/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_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:42:42,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:42:42,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:42:42,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:42:42,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:42:42,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:42:42,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:42:42,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:42:42,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:42:42,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:42:42,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:42:42,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:42:42,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:42:42,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:42:42,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:42:42,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:42:42,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:42:42,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:42:42,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:42:42,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:42:42,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:42:42,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:42:42,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:42:42,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:42:42,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:42:42,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:42:42,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:42:42,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:42:42,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:42:42,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:42:42,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:42:42,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:42:42,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:42:42,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:42:42,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:42:42,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:42:42,594 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 04:42:42,608 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:42:42,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:42:42,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:42:42,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:42:42,610 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:42:42,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:42:42,611 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:42:42,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:42:42,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:42:42,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:42:42,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:42:42,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:42:42,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:42:42,612 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:42:42,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:42:42,613 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:42:42,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:42:42,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:42:42,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:42:42,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:42:42,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:42:42,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:42:42,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:42:42,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:42:42,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:42:42,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:42:42,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:42:42,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:42:42,615 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 04:42:42,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:42:42,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:42:42,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:42:42,923 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:42:42,924 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:42:42,925 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-07 04:42:43,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a09aad9f/498c9eb5cf554c96a579a7afb76a16e6/FLAG20bbbf2ec [2019-11-07 04:42:43,657 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:42:43,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-07 04:42:43,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a09aad9f/498c9eb5cf554c96a579a7afb76a16e6/FLAG20bbbf2ec [2019-11-07 04:42:43,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a09aad9f/498c9eb5cf554c96a579a7afb76a16e6 [2019-11-07 04:42:43,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:42:43,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:42:43,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:42:43,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:42:43,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:42:43,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:42:43" (1/1) ... [2019-11-07 04:42:43,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693563dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:43, skipping insertion in model container [2019-11-07 04:42:43,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:42:43" (1/1) ... [2019-11-07 04:42:43,943 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:42:44,021 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:42:44,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:42:44,693 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:42:45,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:42:45,136 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:42:45,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45 WrapperNode [2019-11-07 04:42:45,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:42:45,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:42:45,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:42:45,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:42:45,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (1/1) ... [2019-11-07 04:42:45,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (1/1) ... [2019-11-07 04:42:45,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (1/1) ... [2019-11-07 04:42:45,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (1/1) ... [2019-11-07 04:42:45,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (1/1) ... [2019-11-07 04:42:45,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (1/1) ... [2019-11-07 04:42:45,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (1/1) ... [2019-11-07 04:42:45,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:42:45,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:42:45,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:42:45,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:42:45,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (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 04:42:45,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:42:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:42:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:42:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:42:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 04:42:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 04:42:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-07 04:42:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:42:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-07 04:42:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-07 04:42:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-07 04:42:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-07 04:42:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-07 04:42:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-07 04:42:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-07 04:42:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:42:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:42:45,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:42:48,298 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:42:48,298 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 04:42:48,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:42:48 BoogieIcfgContainer [2019-11-07 04:42:48,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:42:48,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:42:48,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:42:48,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:42:48,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:42:43" (1/3) ... [2019-11-07 04:42:48,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c37423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:42:48, skipping insertion in model container [2019-11-07 04:42:48,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:42:45" (2/3) ... [2019-11-07 04:42:48,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c37423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:42:48, skipping insertion in model container [2019-11-07 04:42:48,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:42:48" (3/3) ... [2019-11-07 04:42:48,367 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-07 04:42:48,381 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:42:48,393 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-07 04:42:48,405 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-07 04:42:48,441 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:42:48,442 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:42:48,442 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:42:48,442 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:42:48,442 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:42:48,442 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:42:48,442 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:42:48,442 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:42:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2019-11-07 04:42:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:42:48,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:48,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:48,486 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:48,492 INFO L82 PathProgramCache]: Analyzing trace with hash 588212400, now seen corresponding path program 1 times [2019-11-07 04:42:48,500 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:48,501 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915747660] [2019-11-07 04:42:48,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:49,645 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 04:42:49,645 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915747660] [2019-11-07 04:42:49,646 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:49,647 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:42:49,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856509255] [2019-11-07 04:42:49,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:42:49,656 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:49,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:42:49,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:42:49,673 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2019-11-07 04:42:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:49,972 INFO L93 Difference]: Finished difference Result 799 states and 1397 transitions. [2019-11-07 04:42:49,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:42:49,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-11-07 04:42:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:50,013 INFO L225 Difference]: With dead ends: 799 [2019-11-07 04:42:50,013 INFO L226 Difference]: Without dead ends: 547 [2019-11-07 04:42:50,023 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:42:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-11-07 04:42:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 526. [2019-11-07 04:42:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-11-07 04:42:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 700 transitions. [2019-11-07 04:42:50,197 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 700 transitions. Word has length 121 [2019-11-07 04:42:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:50,198 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 700 transitions. [2019-11-07 04:42:50,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:42:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 700 transitions. [2019-11-07 04:42:50,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-07 04:42:50,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:50,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:50,203 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:50,204 INFO L82 PathProgramCache]: Analyzing trace with hash -2096026532, now seen corresponding path program 1 times [2019-11-07 04:42:50,204 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:50,204 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630979103] [2019-11-07 04:42:50,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:50,309 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 04:42:50,309 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630979103] [2019-11-07 04:42:50,309 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:50,310 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:42:50,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133445383] [2019-11-07 04:42:50,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:42:50,312 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:42:50,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:42:50,313 INFO L87 Difference]: Start difference. First operand 526 states and 700 transitions. Second operand 3 states. [2019-11-07 04:42:50,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:50,437 INFO L93 Difference]: Finished difference Result 1158 states and 1577 transitions. [2019-11-07 04:42:50,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:42:50,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-11-07 04:42:50,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:50,443 INFO L225 Difference]: With dead ends: 1158 [2019-11-07 04:42:50,443 INFO L226 Difference]: Without dead ends: 698 [2019-11-07 04:42:50,450 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 04:42:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-11-07 04:42:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 635. [2019-11-07 04:42:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-07 04:42:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 874 transitions. [2019-11-07 04:42:50,496 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 874 transitions. Word has length 123 [2019-11-07 04:42:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:50,499 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 874 transitions. [2019-11-07 04:42:50,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:42:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 874 transitions. [2019-11-07 04:42:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-07 04:42:50,509 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:50,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:50,510 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:50,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:50,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1793558548, now seen corresponding path program 1 times [2019-11-07 04:42:50,511 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:50,512 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244956206] [2019-11-07 04:42:50,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:50,643 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 04:42:50,643 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244956206] [2019-11-07 04:42:50,643 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:50,644 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:42:50,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723658978] [2019-11-07 04:42:50,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:42:50,646 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:50,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:42:50,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:42:50,651 INFO L87 Difference]: Start difference. First operand 635 states and 874 transitions. Second operand 3 states. [2019-11-07 04:42:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:50,768 INFO L93 Difference]: Finished difference Result 1436 states and 2028 transitions. [2019-11-07 04:42:50,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:42:50,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-11-07 04:42:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:50,773 INFO L225 Difference]: With dead ends: 1436 [2019-11-07 04:42:50,774 INFO L226 Difference]: Without dead ends: 892 [2019-11-07 04:42:50,775 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 04:42:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2019-11-07 04:42:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 839. [2019-11-07 04:42:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2019-11-07 04:42:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1202 transitions. [2019-11-07 04:42:50,819 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1202 transitions. Word has length 123 [2019-11-07 04:42:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:50,820 INFO L462 AbstractCegarLoop]: Abstraction has 839 states and 1202 transitions. [2019-11-07 04:42:50,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:42:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1202 transitions. [2019-11-07 04:42:50,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 04:42:50,823 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:50,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:50,823 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:50,824 INFO L82 PathProgramCache]: Analyzing trace with hash -214950358, now seen corresponding path program 1 times [2019-11-07 04:42:50,824 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:50,824 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625535975] [2019-11-07 04:42:50,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:51,252 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2019-11-07 04:42:51,409 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2019-11-07 04:42:51,614 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 04:42:51,614 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625535975] [2019-11-07 04:42:51,615 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:51,615 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:42:51,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362050794] [2019-11-07 04:42:51,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:42:51,617 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:51,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:42:51,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:42:51,618 INFO L87 Difference]: Start difference. First operand 839 states and 1202 transitions. Second operand 7 states. [2019-11-07 04:42:51,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:51,963 INFO L93 Difference]: Finished difference Result 2522 states and 3737 transitions. [2019-11-07 04:42:51,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:42:51,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2019-11-07 04:42:51,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:51,973 INFO L225 Difference]: With dead ends: 2522 [2019-11-07 04:42:51,974 INFO L226 Difference]: Without dead ends: 1830 [2019-11-07 04:42:51,976 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:42:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2019-11-07 04:42:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1192. [2019-11-07 04:42:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2019-11-07 04:42:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1722 transitions. [2019-11-07 04:42:52,059 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1722 transitions. Word has length 126 [2019-11-07 04:42:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:52,059 INFO L462 AbstractCegarLoop]: Abstraction has 1192 states and 1722 transitions. [2019-11-07 04:42:52,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:42:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1722 transitions. [2019-11-07 04:42:52,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 04:42:52,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:52,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:52,062 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:52,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:52,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1464091590, now seen corresponding path program 1 times [2019-11-07 04:42:52,063 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:52,063 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582089599] [2019-11-07 04:42:52,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:52,195 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 04:42:52,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582089599] [2019-11-07 04:42:52,196 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:52,196 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:42:52,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882354875] [2019-11-07 04:42:52,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:42:52,197 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:52,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:42:52,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:42:52,198 INFO L87 Difference]: Start difference. First operand 1192 states and 1722 transitions. Second operand 6 states. [2019-11-07 04:42:52,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:52,773 INFO L93 Difference]: Finished difference Result 2984 states and 4413 transitions. [2019-11-07 04:42:52,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:42:52,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-11-07 04:42:52,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:52,785 INFO L225 Difference]: With dead ends: 2984 [2019-11-07 04:42:52,785 INFO L226 Difference]: Without dead ends: 1897 [2019-11-07 04:42:52,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:42:52,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2019-11-07 04:42:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1813. [2019-11-07 04:42:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2019-11-07 04:42:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2722 transitions. [2019-11-07 04:42:52,940 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2722 transitions. Word has length 126 [2019-11-07 04:42:52,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:52,941 INFO L462 AbstractCegarLoop]: Abstraction has 1813 states and 2722 transitions. [2019-11-07 04:42:52,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:42:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2722 transitions. [2019-11-07 04:42:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 04:42:52,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:52,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:52,944 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:52,945 INFO L82 PathProgramCache]: Analyzing trace with hash -406353067, now seen corresponding path program 1 times [2019-11-07 04:42:52,945 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:52,945 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285753283] [2019-11-07 04:42:52,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:53,338 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 04:42:53,338 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285753283] [2019-11-07 04:42:53,339 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:53,340 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:42:53,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618308166] [2019-11-07 04:42:53,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:42:53,341 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:53,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:42:53,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:42:53,341 INFO L87 Difference]: Start difference. First operand 1813 states and 2722 transitions. Second operand 5 states. [2019-11-07 04:42:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:53,715 INFO L93 Difference]: Finished difference Result 3438 states and 5192 transitions. [2019-11-07 04:42:53,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:42:53,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-11-07 04:42:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:53,730 INFO L225 Difference]: With dead ends: 3438 [2019-11-07 04:42:53,731 INFO L226 Difference]: Without dead ends: 2811 [2019-11-07 04:42:53,733 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:42:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2019-11-07 04:42:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2790. [2019-11-07 04:42:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2790 states. [2019-11-07 04:42:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4226 transitions. [2019-11-07 04:42:53,970 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4226 transitions. Word has length 126 [2019-11-07 04:42:53,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:53,970 INFO L462 AbstractCegarLoop]: Abstraction has 2790 states and 4226 transitions. [2019-11-07 04:42:53,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:42:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4226 transitions. [2019-11-07 04:42:53,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 04:42:53,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:53,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:53,973 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:53,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:53,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1334235076, now seen corresponding path program 1 times [2019-11-07 04:42:53,974 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:53,974 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572905605] [2019-11-07 04:42:53,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:54,054 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 04:42:54,055 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572905605] [2019-11-07 04:42:54,055 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:54,055 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:42:54,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265660528] [2019-11-07 04:42:54,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:42:54,056 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:54,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:42:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:42:54,057 INFO L87 Difference]: Start difference. First operand 2790 states and 4226 transitions. Second operand 3 states. [2019-11-07 04:42:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:54,501 INFO L93 Difference]: Finished difference Result 7454 states and 11497 transitions. [2019-11-07 04:42:54,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:42:54,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-11-07 04:42:54,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:54,533 INFO L225 Difference]: With dead ends: 7454 [2019-11-07 04:42:54,534 INFO L226 Difference]: Without dead ends: 4709 [2019-11-07 04:42:54,546 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 04:42:54,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2019-11-07 04:42:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4520. [2019-11-07 04:42:55,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4520 states. [2019-11-07 04:42:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 6986 transitions. [2019-11-07 04:42:55,054 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 6986 transitions. Word has length 128 [2019-11-07 04:42:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:55,055 INFO L462 AbstractCegarLoop]: Abstraction has 4520 states and 6986 transitions. [2019-11-07 04:42:55,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:42:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 6986 transitions. [2019-11-07 04:42:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:42:55,057 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:55,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:55,058 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:55,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:55,058 INFO L82 PathProgramCache]: Analyzing trace with hash -144793796, now seen corresponding path program 1 times [2019-11-07 04:42:55,059 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:55,059 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64630651] [2019-11-07 04:42:55,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:55,222 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 04:42:55,223 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64630651] [2019-11-07 04:42:55,223 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:55,223 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:42:55,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380066517] [2019-11-07 04:42:55,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:42:55,225 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:55,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:42:55,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:42:55,226 INFO L87 Difference]: Start difference. First operand 4520 states and 6986 transitions. Second operand 5 states. [2019-11-07 04:42:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:55,857 INFO L93 Difference]: Finished difference Result 8997 states and 13926 transitions. [2019-11-07 04:42:55,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:42:55,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-11-07 04:42:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:55,886 INFO L225 Difference]: With dead ends: 8997 [2019-11-07 04:42:55,886 INFO L226 Difference]: Without dead ends: 4520 [2019-11-07 04:42:55,895 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 04:42:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2019-11-07 04:42:56,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4520. [2019-11-07 04:42:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4520 states. [2019-11-07 04:42:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 6896 transitions. [2019-11-07 04:42:56,293 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 6896 transitions. Word has length 131 [2019-11-07 04:42:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:56,294 INFO L462 AbstractCegarLoop]: Abstraction has 4520 states and 6896 transitions. [2019-11-07 04:42:56,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:42:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 6896 transitions. [2019-11-07 04:42:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:42:56,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:56,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:56,298 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash 156140215, now seen corresponding path program 1 times [2019-11-07 04:42:56,298 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:56,299 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410574203] [2019-11-07 04:42:56,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:56,732 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 04:42:56,733 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410574203] [2019-11-07 04:42:56,733 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:42:56,734 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:42:56,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537513381] [2019-11-07 04:42:56,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:42:56,735 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:42:56,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:42:56,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:42:56,736 INFO L87 Difference]: Start difference. First operand 4520 states and 6896 transitions. Second operand 5 states. [2019-11-07 04:42:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:42:57,388 INFO L93 Difference]: Finished difference Result 12085 states and 18447 transitions. [2019-11-07 04:42:57,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:42:57,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-11-07 04:42:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:42:57,444 INFO L225 Difference]: With dead ends: 12085 [2019-11-07 04:42:57,449 INFO L226 Difference]: Without dead ends: 7697 [2019-11-07 04:42:57,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:42:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2019-11-07 04:42:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 7676. [2019-11-07 04:42:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7676 states. [2019-11-07 04:42:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7676 states to 7676 states and 11602 transitions. [2019-11-07 04:42:58,273 INFO L78 Accepts]: Start accepts. Automaton has 7676 states and 11602 transitions. Word has length 131 [2019-11-07 04:42:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:42:58,274 INFO L462 AbstractCegarLoop]: Abstraction has 7676 states and 11602 transitions. [2019-11-07 04:42:58,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:42:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7676 states and 11602 transitions. [2019-11-07 04:42:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 04:42:58,278 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:42:58,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:42:58,279 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:42:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:42:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1833269574, now seen corresponding path program 1 times [2019-11-07 04:42:58,280 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:42:58,280 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776750006] [2019-11-07 04:42:58,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:42:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:42:59,467 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-11-07 04:42:59,607 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-11-07 04:42:59,754 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-11-07 04:42:59,944 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-11-07 04:43:00,124 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-11-07 04:43:00,347 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-11-07 04:43:00,594 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2019-11-07 04:43:00,825 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-11-07 04:43:01,010 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2019-11-07 04:43:01,246 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-11-07 04:43:01,414 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-11-07 04:43:01,592 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-11-07 04:43:01,776 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-11-07 04:43:02,121 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-11-07 04:43:02,322 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-11-07 04:43:02,483 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-11-07 04:43:04,360 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 04:43:04,361 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776750006] [2019-11-07 04:43:04,361 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:43:04,361 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2019-11-07 04:43:04,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239024784] [2019-11-07 04:43:04,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-07 04:43:04,362 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:43:04,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-07 04:43:04,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 04:43:04,363 INFO L87 Difference]: Start difference. First operand 7676 states and 11602 transitions. Second operand 35 states. [2019-11-07 04:43:04,889 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2019-11-07 04:43:06,104 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-11-07 04:43:06,426 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-11-07 04:43:06,738 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-11-07 04:43:07,100 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-11-07 04:43:07,415 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-11-07 04:43:07,940 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-11-07 04:43:08,409 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2019-11-07 04:43:09,103 WARN L191 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 100 [2019-11-07 04:43:09,720 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-11-07 04:43:10,284 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 108 [2019-11-07 04:43:11,121 WARN L191 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 114 [2019-11-07 04:43:11,813 WARN L191 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 108 [2019-11-07 04:43:12,408 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 103 [2019-11-07 04:43:13,190 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 113 [2019-11-07 04:43:13,758 WARN L191 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 105 [2019-11-07 04:43:14,678 WARN L191 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 108 [2019-11-07 04:43:15,453 WARN L191 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 111 [2019-11-07 04:43:16,088 WARN L191 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2019-11-07 04:43:16,517 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-11-07 04:43:19,999 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61