/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:42:12,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:42:12,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:42:12,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:42:12,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:42:12,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:42:12,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:42:12,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:42:12,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:42:12,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:42:12,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:42:12,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:42:12,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:42:12,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:42:12,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:42:12,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:42:12,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:42:12,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:42:12,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:42:12,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:42:12,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:42:12,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:42:12,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:42:12,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:42:12,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:42:12,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:42:12,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:42:12,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:42:12,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:42:12,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:42:12,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:42:12,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:42:12,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:42:12,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:42:12,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:42:12,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:42:12,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:42:12,513 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:42:12,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:42:12,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:42:12,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:42:12,516 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:42:12,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:42:12,517 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:42:12,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:42:12,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:42:12,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:42:12,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:42:12,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:42:12,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:42:12,519 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:42:12,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:42:12,520 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:42:12,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:42:12,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:42:12,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:42:12,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:42:12,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:42:12,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:42:12,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:42:12,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:42:12,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:42:12,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:42:12,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:42:12,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:42:12,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:42:12,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:42:12,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:42:12,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:42:12,848 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:42:12,848 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:42:12,849 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-07 04:42:12,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2608dde/2f8bfbac89d24293a491348d72fd898f/FLAG19c8c2072 [2019-11-07 04:42:13,593 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:42:13,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-07 04:42:13,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2608dde/2f8bfbac89d24293a491348d72fd898f/FLAG19c8c2072 [2019-11-07 04:42:13,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2608dde/2f8bfbac89d24293a491348d72fd898f [2019-11-07 04:42:13,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:42:13,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:42:13,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:42:13,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:42:13,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:42:13,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:42:13" (1/1) ... [2019-11-07 04:42:13,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d9ebb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:13, skipping insertion in model container [2019-11-07 04:42:13,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:42:13" (1/1) ... [2019-11-07 04:42:13,830 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:42:14,002 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:42:15,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:42:15,202 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:42:15,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:42:15,627 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:42:15,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15 WrapperNode [2019-11-07 04:42:15,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:42:15,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:42:15,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:42:15,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:42:15,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (1/1) ... [2019-11-07 04:42:15,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (1/1) ... [2019-11-07 04:42:15,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (1/1) ... [2019-11-07 04:42:15,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (1/1) ... [2019-11-07 04:42:15,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (1/1) ... [2019-11-07 04:42:15,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (1/1) ... [2019-11-07 04:42:15,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (1/1) ... [2019-11-07 04:42:15,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:42:15,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:42:15,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:42:15,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:42:15,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (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 [2019-11-07 04:42:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:42:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:42:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:42:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:42:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 04:42:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 04:42:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-07 04:42:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:42:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-07 04:42:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-07 04:42:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-07 04:42:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-07 04:42:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-07 04:42:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-07 04:42:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-07 04:42:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:42:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:42:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:42:20,199 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:42:20,200 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 04:42:20,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:42:20 BoogieIcfgContainer [2019-11-07 04:42:20,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:42:20,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:42:20,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:42:20,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:42:20,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:42:13" (1/3) ... [2019-11-07 04:42:20,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcd6ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:42:20, skipping insertion in model container [2019-11-07 04:42:20,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:15" (2/3) ... [2019-11-07 04:42:20,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcd6ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:42:20, skipping insertion in model container [2019-11-07 04:42:20,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:42:20" (3/3) ... [2019-11-07 04:42:20,214 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-11-07 04:42:20,225 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:42:20,235 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-07 04:42:20,246 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-07 04:42:20,279 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:42:20,279 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:42:20,279 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:42:20,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:42:20,280 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:42:20,280 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:42:20,280 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:42:20,280 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:42:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states. [2019-11-07 04:42:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-07 04:42:20,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:20,342 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, 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] [2019-11-07 04:42:20,344 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:20,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:20,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1049131971, now seen corresponding path program 1 times [2019-11-07 04:42:20,361 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:20,361 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831235733] [2019-11-07 04:42:20,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:20,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831235733] [2019-11-07 04:42:20,995 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:20,995 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:42:20,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171650674] [2019-11-07 04:42:21,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:42:21,002 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:21,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:42:21,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:42:21,016 INFO L87 Difference]: Start difference. First operand 1240 states. Second operand 5 states. [2019-11-07 04:42:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:23,338 INFO L93 Difference]: Finished difference Result 2377 states and 4076 transitions. [2019-11-07 04:42:23,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:42:23,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-11-07 04:42:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:23,384 INFO L225 Difference]: With dead ends: 2377 [2019-11-07 04:42:23,385 INFO L226 Difference]: Without dead ends: 1498 [2019-11-07 04:42:23,401 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:42:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2019-11-07 04:42:23,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1492. [2019-11-07 04:42:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2019-11-07 04:42:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1900 transitions. [2019-11-07 04:42:23,578 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1900 transitions. Word has length 55 [2019-11-07 04:42:23,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:23,579 INFO L462 AbstractCegarLoop]: Abstraction has 1492 states and 1900 transitions. [2019-11-07 04:42:23,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:42:23,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1900 transitions. [2019-11-07 04:42:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 04:42:23,584 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:23,584 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, 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] [2019-11-07 04:42:23,585 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash -853550216, now seen corresponding path program 1 times [2019-11-07 04:42:23,586 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:23,586 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879750300] [2019-11-07 04:42:23,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:23,821 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879750300] [2019-11-07 04:42:23,822 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:23,822 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:42:23,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365318250] [2019-11-07 04:42:23,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:42:23,825 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:23,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:42:23,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:42:23,826 INFO L87 Difference]: Start difference. First operand 1492 states and 1900 transitions. Second operand 6 states. [2019-11-07 04:42:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:25,360 INFO L93 Difference]: Finished difference Result 3286 states and 4192 transitions. [2019-11-07 04:42:25,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:42:25,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-11-07 04:42:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:25,373 INFO L225 Difference]: With dead ends: 3286 [2019-11-07 04:42:25,374 INFO L226 Difference]: Without dead ends: 2368 [2019-11-07 04:42:25,377 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:42:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2019-11-07 04:42:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2345. [2019-11-07 04:42:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2345 states. [2019-11-07 04:42:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2997 transitions. [2019-11-07 04:42:25,489 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2997 transitions. Word has length 56 [2019-11-07 04:42:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:25,490 INFO L462 AbstractCegarLoop]: Abstraction has 2345 states and 2997 transitions. [2019-11-07 04:42:25,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:42:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2997 transitions. [2019-11-07 04:42:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 04:42:25,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:25,496 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, 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] [2019-11-07 04:42:25,496 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:25,496 INFO L82 PathProgramCache]: Analyzing trace with hash 618054128, now seen corresponding path program 1 times [2019-11-07 04:42:25,497 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:25,497 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014127457] [2019-11-07 04:42:25,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:25,655 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014127457] [2019-11-07 04:42:25,656 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:25,656 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:42:25,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123677065] [2019-11-07 04:42:25,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:42:25,657 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:25,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:42:25,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:42:25,661 INFO L87 Difference]: Start difference. First operand 2345 states and 2997 transitions. Second operand 6 states. [2019-11-07 04:42:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:27,136 INFO L93 Difference]: Finished difference Result 5347 states and 6862 transitions. [2019-11-07 04:42:27,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:42:27,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-11-07 04:42:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:27,161 INFO L225 Difference]: With dead ends: 5347 [2019-11-07 04:42:27,162 INFO L226 Difference]: Without dead ends: 3865 [2019-11-07 04:42:27,177 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:42:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2019-11-07 04:42:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3849. [2019-11-07 04:42:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3849 states. [2019-11-07 04:42:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 4898 transitions. [2019-11-07 04:42:27,440 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 4898 transitions. Word has length 56 [2019-11-07 04:42:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:27,443 INFO L462 AbstractCegarLoop]: Abstraction has 3849 states and 4898 transitions. [2019-11-07 04:42:27,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:42:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 4898 transitions. [2019-11-07 04:42:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 04:42:27,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:27,448 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, 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] [2019-11-07 04:42:27,448 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1627295014, now seen corresponding path program 1 times [2019-11-07 04:42:27,449 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:27,449 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795512318] [2019-11-07 04:42:27,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:27,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795512318] [2019-11-07 04:42:27,774 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:27,774 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:42:27,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798669222] [2019-11-07 04:42:27,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:42:27,775 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:27,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:42:27,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:42:27,776 INFO L87 Difference]: Start difference. First operand 3849 states and 4898 transitions. Second operand 9 states. [2019-11-07 04:42:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:31,063 INFO L93 Difference]: Finished difference Result 5687 states and 7418 transitions. [2019-11-07 04:42:31,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 04:42:31,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2019-11-07 04:42:31,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:31,100 INFO L225 Difference]: With dead ends: 5687 [2019-11-07 04:42:31,100 INFO L226 Difference]: Without dead ends: 5681 [2019-11-07 04:42:31,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:42:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2019-11-07 04:42:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 3849. [2019-11-07 04:42:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3849 states. [2019-11-07 04:42:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 4897 transitions. [2019-11-07 04:42:31,376 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 4897 transitions. Word has length 58 [2019-11-07 04:42:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:31,377 INFO L462 AbstractCegarLoop]: Abstraction has 3849 states and 4897 transitions. [2019-11-07 04:42:31,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:42:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 4897 transitions. [2019-11-07 04:42:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 04:42:31,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:31,382 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, 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] [2019-11-07 04:42:31,382 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:31,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1670672239, now seen corresponding path program 1 times [2019-11-07 04:42:31,383 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:31,383 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458622428] [2019-11-07 04:42:31,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:31,655 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458622428] [2019-11-07 04:42:31,655 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:31,655 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:42:31,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458119782] [2019-11-07 04:42:31,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:42:31,657 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:31,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:42:31,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:42:31,658 INFO L87 Difference]: Start difference. First operand 3849 states and 4897 transitions. Second operand 9 states. [2019-11-07 04:42:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:35,967 INFO L93 Difference]: Finished difference Result 9189 states and 12006 transitions. [2019-11-07 04:42:35,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:42:35,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2019-11-07 04:42:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:36,011 INFO L225 Difference]: With dead ends: 9189 [2019-11-07 04:42:36,011 INFO L226 Difference]: Without dead ends: 8864 [2019-11-07 04:42:36,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2019-11-07 04:42:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8864 states. [2019-11-07 04:42:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8864 to 3849. [2019-11-07 04:42:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3849 states. [2019-11-07 04:42:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 4896 transitions. [2019-11-07 04:42:36,299 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 4896 transitions. Word has length 58 [2019-11-07 04:42:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:36,300 INFO L462 AbstractCegarLoop]: Abstraction has 3849 states and 4896 transitions. [2019-11-07 04:42:36,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:42:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 4896 transitions. [2019-11-07 04:42:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 04:42:36,304 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:36,304 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, 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] [2019-11-07 04:42:36,305 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:36,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1060275482, now seen corresponding path program 1 times [2019-11-07 04:42:36,305 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:36,306 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440693422] [2019-11-07 04:42:36,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:36,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440693422] [2019-11-07 04:42:36,513 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:36,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:42:36,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250483935] [2019-11-07 04:42:36,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:42:36,515 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:36,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:42:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:42:36,515 INFO L87 Difference]: Start difference. First operand 3849 states and 4896 transitions. Second operand 8 states. [2019-11-07 04:42:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:39,325 INFO L93 Difference]: Finished difference Result 8269 states and 11100 transitions. [2019-11-07 04:42:39,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:42:39,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-11-07 04:42:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:39,356 INFO L225 Difference]: With dead ends: 8269 [2019-11-07 04:42:39,357 INFO L226 Difference]: Without dead ends: 7254 [2019-11-07 04:42:39,361 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:42:39,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7254 states. [2019-11-07 04:42:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7254 to 3849. [2019-11-07 04:42:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3849 states. [2019-11-07 04:42:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 4895 transitions. [2019-11-07 04:42:39,676 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 4895 transitions. Word has length 58 [2019-11-07 04:42:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:39,676 INFO L462 AbstractCegarLoop]: Abstraction has 3849 states and 4895 transitions. [2019-11-07 04:42:39,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:42:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 4895 transitions. [2019-11-07 04:42:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 04:42:39,680 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:39,681 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, 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] [2019-11-07 04:42:39,681 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1321462413, now seen corresponding path program 1 times [2019-11-07 04:42:39,682 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:39,682 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713445065] [2019-11-07 04:42:39,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:39,776 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713445065] [2019-11-07 04:42:39,776 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:39,776 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:42:39,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634377054] [2019-11-07 04:42:39,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:42:39,778 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:39,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:42:39,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:42:39,780 INFO L87 Difference]: Start difference. First operand 3849 states and 4895 transitions. Second operand 3 states. [2019-11-07 04:42:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:40,376 INFO L93 Difference]: Finished difference Result 6822 states and 8777 transitions. [2019-11-07 04:42:40,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:42:40,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-11-07 04:42:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:40,389 INFO L225 Difference]: With dead ends: 6822 [2019-11-07 04:42:40,390 INFO L226 Difference]: Without dead ends: 4669 [2019-11-07 04:42:40,398 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 [2019-11-07 04:42:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4669 states. [2019-11-07 04:42:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4669 to 4663. [2019-11-07 04:42:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4663 states. [2019-11-07 04:42:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 5839 transitions. [2019-11-07 04:42:40,821 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 5839 transitions. Word has length 59 [2019-11-07 04:42:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:40,824 INFO L462 AbstractCegarLoop]: Abstraction has 4663 states and 5839 transitions. [2019-11-07 04:42:40,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:42:40,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 5839 transitions. [2019-11-07 04:42:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 04:42:40,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:40,832 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, 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] [2019-11-07 04:42:40,832 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:40,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:40,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1942209389, now seen corresponding path program 1 times [2019-11-07 04:42:40,833 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:40,833 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078373335] [2019-11-07 04:42:40,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:40,951 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078373335] [2019-11-07 04:42:40,952 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:40,952 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:42:40,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387788499] [2019-11-07 04:42:40,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:42:40,953 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:42:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:42:40,954 INFO L87 Difference]: Start difference. First operand 4663 states and 5839 transitions. Second operand 3 states. [2019-11-07 04:42:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:41,679 INFO L93 Difference]: Finished difference Result 6941 states and 9014 transitions. [2019-11-07 04:42:41,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:42:41,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-11-07 04:42:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:41,698 INFO L225 Difference]: With dead ends: 6941 [2019-11-07 04:42:41,698 INFO L226 Difference]: Without dead ends: 5280 [2019-11-07 04:42:41,705 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 [2019-11-07 04:42:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2019-11-07 04:42:42,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 4904. [2019-11-07 04:42:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4904 states. [2019-11-07 04:42:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 6223 transitions. [2019-11-07 04:42:42,110 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 6223 transitions. Word has length 59 [2019-11-07 04:42:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:42,110 INFO L462 AbstractCegarLoop]: Abstraction has 4904 states and 6223 transitions. [2019-11-07 04:42:42,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:42:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 6223 transitions. [2019-11-07 04:42:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 04:42:42,115 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:42,115 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, 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] [2019-11-07 04:42:42,115 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:42,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:42,116 INFO L82 PathProgramCache]: Analyzing trace with hash -88721283, now seen corresponding path program 1 times [2019-11-07 04:42:42,116 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:42,116 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294447129] [2019-11-07 04:42:42,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:42,198 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294447129] [2019-11-07 04:42:42,198 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:42,199 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:42:42,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974459234] [2019-11-07 04:42:42,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:42:42,199 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:42,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:42:42,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:42:42,200 INFO L87 Difference]: Start difference. First operand 4904 states and 6223 transitions. Second operand 3 states. [2019-11-07 04:42:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:43,074 INFO L93 Difference]: Finished difference Result 8340 states and 10960 transitions. [2019-11-07 04:42:43,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:42:43,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-11-07 04:42:43,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:43,090 INFO L225 Difference]: With dead ends: 8340 [2019-11-07 04:42:43,090 INFO L226 Difference]: Without dead ends: 6034 [2019-11-07 04:42:43,098 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 [2019-11-07 04:42:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6034 states. [2019-11-07 04:42:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6034 to 5474. [2019-11-07 04:42:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5474 states. [2019-11-07 04:42:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5474 states to 5474 states and 7008 transitions. [2019-11-07 04:42:43,838 INFO L78 Accepts]: Start accepts. Automaton has 5474 states and 7008 transitions. Word has length 59 [2019-11-07 04:42:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:43,839 INFO L462 AbstractCegarLoop]: Abstraction has 5474 states and 7008 transitions. [2019-11-07 04:42:43,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:42:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5474 states and 7008 transitions. [2019-11-07 04:42:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 04:42:43,845 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:43,845 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, 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] [2019-11-07 04:42:43,846 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:43,846 INFO L82 PathProgramCache]: Analyzing trace with hash 23632550, now seen corresponding path program 1 times [2019-11-07 04:42:43,846 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:43,847 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743741836] [2019-11-07 04:42:43,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:42:43,961 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743741836] [2019-11-07 04:42:43,961 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:43,961 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:42:43,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326820601] [2019-11-07 04:42:43,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:42:43,963 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:43,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:42:43,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:42:43,963 INFO L87 Difference]: Start difference. First operand 5474 states and 7008 transitions. Second operand 3 states. [2019-11-07 04:42:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:44,888 INFO L93 Difference]: Finished difference Result 8947 states and 11629 transitions. [2019-11-07 04:42:44,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:42:44,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-11-07 04:42:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:44,899 INFO L225 Difference]: With dead ends: 8947 [2019-11-07 04:42:44,899 INFO L226 Difference]: Without dead ends: 4932 [2019-11-07 04:42:44,907 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 [2019-11-07 04:42:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2019-11-07 04:42:45,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4091. [2019-11-07 04:42:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4091 states. [2019-11-07 04:42:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 5201 transitions. [2019-11-07 04:42:45,347 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 5201 transitions. Word has length 60 [2019-11-07 04:42:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:45,347 INFO L462 AbstractCegarLoop]: Abstraction has 4091 states and 5201 transitions. [2019-11-07 04:42:45,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:42:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 5201 transitions. [2019-11-07 04:42:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-07 04:42:45,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:45,351 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, 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] [2019-11-07 04:42:45,351 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:45,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:45,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1752281124, now seen corresponding path program 1 times [2019-11-07 04:42:45,352 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:45,352 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540511282] [2019-11-07 04:42:45,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat