:55,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 04:01:55,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2019-11-24 04:01:55,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344914462] [2019-11-24 04:01:55,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:01:55,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:01:55,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:01:55,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:01:55,406 INFO L87 Difference]: Start difference. First operand 374 states and 579 transitions. Second operand 4 states. [2019-11-24 04:02:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:02:02,400 INFO L93 Difference]: Finished difference Result 940 states and 1468 transitions. [2019-11-24 04:02:02,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:02:02,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-24 04:02:02,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:02:02,406 INFO L225 Difference]: With dead ends: 940 [2019-11-24 04:02:02,406 INFO L226 Difference]: Without dead ends: 576 [2019-11-24 04:02:02,407 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:02:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-11-24 04:02:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 374. [2019-11-24 04:02:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2019-11-24 04:02:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 579 transitions. [2019-11-24 04:02:02,426 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 579 transitions. Word has length 47 [2019-11-24 04:02:02,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:02:02,427 INFO L462 AbstractCegarLoop]: Abstraction has 374 states and 579 transitions. [2019-11-24 04:02:02,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:02:02,427 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 579 transitions. [2019-11-24 04:02:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-24 04:02:02,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:02,428 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:02,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:02:02,645 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:02,645 INFO L82 PathProgramCache]: Analyzing trace with hash -43365099, now seen corresponding path program 1 times [2019-11-24 04:02:02,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:02,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394973223] [2019-11-24 04:02:02,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:02:02,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394973223] [2019-11-24 04:02:02,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079245656] [2019-11-24 04:02:02,876 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