/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:06:01,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:06:01,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:06:01,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:06:01,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:06:01,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:06:01,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:06:01,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:06:01,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:06:01,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:06:01,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:06:01,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:06:01,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:06:01,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:06:01,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:06:01,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:06:01,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:06:01,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:06:01,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:06:01,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:06:01,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:06:01,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:06:01,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:06:01,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:06:01,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:06:01,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:06:01,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:06:01,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:06:01,054 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 01:06:01,070 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:06:01,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:06:01,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:06:01,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:06:01,072 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:06:01,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:06:01,073 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:06:01,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:06:01,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:06:01,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:06:01,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:06:01,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:06:01,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:06:01,074 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:06:01,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:06:01,075 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:06:01,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:06:01,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:06:01,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:06:01,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:06:01,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:06:01,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:06:01,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:06:01,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:06:01,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:06:01,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:06:01,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:06:01,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:06:01,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 01:06:01,338 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:06:01,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:06:01,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:06:01,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:06:01,356 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:06:01,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-07 01:06:01,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da536073/7badd969bf484f818428440bf4ff45bd/FLAG9018c78f3 [2019-11-07 01:06:02,113 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:06:02,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-07 01:06:02,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da536073/7badd969bf484f818428440bf4ff45bd/FLAG9018c78f3 [2019-11-07 01:06:02,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da536073/7badd969bf484f818428440bf4ff45bd [2019-11-07 01:06:02,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:06:02,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:06:02,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:06:02,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:06:02,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:06:02,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:06:02" (1/1) ... [2019-11-07 01:06:02,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b8879d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:02, skipping insertion in model container [2019-11-07 01:06:02,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:06:02" (1/1) ... [2019-11-07 01:06:02,281 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:06:02,446 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:06:03,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:06:03,483 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:06:03,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:06:03,891 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:06:03,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03 WrapperNode [2019-11-07 01:06:03,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:06:03,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:06:03,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:06:03,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:06:03,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (1/1) ... [2019-11-07 01:06:03,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (1/1) ... [2019-11-07 01:06:03,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (1/1) ... [2019-11-07 01:06:03,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (1/1) ... [2019-11-07 01:06:04,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (1/1) ... [2019-11-07 01:06:04,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (1/1) ... [2019-11-07 01:06:04,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (1/1) ... [2019-11-07 01:06:04,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:06:04,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:06:04,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:06:04,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:06:04,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (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 01:06:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:06:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:06:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:06:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:06:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 01:06:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-07 01:06:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-07 01:06:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-07 01:06:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 01:06:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-07 01:06:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-07 01:06:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-07 01:06:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-07 01:06:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-07 01:06:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-07 01:06:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-07 01:06:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:06:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:06:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:06:07,505 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:06:07,505 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 01:06:07,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:07 BoogieIcfgContainer [2019-11-07 01:06:07,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:06:07,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:06:07,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:06:07,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:06:07,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:06:02" (1/3) ... [2019-11-07 01:06:07,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d193d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:07, skipping insertion in model container [2019-11-07 01:06:07,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:03" (2/3) ... [2019-11-07 01:06:07,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d193d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:07, skipping insertion in model container [2019-11-07 01:06:07,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:07" (3/3) ... [2019-11-07 01:06:07,516 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-07 01:06:07,527 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:06:07,550 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-07 01:06:07,562 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-07 01:06:07,612 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:06:07,613 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:06:07,613 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:06:07,613 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:06:07,613 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:06:07,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:06:07,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:06:07,613 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:06:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states. [2019-11-07 01:06:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-07 01:06:07,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:07,688 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 01:06:07,691 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:07,702 INFO L82 PathProgramCache]: Analyzing trace with hash -261683, now seen corresponding path program 1 times [2019-11-07 01:06:07,711 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:07,712 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103523463] [2019-11-07 01:06:07,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:08,355 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 01:06:08,356 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103523463] [2019-11-07 01:06:08,356 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:08,357 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 01:06:08,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520916670] [2019-11-07 01:06:08,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 01:06:08,367 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:08,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 01:06:08,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:06:08,385 INFO L87 Difference]: Start difference. First operand 1259 states. Second operand 5 states. [2019-11-07 01:06:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:10,412 INFO L93 Difference]: Finished difference Result 2475 states and 4331 transitions. [2019-11-07 01:06:10,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:10,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-11-07 01:06:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:10,441 INFO L225 Difference]: With dead ends: 2475 [2019-11-07 01:06:10,441 INFO L226 Difference]: Without dead ends: 1554 [2019-11-07 01:06:10,451 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:06:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2019-11-07 01:06:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1548. [2019-11-07 01:06:10,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-11-07 01:06:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2090 transitions. [2019-11-07 01:06:10,602 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2090 transitions. Word has length 55 [2019-11-07 01:06:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:10,603 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 2090 transitions. [2019-11-07 01:06:10,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 01:06:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2090 transitions. [2019-11-07 01:06:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 01:06:10,609 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:10,609 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 01:06:10,610 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:10,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:10,610 INFO L82 PathProgramCache]: Analyzing trace with hash -19234945, now seen corresponding path program 1 times [2019-11-07 01:06:10,610 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:10,611 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389787732] [2019-11-07 01:06:10,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:10,801 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 01:06:10,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389787732] [2019-11-07 01:06:10,802 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:10,802 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:06:10,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964038489] [2019-11-07 01:06:10,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:06:10,805 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:06:10,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:06:10,806 INFO L87 Difference]: Start difference. First operand 1548 states and 2090 transitions. Second operand 6 states. [2019-11-07 01:06:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:12,219 INFO L93 Difference]: Finished difference Result 3384 states and 4662 transitions. [2019-11-07 01:06:12,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:12,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-11-07 01:06:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:12,232 INFO L225 Difference]: With dead ends: 3384 [2019-11-07 01:06:12,232 INFO L226 Difference]: Without dead ends: 2296 [2019-11-07 01:06:12,236 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 01:06:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2019-11-07 01:06:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2280. [2019-11-07 01:06:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2019-11-07 01:06:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3126 transitions. [2019-11-07 01:06:12,343 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3126 transitions. Word has length 56 [2019-11-07 01:06:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:12,344 INFO L462 AbstractCegarLoop]: Abstraction has 2280 states and 3126 transitions. [2019-11-07 01:06:12,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:06:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3126 transitions. [2019-11-07 01:06:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 01:06:12,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:12,349 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 01:06:12,349 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:12,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1128300978, now seen corresponding path program 1 times [2019-11-07 01:06:12,350 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:12,350 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645779599] [2019-11-07 01:06:12,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:12,495 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 01:06:12,496 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645779599] [2019-11-07 01:06:12,496 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:12,496 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:06:12,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997486965] [2019-11-07 01:06:12,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:06:12,498 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:12,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:06:12,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:06:12,499 INFO L87 Difference]: Start difference. First operand 2280 states and 3126 transitions. Second operand 6 states. [2019-11-07 01:06:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:14,012 INFO L93 Difference]: Finished difference Result 5893 states and 8147 transitions. [2019-11-07 01:06:14,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 01:06:14,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-11-07 01:06:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:14,042 INFO L225 Difference]: With dead ends: 5893 [2019-11-07 01:06:14,043 INFO L226 Difference]: Without dead ends: 4335 [2019-11-07 01:06:14,048 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 01:06:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2019-11-07 01:06:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 4315. [2019-11-07 01:06:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2019-11-07 01:06:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5971 transitions. [2019-11-07 01:06:14,325 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5971 transitions. Word has length 56 [2019-11-07 01:06:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:14,325 INFO L462 AbstractCegarLoop]: Abstraction has 4315 states and 5971 transitions. [2019-11-07 01:06:14,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:06:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5971 transitions. [2019-11-07 01:06:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 01:06:14,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:14,332 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] [2019-11-07 01:06:14,332 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:14,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1514896090, now seen corresponding path program 1 times [2019-11-07 01:06:14,333 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:14,333 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978763661] [2019-11-07 01:06:14,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:14,706 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 01:06:14,707 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978763661] [2019-11-07 01:06:14,707 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:14,707 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 01:06:14,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782382215] [2019-11-07 01:06:14,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 01:06:14,708 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:14,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 01:06:14,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:06:14,709 INFO L87 Difference]: Start difference. First operand 4315 states and 5971 transitions. Second operand 9 states. [2019-11-07 01:06:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:18,272 INFO L93 Difference]: Finished difference Result 8360 states and 12149 transitions. [2019-11-07 01:06:18,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-07 01:06:18,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-11-07 01:06:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:18,327 INFO L225 Difference]: With dead ends: 8360 [2019-11-07 01:06:18,327 INFO L226 Difference]: Without dead ends: 8355 [2019-11-07 01:06:18,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2019-11-07 01:06:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8355 states. [2019-11-07 01:06:18,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8355 to 4315. [2019-11-07 01:06:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2019-11-07 01:06:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5970 transitions. [2019-11-07 01:06:18,750 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5970 transitions. Word has length 57 [2019-11-07 01:06:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:18,751 INFO L462 AbstractCegarLoop]: Abstraction has 4315 states and 5970 transitions. [2019-11-07 01:06:18,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 01:06:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5970 transitions. [2019-11-07 01:06:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 01:06:18,757 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:18,757 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] [2019-11-07 01:06:18,757 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:18,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:18,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1846472251, now seen corresponding path program 1 times [2019-11-07 01:06:18,758 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:18,759 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906319796] [2019-11-07 01:06:18,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:18,967 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 01:06:18,968 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906319796] [2019-11-07 01:06:18,968 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:18,968 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 01:06:18,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139059693] [2019-11-07 01:06:18,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 01:06:18,969 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:18,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 01:06:18,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:06:18,970 INFO L87 Difference]: Start difference. First operand 4315 states and 5970 transitions. Second operand 9 states. [2019-11-07 01:06:22,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:22,847 INFO L93 Difference]: Finished difference Result 12184 states and 17666 transitions. [2019-11-07 01:06:22,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 01:06:22,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-11-07 01:06:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:22,909 INFO L225 Difference]: With dead ends: 12184 [2019-11-07 01:06:22,909 INFO L226 Difference]: Without dead ends: 11066 [2019-11-07 01:06:22,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2019-11-07 01:06:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11066 states. [2019-11-07 01:06:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11066 to 4315. [2019-11-07 01:06:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2019-11-07 01:06:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5969 transitions. [2019-11-07 01:06:23,332 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5969 transitions. Word has length 57 [2019-11-07 01:06:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:23,333 INFO L462 AbstractCegarLoop]: Abstraction has 4315 states and 5969 transitions. [2019-11-07 01:06:23,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 01:06:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5969 transitions. [2019-11-07 01:06:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 01:06:23,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:23,338 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] [2019-11-07 01:06:23,338 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1057258768, now seen corresponding path program 1 times [2019-11-07 01:06:23,339 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:23,339 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569723105] [2019-11-07 01:06:23,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:23,542 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 01:06:23,543 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569723105] [2019-11-07 01:06:23,543 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:23,544 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 01:06:23,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564048664] [2019-11-07 01:06:23,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 01:06:23,545 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:23,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 01:06:23,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 01:06:23,545 INFO L87 Difference]: Start difference. First operand 4315 states and 5969 transitions. Second operand 8 states. [2019-11-07 01:06:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:26,646 INFO L93 Difference]: Finished difference Result 9387 states and 13823 transitions. [2019-11-07 01:06:26,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 01:06:26,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-11-07 01:06:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:26,664 INFO L225 Difference]: With dead ends: 9387 [2019-11-07 01:06:26,665 INFO L226 Difference]: Without dead ends: 8061 [2019-11-07 01:06:26,670 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-11-07 01:06:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8061 states. [2019-11-07 01:06:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8061 to 4315. [2019-11-07 01:06:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2019-11-07 01:06:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5968 transitions. [2019-11-07 01:06:26,939 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5968 transitions. Word has length 57 [2019-11-07 01:06:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:26,939 INFO L462 AbstractCegarLoop]: Abstraction has 4315 states and 5968 transitions. [2019-11-07 01:06:26,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 01:06:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5968 transitions. [2019-11-07 01:06:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 01:06:26,949 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:26,950 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 01:06:26,950 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:26,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1610727569, now seen corresponding path program 1 times [2019-11-07 01:06:26,953 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:26,954 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294323723] [2019-11-07 01:06:26,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:27,035 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 01:06:27,036 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294323723] [2019-11-07 01:06:27,036 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:27,036 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:27,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723798860] [2019-11-07 01:06:27,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:27,038 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:27,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:27,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:27,039 INFO L87 Difference]: Start difference. First operand 4315 states and 5968 transitions. Second operand 3 states. [2019-11-07 01:06:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:27,543 INFO L93 Difference]: Finished difference Result 7979 states and 11287 transitions. [2019-11-07 01:06:27,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:06:27,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-11-07 01:06:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:27,557 INFO L225 Difference]: With dead ends: 7979 [2019-11-07 01:06:27,557 INFO L226 Difference]: Without dead ends: 5459 [2019-11-07 01:06:27,563 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 01:06:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2019-11-07 01:06:27,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 5453. [2019-11-07 01:06:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2019-11-07 01:06:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 7525 transitions. [2019-11-07 01:06:27,893 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 7525 transitions. Word has length 58 [2019-11-07 01:06:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:27,894 INFO L462 AbstractCegarLoop]: Abstraction has 5453 states and 7525 transitions. [2019-11-07 01:06:27,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:06:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 7525 transitions. [2019-11-07 01:06:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 01:06:27,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:27,900 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 01:06:27,900 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:27,901 INFO L82 PathProgramCache]: Analyzing trace with hash 616197657, now seen corresponding path program 1 times [2019-11-07 01:06:27,901 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:27,901 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577013497] [2019-11-07 01:06:27,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:28,001 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 01:06:28,002 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577013497] [2019-11-07 01:06:28,002 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:28,002 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:28,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062941975] [2019-11-07 01:06:28,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:28,003 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:28,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:28,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:28,003 INFO L87 Difference]: Start difference. First operand 5453 states and 7525 transitions. Second operand 3 states. [2019-11-07 01:06:28,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:28,400 INFO L93 Difference]: Finished difference Result 8882 states and 12823 transitions. [2019-11-07 01:06:28,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:06:28,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-11-07 01:06:28,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:28,418 INFO L225 Difference]: With dead ends: 8882 [2019-11-07 01:06:28,418 INFO L226 Difference]: Without dead ends: 6617 [2019-11-07 01:06:28,424 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 01:06:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2019-11-07 01:06:28,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6025. [2019-11-07 01:06:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6025 states. [2019-11-07 01:06:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 8443 transitions. [2019-11-07 01:06:28,878 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 8443 transitions. Word has length 58 [2019-11-07 01:06:28,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:28,879 INFO L462 AbstractCegarLoop]: Abstraction has 6025 states and 8443 transitions. [2019-11-07 01:06:28,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:06:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 8443 transitions. [2019-11-07 01:06:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 01:06:28,885 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:28,885 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 01:06:28,885 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:28,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:28,886 INFO L82 PathProgramCache]: Analyzing trace with hash -700313303, now seen corresponding path program 1 times [2019-11-07 01:06:28,886 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:28,886 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616497186] [2019-11-07 01:06:28,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:28,997 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 01:06:28,997 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616497186] [2019-11-07 01:06:28,998 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:28,998 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:28,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165501481] [2019-11-07 01:06:28,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:28,999 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:28,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:28,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:29,000 INFO L87 Difference]: Start difference. First operand 6025 states and 8443 transitions. Second operand 3 states. [2019-11-07 01:06:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:29,920 INFO L93 Difference]: Finished difference Result 11249 states and 16372 transitions. [2019-11-07 01:06:29,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:06:29,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-11-07 01:06:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:29,938 INFO L225 Difference]: With dead ends: 11249 [2019-11-07 01:06:29,938 INFO L226 Difference]: Without dead ends: 8007 [2019-11-07 01:06:29,944 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 01:06:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8007 states. [2019-11-07 01:06:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8007 to 7105. [2019-11-07 01:06:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7105 states. [2019-11-07 01:06:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10025 transitions. [2019-11-07 01:06:30,589 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10025 transitions. Word has length 58 [2019-11-07 01:06:30,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:30,589 INFO L462 AbstractCegarLoop]: Abstraction has 7105 states and 10025 transitions. [2019-11-07 01:06:30,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:06:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10025 transitions. [2019-11-07 01:06:30,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:06:30,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:30,594 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 01:06:30,594 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:30,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1592896813, now seen corresponding path program 1 times [2019-11-07 01:06:30,595 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:30,595 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253442433] [2019-11-07 01:06:30,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:30,659 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 01:06:30,659 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253442433] [2019-11-07 01:06:30,659 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:30,659 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:30,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786167737] [2019-11-07 01:06:30,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:30,660 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:30,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:30,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:30,661 INFO L87 Difference]: Start difference. First operand 7105 states and 10025 transitions. Second operand 3 states. [2019-11-07 01:06:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:31,700 INFO L93 Difference]: Finished difference Result 13710 states and 19567 transitions. [2019-11-07 01:06:31,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:06:31,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-11-07 01:06:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:31,714 INFO L225 Difference]: With dead ends: 13710 [2019-11-07 01:06:31,715 INFO L226 Difference]: Without dead ends: 7194 [2019-11-07 01:06:31,726 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 01:06:31,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7194 states. [2019-11-07 01:06:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7194 to 5653. [2019-11-07 01:06:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5653 states. [2019-11-07 01:06:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 8055 transitions. [2019-11-07 01:06:32,415 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 8055 transitions. Word has length 59 [2019-11-07 01:06:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:06:32,416 INFO L462 AbstractCegarLoop]: Abstraction has 5653 states and 8055 transitions. [2019-11-07 01:06:32,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:06:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 8055 transitions. [2019-11-07 01:06:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-07 01:06:32,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:06:32,424 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 01:06:32,425 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:06:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:06:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1119557590, now seen corresponding path program 1 times [2019-11-07 01:06:32,426 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:06:32,426 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9576721] [2019-11-07 01:06:32,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:06:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:06:32,547 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 01:06:32,548 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9576721] [2019-11-07 01:06:32,548 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:06:32,548 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:06:32,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836568127] [2019-11-07 01:06:32,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:06:32,549 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:06:32,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:06:32,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:06:32,549 INFO L87 Difference]: Start difference. First operand 5653 states and 8055 transitions. Second operand 3 states. [2019-11-07 01:06:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:06:33,458 INFO L93 Difference]: Finished difference Result 13247 states and 19432 transitions. [2019-11-07 01:06:33,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:06:33,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-11-07 01:06:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:06:33,471 INFO L225 Difference]: With dead ends: 13247 [2019-11-07 01:06:33,471 INFO L226 Difference]: Without dead ends: 8449 [2019-11-07 01:06:33,480 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 01:06:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8449 states.