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 -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:45:24,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:45:24,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:45:24,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:45:24,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:45:24,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:45:24,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:45:24,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:45:24,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:45:24,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:45:24,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:45:24,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:45:24,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:45:24,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:45:24,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:45:24,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:45:24,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:45:24,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:45:24,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:45:24,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:45:24,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:45:24,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:45:24,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:45:25,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:45:25,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:45:25,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:45:25,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:45:25,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:45:25,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:45:25,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:45:25,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:45:25,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:45:25,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:45:25,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:45:25,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:45:25,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:45:25,012 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 [2019-10-14 23:45:25,032 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:45:25,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:45:25,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:45:25,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:45:25,034 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:45:25,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:45:25,034 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:45:25,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:45:25,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:45:25,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:45:25,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:45:25,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:45:25,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:45:25,036 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:45:25,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:45:25,037 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:45:25,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:45:25,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:45:25,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:45:25,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:45:25,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:45:25,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:45:25,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:45:25,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:45:25,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:45:25,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:45:25,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:45:25,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:45:25,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:45:25,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:45:25,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:45:25,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:45:25,341 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:45:25,342 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:45:25,342 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-14 23:45:25,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8193de1a2/bb6f49df96c649e4a552ec1098fcd530/FLAGec39db51d [2019-10-14 23:45:25,951 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:45:25,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-14 23:45:25,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8193de1a2/bb6f49df96c649e4a552ec1098fcd530/FLAGec39db51d [2019-10-14 23:45:26,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8193de1a2/bb6f49df96c649e4a552ec1098fcd530 [2019-10-14 23:45:26,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:45:26,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:45:26,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:45:26,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:45:26,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:45:26,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:45:26" (1/1) ... [2019-10-14 23:45:26,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af50852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:26, skipping insertion in model container [2019-10-14 23:45:26,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:45:26" (1/1) ... [2019-10-14 23:45:26,253 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:45:26,308 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:45:26,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:45:26,882 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:45:27,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:45:27,061 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:45:27,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27 WrapperNode [2019-10-14 23:45:27,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:45:27,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:45:27,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:45:27,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:45:27,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (1/1) ... [2019-10-14 23:45:27,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (1/1) ... [2019-10-14 23:45:27,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (1/1) ... [2019-10-14 23:45:27,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (1/1) ... [2019-10-14 23:45:27,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (1/1) ... [2019-10-14 23:45:27,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (1/1) ... [2019-10-14 23:45:27,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (1/1) ... [2019-10-14 23:45:27,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:45:27,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:45:27,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:45:27,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:45:27,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (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 [2019-10-14 23:45:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:45:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:45:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:45:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:45:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:45:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-14 23:45:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:45:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:45:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:45:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:45:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:45:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:45:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:45:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:45:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:45:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:45:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:45:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:45:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:45:28,798 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:45:28,799 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:45:28,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:45:28 BoogieIcfgContainer [2019-10-14 23:45:28,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:45:28,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:45:28,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:45:28,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:45:28,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:45:26" (1/3) ... [2019-10-14 23:45:28,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcf3960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:45:28, skipping insertion in model container [2019-10-14 23:45:28,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:27" (2/3) ... [2019-10-14 23:45:28,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcf3960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:45:28, skipping insertion in model container [2019-10-14 23:45:28,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:45:28" (3/3) ... [2019-10-14 23:45:28,809 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-14 23:45:28,819 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:45:28,828 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:45:28,839 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:45:28,869 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:45:28,870 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:45:28,870 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:45:28,870 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:45:28,870 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:45:28,871 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:45:28,871 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:45:28,871 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:45:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2019-10-14 23:45:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-14 23:45:28,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:28,918 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:28,920 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:28,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1155837260, now seen corresponding path program 1 times [2019-10-14 23:45:28,935 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:28,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147562428] [2019-10-14 23:45:28,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:28,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:28,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:29,978 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:30,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147562428] [2019-10-14 23:45:30,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:30,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:30,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114213186] [2019-10-14 23:45:30,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:30,103 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:30,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:30,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:30,123 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 4 states. [2019-10-14 23:45:30,468 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-10-14 23:45:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:32,373 INFO L93 Difference]: Finished difference Result 647 states and 1119 transitions. [2019-10-14 23:45:32,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:32,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2019-10-14 23:45:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:32,402 INFO L225 Difference]: With dead ends: 647 [2019-10-14 23:45:32,402 INFO L226 Difference]: Without dead ends: 527 [2019-10-14 23:45:32,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-14 23:45:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 525. [2019-10-14 23:45:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2019-10-14 23:45:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 780 transitions. [2019-10-14 23:45:32,540 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 780 transitions. Word has length 156 [2019-10-14 23:45:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:32,543 INFO L462 AbstractCegarLoop]: Abstraction has 525 states and 780 transitions. [2019-10-14 23:45:32,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 780 transitions. [2019-10-14 23:45:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-14 23:45:32,555 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:32,556 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:32,557 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:32,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:32,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1353690447, now seen corresponding path program 1 times [2019-10-14 23:45:32,558 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:32,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906101377] [2019-10-14 23:45:32,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:32,559 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:32,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:33,316 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:33,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906101377] [2019-10-14 23:45:33,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:33,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:33,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333787329] [2019-10-14 23:45:33,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:33,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:33,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:33,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:33,373 INFO L87 Difference]: Start difference. First operand 525 states and 780 transitions. Second operand 5 states. [2019-10-14 23:45:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:35,991 INFO L93 Difference]: Finished difference Result 1532 states and 2273 transitions. [2019-10-14 23:45:35,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:35,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-14 23:45:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:36,000 INFO L225 Difference]: With dead ends: 1532 [2019-10-14 23:45:36,000 INFO L226 Difference]: Without dead ends: 1020 [2019-10-14 23:45:36,005 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:45:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2019-10-14 23:45:36,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1018. [2019-10-14 23:45:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2019-10-14 23:45:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1501 transitions. [2019-10-14 23:45:36,063 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1501 transitions. Word has length 156 [2019-10-14 23:45:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:36,064 INFO L462 AbstractCegarLoop]: Abstraction has 1018 states and 1501 transitions. [2019-10-14 23:45:36,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1501 transitions. [2019-10-14 23:45:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-14 23:45:36,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:36,068 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:36,069 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:36,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:36,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1552789903, now seen corresponding path program 1 times [2019-10-14 23:45:36,070 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:36,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142080248] [2019-10-14 23:45:36,070 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:36,070 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:36,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:36,426 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:36,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142080248] [2019-10-14 23:45:36,486 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:36,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:36,486 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031899329] [2019-10-14 23:45:36,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:36,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:36,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:36,489 INFO L87 Difference]: Start difference. First operand 1018 states and 1501 transitions. Second operand 4 states. [2019-10-14 23:45:39,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:39,323 INFO L93 Difference]: Finished difference Result 3008 states and 4433 transitions. [2019-10-14 23:45:39,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:39,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2019-10-14 23:45:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:39,339 INFO L225 Difference]: With dead ends: 3008 [2019-10-14 23:45:39,339 INFO L226 Difference]: Without dead ends: 2022 [2019-10-14 23:45:39,342 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2019-10-14 23:45:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1020. [2019-10-14 23:45:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2019-10-14 23:45:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1503 transitions. [2019-10-14 23:45:39,407 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1503 transitions. Word has length 157 [2019-10-14 23:45:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:39,407 INFO L462 AbstractCegarLoop]: Abstraction has 1020 states and 1503 transitions. [2019-10-14 23:45:39,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1503 transitions. [2019-10-14 23:45:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-14 23:45:39,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:39,411 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:39,411 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:39,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:39,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1516867775, now seen corresponding path program 1 times [2019-10-14 23:45:39,412 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:39,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993496216] [2019-10-14 23:45:39,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:39,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:39,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:39,796 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:39,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993496216] [2019-10-14 23:45:39,898 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:39,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:39,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741657725] [2019-10-14 23:45:39,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:39,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:39,901 INFO L87 Difference]: Start difference. First operand 1020 states and 1503 transitions. Second operand 4 states. [2019-10-14 23:45:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:42,586 INFO L93 Difference]: Finished difference Result 2789 states and 4120 transitions. [2019-10-14 23:45:42,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:42,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-14 23:45:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:42,601 INFO L225 Difference]: With dead ends: 2789 [2019-10-14 23:45:42,601 INFO L226 Difference]: Without dead ends: 1966 [2019-10-14 23:45:42,605 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2019-10-14 23:45:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1964. [2019-10-14 23:45:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2019-10-14 23:45:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2867 transitions. [2019-10-14 23:45:42,714 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2867 transitions. Word has length 158 [2019-10-14 23:45:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:42,716 INFO L462 AbstractCegarLoop]: Abstraction has 1964 states and 2867 transitions. [2019-10-14 23:45:42,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2867 transitions. [2019-10-14 23:45:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-14 23:45:42,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:42,721 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:42,721 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:42,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2015367012, now seen corresponding path program 1 times [2019-10-14 23:45:42,722 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:42,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499678642] [2019-10-14 23:45:42,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:42,723 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:42,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:43,143 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:43,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499678642] [2019-10-14 23:45:43,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:43,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:43,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298229063] [2019-10-14 23:45:43,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:43,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:43,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:43,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:43,188 INFO L87 Difference]: Start difference. First operand 1964 states and 2867 transitions. Second operand 5 states. [2019-10-14 23:45:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:44,515 INFO L93 Difference]: Finished difference Result 3278 states and 4800 transitions. [2019-10-14 23:45:44,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:44,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-14 23:45:44,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:44,523 INFO L225 Difference]: With dead ends: 3278 [2019-10-14 23:45:44,523 INFO L226 Difference]: Without dead ends: 1499 [2019-10-14 23:45:44,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:45:44,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2019-10-14 23:45:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1499. [2019-10-14 23:45:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2019-10-14 23:45:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2182 transitions. [2019-10-14 23:45:44,589 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2182 transitions. Word has length 158 [2019-10-14 23:45:44,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:44,590 INFO L462 AbstractCegarLoop]: Abstraction has 1499 states and 2182 transitions. [2019-10-14 23:45:44,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:44,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2182 transitions. [2019-10-14 23:45:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-14 23:45:44,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:44,594 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:44,594 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:44,595 INFO L82 PathProgramCache]: Analyzing trace with hash -528962491, now seen corresponding path program 1 times [2019-10-14 23:45:44,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:44,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145476007] [2019-10-14 23:45:44,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:44,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:44,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:44,873 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:44,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145476007] [2019-10-14 23:45:44,908 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:44,908 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:44,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342804597] [2019-10-14 23:45:44,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:44,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:44,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:44,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:44,920 INFO L87 Difference]: Start difference. First operand 1499 states and 2182 transitions. Second operand 4 states. [2019-10-14 23:45:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:46,623 INFO L93 Difference]: Finished difference Result 3290 states and 4921 transitions. [2019-10-14 23:45:46,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:46,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2019-10-14 23:45:46,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:46,634 INFO L225 Difference]: With dead ends: 3290 [2019-10-14 23:45:46,634 INFO L226 Difference]: Without dead ends: 1977 [2019-10-14 23:45:46,638 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:46,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2019-10-14 23:45:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1933. [2019-10-14 23:45:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1933 states. [2019-10-14 23:45:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2888 transitions. [2019-10-14 23:45:46,717 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2888 transitions. Word has length 159 [2019-10-14 23:45:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:46,718 INFO L462 AbstractCegarLoop]: Abstraction has 1933 states and 2888 transitions. [2019-10-14 23:45:46,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2888 transitions. [2019-10-14 23:45:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-14 23:45:46,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:46,722 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:46,723 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:46,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:46,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1484207381, now seen corresponding path program 1 times [2019-10-14 23:45:46,723 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:46,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616379322] [2019-10-14 23:45:46,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:46,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:46,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:47,023 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:47,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616379322] [2019-10-14 23:45:47,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:47,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:47,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739454314] [2019-10-14 23:45:47,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:47,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:47,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:47,091 INFO L87 Difference]: Start difference. First operand 1933 states and 2888 transitions. Second operand 4 states. [2019-10-14 23:45:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:48,968 INFO L93 Difference]: Finished difference Result 4690 states and 7155 transitions. [2019-10-14 23:45:48,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:48,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-10-14 23:45:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:48,983 INFO L225 Difference]: With dead ends: 4690 [2019-10-14 23:45:48,983 INFO L226 Difference]: Without dead ends: 3027 [2019-10-14 23:45:48,988 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2019-10-14 23:45:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 2711. [2019-10-14 23:45:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2019-10-14 23:45:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4151 transitions. [2019-10-14 23:45:49,106 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 4151 transitions. Word has length 162 [2019-10-14 23:45:49,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:49,106 INFO L462 AbstractCegarLoop]: Abstraction has 2711 states and 4151 transitions. [2019-10-14 23:45:49,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 4151 transitions. [2019-10-14 23:45:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-14 23:45:49,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:49,110 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:49,110 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:49,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:49,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2071220188, now seen corresponding path program 1 times [2019-10-14 23:45:49,111 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:49,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317571200] [2019-10-14 23:45:49,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:49,112 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:49,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:49,624 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:49,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317571200] [2019-10-14 23:45:49,719 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:49,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:45:49,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421254856] [2019-10-14 23:45:49,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:45:49,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:49,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:45:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:45:49,721 INFO L87 Difference]: Start difference. First operand 2711 states and 4151 transitions. Second operand 10 states. [2019-10-14 23:45:50,055 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:45:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:52,147 INFO L93 Difference]: Finished difference Result 9554 states and 14922 transitions. [2019-10-14 23:45:52,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:45:52,148 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2019-10-14 23:45:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:52,182 INFO L225 Difference]: With dead ends: 9554 [2019-10-14 23:45:52,182 INFO L226 Difference]: Without dead ends: 7023 [2019-10-14 23:45:52,191 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:45:52,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7023 states. [2019-10-14 23:45:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7023 to 5089. [2019-10-14 23:45:52,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5089 states. [2019-10-14 23:45:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 7829 transitions. [2019-10-14 23:45:52,451 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 7829 transitions. Word has length 162 [2019-10-14 23:45:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:52,451 INFO L462 AbstractCegarLoop]: Abstraction has 5089 states and 7829 transitions. [2019-10-14 23:45:52,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:45:52,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 7829 transitions. [2019-10-14 23:45:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-14 23:45:52,456 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:52,457 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:52,457 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:52,457 INFO L82 PathProgramCache]: Analyzing trace with hash 430958199, now seen corresponding path program 1 times [2019-10-14 23:45:52,457 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:52,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810859826] [2019-10-14 23:45:52,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:52,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:52,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:52,868 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:52,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810859826] [2019-10-14 23:45:52,938 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:52,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:52,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684682968] [2019-10-14 23:45:52,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:52,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:52,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:52,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:52,942 INFO L87 Difference]: Start difference. First operand 5089 states and 7829 transitions. Second operand 5 states. [2019-10-14 23:45:53,174 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-10-14 23:45:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:54,683 INFO L93 Difference]: Finished difference Result 13547 states and 21235 transitions. [2019-10-14 23:45:54,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:45:54,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2019-10-14 23:45:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:54,720 INFO L225 Difference]: With dead ends: 13547 [2019-10-14 23:45:54,721 INFO L226 Difference]: Without dead ends: 9797 [2019-10-14 23:45:54,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:45:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9797 states. [2019-10-14 23:45:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9797 to 9795. [2019-10-14 23:45:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2019-10-14 23:45:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 15103 transitions. [2019-10-14 23:45:55,127 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 15103 transitions. Word has length 162 [2019-10-14 23:45:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:55,127 INFO L462 AbstractCegarLoop]: Abstraction has 9795 states and 15103 transitions. [2019-10-14 23:45:55,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 15103 transitions. [2019-10-14 23:45:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-14 23:45:55,135 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:55,135 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:55,135 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:55,136 INFO L82 PathProgramCache]: Analyzing trace with hash 169281566, now seen corresponding path program 1 times [2019-10-14 23:45:55,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:55,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098207678] [2019-10-14 23:45:55,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:55,137 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:55,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:55,587 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:45:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:55,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098207678] [2019-10-14 23:45:55,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:55,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:55,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733781597] [2019-10-14 23:45:55,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:55,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:55,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:55,636 INFO L87 Difference]: Start difference. First operand 9795 states and 15103 transitions. Second operand 5 states. [2019-10-14 23:45:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:58,227 INFO L93 Difference]: Finished difference Result 25746 states and 39693 transitions. [2019-10-14 23:45:58,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:58,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2019-10-14 23:45:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:58,266 INFO L225 Difference]: With dead ends: 25746 [2019-10-14 23:45:58,266 INFO L226 Difference]: Without dead ends: 15974 [2019-10-14 23:45:58,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:45:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15974 states. [2019-10-14 23:45:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15974 to 15972. [2019-10-14 23:45:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15972 states. [2019-10-14 23:45:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15972 states to 15972 states and 24436 transitions. [2019-10-14 23:45:59,054 INFO L78 Accepts]: Start accepts. Automaton has 15972 states and 24436 transitions. Word has length 162 [2019-10-14 23:45:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:59,055 INFO L462 AbstractCegarLoop]: Abstraction has 15972 states and 24436 transitions. [2019-10-14 23:45:59,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 15972 states and 24436 transitions. [2019-10-14 23:45:59,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-14 23:45:59,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:59,064 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:45:59,064 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:59,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:59,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1075293888, now seen corresponding path program 1 times [2019-10-14 23:45:59,065 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:59,065 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130735795] [2019-10-14 23:45:59,065 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:59,066 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:59,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat