/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:09:11,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:09:11,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:09:11,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:09:11,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:09:11,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:09:11,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:09:11,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:09:11,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:09:11,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:09:11,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:09:11,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:09:11,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:09:11,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:09:11,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:09:11,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:09:11,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:09:11,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:09:11,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:09:11,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:09:11,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:09:11,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:09:11,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:09:11,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:09:12,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:09:12,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:09:12,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:09:12,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:09:12,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:09:12,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 01:09:12,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:09:12,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:09:12,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:09:12,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:09:12,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:09:12,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:09:12,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:09:12,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:09:12,062 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:09:12,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:09:12,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:09:12,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:09:12,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:09:12,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:09:12,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:09:12,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:09:12,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:09:12,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:09:12,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:09:12,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:09:12,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:09:12,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:09:12,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:09:12,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:09:12,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:09:12,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:12,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:09:12,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:09:12,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:09:12,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:09:12,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:09:12,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:09:12,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:09:12,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:09:12,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:09:12,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:09:12,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:09:12,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:09:12,430 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:09:12,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-19 01:09:12,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00adf9d44/9608d005ba464fe88f4cffc7502d54a4/FLAGb01f0ef7d [2020-08-19 01:09:13,055 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:09:13,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-19 01:09:13,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00adf9d44/9608d005ba464fe88f4cffc7502d54a4/FLAGb01f0ef7d [2020-08-19 01:09:13,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00adf9d44/9608d005ba464fe88f4cffc7502d54a4 [2020-08-19 01:09:13,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:09:13,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:09:13,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:13,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:09:13,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:09:13,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:13" (1/1) ... [2020-08-19 01:09:13,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6fb2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:13, skipping insertion in model container [2020-08-19 01:09:13,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:13" (1/1) ... [2020-08-19 01:09:13,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:09:13,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:09:13,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:13,934 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:09:14,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:14,080 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:09:14,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14 WrapperNode [2020-08-19 01:09:14,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:14,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:09:14,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:09:14,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:09:14,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (1/1) ... [2020-08-19 01:09:14,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (1/1) ... [2020-08-19 01:09:14,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (1/1) ... [2020-08-19 01:09:14,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (1/1) ... [2020-08-19 01:09:14,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (1/1) ... [2020-08-19 01:09:14,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (1/1) ... [2020-08-19 01:09:14,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (1/1) ... [2020-08-19 01:09:14,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:09:14,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:09:14,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:09:14,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:09:14,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 01:09:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:09:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:09:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-19 01:09:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:09:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:09:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 01:09:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:09:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 01:09:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 01:09:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-19 01:09:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:09:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:09:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:09:14,452 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 01:09:14,984 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-19 01:09:14,984 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-19 01:09:15,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:09:15,001 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 01:09:15,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:15 BoogieIcfgContainer [2020-08-19 01:09:15,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:09:15,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:09:15,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:09:15,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:09:15,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:09:13" (1/3) ... [2020-08-19 01:09:15,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5148d3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:15, skipping insertion in model container [2020-08-19 01:09:15,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:14" (2/3) ... [2020-08-19 01:09:15,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5148d3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:15, skipping insertion in model container [2020-08-19 01:09:15,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:15" (3/3) ... [2020-08-19 01:09:15,023 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-19 01:09:15,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:09:15,046 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:09:15,060 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:09:15,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:09:15,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:09:15,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:09:15,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:09:15,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:09:15,090 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:09:15,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:09:15,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:09:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 01:09:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 01:09:15,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:15,123 INFO L422 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] [2020-08-19 01:09:15,124 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:15,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-19 01:09:15,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:15,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927729325] [2020-08-19 01:09:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:15,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927729325] [2020-08-19 01:09:15,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:15,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:15,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720839157] [2020-08-19 01:09:15,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:15,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:15,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:15,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:15,561 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-19 01:09:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:15,931 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-19 01:09:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:15,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-19 01:09:15,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:15,949 INFO L225 Difference]: With dead ends: 362 [2020-08-19 01:09:15,950 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 01:09:15,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 01:09:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-19 01:09:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-19 01:09:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-19 01:09:16,021 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-19 01:09:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:16,021 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-19 01:09:16,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-19 01:09:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 01:09:16,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:16,024 INFO L422 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] [2020-08-19 01:09:16,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:09:16,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:16,025 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-19 01:09:16,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:16,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757528902] [2020-08-19 01:09:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:16,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757528902] [2020-08-19 01:09:16,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:16,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:16,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7342219] [2020-08-19 01:09:16,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:16,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:16,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:16,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:16,156 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-19 01:09:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:16,372 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-19 01:09:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:16,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 01:09:16,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:16,376 INFO L225 Difference]: With dead ends: 363 [2020-08-19 01:09:16,376 INFO L226 Difference]: Without dead ends: 199 [2020-08-19 01:09:16,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-19 01:09:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-19 01:09:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-19 01:09:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-19 01:09:16,397 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-19 01:09:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:16,398 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-19 01:09:16,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-19 01:09:16,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 01:09:16,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:16,400 INFO L422 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] [2020-08-19 01:09:16,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:09:16,400 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:16,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:16,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-19 01:09:16,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:16,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005811039] [2020-08-19 01:09:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:16,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005811039] [2020-08-19 01:09:16,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:16,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:16,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047780250] [2020-08-19 01:09:16,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:16,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:16,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:16,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:16,477 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-19 01:09:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:16,735 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-19 01:09:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:16,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 01:09:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:16,737 INFO L225 Difference]: With dead ends: 393 [2020-08-19 01:09:16,738 INFO L226 Difference]: Without dead ends: 207 [2020-08-19 01:09:16,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-19 01:09:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-19 01:09:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 01:09:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-19 01:09:16,764 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-19 01:09:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:16,764 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-19 01:09:16,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-19 01:09:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 01:09:16,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:16,766 INFO L422 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] [2020-08-19 01:09:16,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:09:16,767 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:16,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:16,767 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-19 01:09:16,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:16,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226296766] [2020-08-19 01:09:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:16,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226296766] [2020-08-19 01:09:16,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:16,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:16,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044787680] [2020-08-19 01:09:16,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:16,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:16,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:16,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:16,883 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-19 01:09:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:17,101 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-19 01:09:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:17,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 01:09:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:17,105 INFO L225 Difference]: With dead ends: 398 [2020-08-19 01:09:17,105 INFO L226 Difference]: Without dead ends: 206 [2020-08-19 01:09:17,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:17,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-19 01:09:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-19 01:09:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 01:09:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-19 01:09:17,137 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-19 01:09:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:17,137 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-19 01:09:17,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:17,137 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-19 01:09:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-19 01:09:17,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:17,139 INFO L422 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] [2020-08-19 01:09:17,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:09:17,140 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-19 01:09:17,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:17,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988123322] [2020-08-19 01:09:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:17,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988123322] [2020-08-19 01:09:17,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:17,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:17,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768406687] [2020-08-19 01:09:17,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:17,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:17,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:17,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:17,251 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-19 01:09:17,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:17,446 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-19 01:09:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:17,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-19 01:09:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:17,448 INFO L225 Difference]: With dead ends: 409 [2020-08-19 01:09:17,448 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 01:09:17,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 01:09:17,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 01:09:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 01:09:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-19 01:09:17,464 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-19 01:09:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:17,464 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-19 01:09:17,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-19 01:09:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 01:09:17,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:17,466 INFO L422 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] [2020-08-19 01:09:17,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:09:17,467 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-19 01:09:17,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:17,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440631147] [2020-08-19 01:09:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:17,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:17,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440631147] [2020-08-19 01:09:17,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:17,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:17,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757221039] [2020-08-19 01:09:17,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:17,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:17,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:17,531 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-19 01:09:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:17,753 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-19 01:09:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:17,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-19 01:09:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:17,756 INFO L225 Difference]: With dead ends: 409 [2020-08-19 01:09:17,756 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 01:09:17,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 01:09:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 01:09:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 01:09:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-19 01:09:17,778 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-19 01:09:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:17,778 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-19 01:09:17,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-19 01:09:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 01:09:17,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:17,783 INFO L422 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] [2020-08-19 01:09:17,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:09:17,783 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:17,784 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-19 01:09:17,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:17,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51386552] [2020-08-19 01:09:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:17,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51386552] [2020-08-19 01:09:17,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:17,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:17,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223512459] [2020-08-19 01:09:17,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:17,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:17,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:17,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:17,855 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-19 01:09:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:18,043 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-19 01:09:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:18,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-19 01:09:18,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:18,045 INFO L225 Difference]: With dead ends: 409 [2020-08-19 01:09:18,045 INFO L226 Difference]: Without dead ends: 216 [2020-08-19 01:09:18,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:18,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-19 01:09:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-19 01:09:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 01:09:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-19 01:09:18,059 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-19 01:09:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:18,060 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-19 01:09:18,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-19 01:09:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 01:09:18,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:18,062 INFO L422 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] [2020-08-19 01:09:18,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:09:18,063 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:18,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-19 01:09:18,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:18,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521087509] [2020-08-19 01:09:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:18,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521087509] [2020-08-19 01:09:18,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:18,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:09:18,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894555507] [2020-08-19 01:09:18,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:09:18,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:18,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:09:18,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:18,162 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-19 01:09:18,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:18,533 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-19 01:09:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:09:18,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-19 01:09:18,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:18,537 INFO L225 Difference]: With dead ends: 605 [2020-08-19 01:09:18,537 INFO L226 Difference]: Without dead ends: 412 [2020-08-19 01:09:18,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:09:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-19 01:09:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-19 01:09:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-19 01:09:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-19 01:09:18,563 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-19 01:09:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:18,563 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-19 01:09:18,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:09:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-19 01:09:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-19 01:09:18,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:18,565 INFO L422 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] [2020-08-19 01:09:18,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:09:18,566 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:18,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:18,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-19 01:09:18,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:18,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214746577] [2020-08-19 01:09:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:18,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214746577] [2020-08-19 01:09:18,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:18,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:18,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210697362] [2020-08-19 01:09:18,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:18,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:18,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:18,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:18,625 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-19 01:09:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:18,880 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-19 01:09:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:18,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-19 01:09:18,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:18,884 INFO L225 Difference]: With dead ends: 847 [2020-08-19 01:09:18,884 INFO L226 Difference]: Without dead ends: 472 [2020-08-19 01:09:18,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:18,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-19 01:09:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-19 01:09:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-19 01:09:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-19 01:09:18,912 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-19 01:09:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:18,913 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-19 01:09:18,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-19 01:09:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-19 01:09:18,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:18,914 INFO L422 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] [2020-08-19 01:09:18,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:09:18,915 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:18,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-19 01:09:18,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:18,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762316594] [2020-08-19 01:09:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:18,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762316594] [2020-08-19 01:09:18,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:18,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:18,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760784024] [2020-08-19 01:09:18,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:18,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:18,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:18,978 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-19 01:09:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:19,238 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-19 01:09:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:19,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-19 01:09:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:19,243 INFO L225 Difference]: With dead ends: 936 [2020-08-19 01:09:19,243 INFO L226 Difference]: Without dead ends: 495 [2020-08-19 01:09:19,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-19 01:09:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-19 01:09:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-19 01:09:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-19 01:09:19,278 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-19 01:09:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:19,278 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-19 01:09:19,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-19 01:09:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:09:19,280 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:19,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:19,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:09:19,281 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:19,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:19,282 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-19 01:09:19,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:19,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999184646] [2020-08-19 01:09:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 01:09:19,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999184646] [2020-08-19 01:09:19,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:19,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:19,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358394399] [2020-08-19 01:09:19,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:19,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:19,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:19,385 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-19 01:09:19,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:19,624 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-19 01:09:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:19,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-19 01:09:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:19,630 INFO L225 Difference]: With dead ends: 993 [2020-08-19 01:09:19,630 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 01:09:19,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 01:09:19,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-19 01:09:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 01:09:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-19 01:09:19,657 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-19 01:09:19,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:19,657 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-19 01:09:19,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-19 01:09:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 01:09:19,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:19,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:19,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:09:19,660 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:19,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:19,660 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-19 01:09:19,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:19,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522389387] [2020-08-19 01:09:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 01:09:19,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522389387] [2020-08-19 01:09:19,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:19,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:19,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984367036] [2020-08-19 01:09:19,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:19,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:19,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:19,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:19,722 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-19 01:09:19,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:19,945 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-19 01:09:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:19,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-19 01:09:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:19,949 INFO L225 Difference]: With dead ends: 1027 [2020-08-19 01:09:19,949 INFO L226 Difference]: Without dead ends: 529 [2020-08-19 01:09:19,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-19 01:09:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-19 01:09:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 01:09:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-19 01:09:19,980 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-19 01:09:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:19,980 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-19 01:09:19,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-19 01:09:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 01:09:19,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:19,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:19,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:09:19,982 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:19,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-19 01:09:19,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:19,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792583116] [2020-08-19 01:09:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 01:09:20,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792583116] [2020-08-19 01:09:20,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:20,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:20,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546314032] [2020-08-19 01:09:20,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:20,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:20,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:20,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:20,044 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-19 01:09:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:20,319 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-19 01:09:20,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:20,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-19 01:09:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:20,323 INFO L225 Difference]: With dead ends: 1074 [2020-08-19 01:09:20,323 INFO L226 Difference]: Without dead ends: 576 [2020-08-19 01:09:20,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-19 01:09:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-19 01:09:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-19 01:09:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-19 01:09:20,358 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-19 01:09:20,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:20,360 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-19 01:09:20,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:20,360 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-19 01:09:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 01:09:20,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:20,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:20,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:09:20,362 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:20,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:20,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-19 01:09:20,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:20,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239940767] [2020-08-19 01:09:20,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:20,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239940767] [2020-08-19 01:09:20,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:20,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:20,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302923631] [2020-08-19 01:09:20,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:20,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:20,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:20,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:20,451 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-19 01:09:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:20,715 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-19 01:09:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:20,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-19 01:09:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:20,720 INFO L225 Difference]: With dead ends: 1184 [2020-08-19 01:09:20,720 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 01:09:20,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 01:09:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-19 01:09:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 01:09:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-19 01:09:20,762 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-19 01:09:20,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:20,762 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-19 01:09:20,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-19 01:09:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-19 01:09:20,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:20,767 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:20,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:09:20,767 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-19 01:09:20,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:20,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171844678] [2020-08-19 01:09:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:20,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171844678] [2020-08-19 01:09:20,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:20,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:20,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786201880] [2020-08-19 01:09:20,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:20,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:20,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:20,835 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-19 01:09:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:21,181 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-19 01:09:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:21,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-19 01:09:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:21,186 INFO L225 Difference]: With dead ends: 1227 [2020-08-19 01:09:21,187 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 01:09:21,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 01:09:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-19 01:09:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 01:09:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-19 01:09:21,237 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-19 01:09:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:21,238 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-19 01:09:21,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-19 01:09:21,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 01:09:21,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:21,241 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:21,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 01:09:21,242 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:21,243 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-19 01:09:21,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:21,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761060510] [2020-08-19 01:09:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:21,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 01:09:21,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761060510] [2020-08-19 01:09:21,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:21,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:21,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069657588] [2020-08-19 01:09:21,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:21,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:21,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:21,351 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-19 01:09:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:21,667 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-19 01:09:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:21,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-19 01:09:21,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:21,673 INFO L225 Difference]: With dead ends: 1223 [2020-08-19 01:09:21,674 INFO L226 Difference]: Without dead ends: 619 [2020-08-19 01:09:21,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-19 01:09:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-19 01:09:21,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-19 01:09:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-19 01:09:21,725 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-19 01:09:21,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:21,725 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-19 01:09:21,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-19 01:09:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 01:09:21,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:21,729 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:21,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 01:09:21,730 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:21,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:21,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-19 01:09:21,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:21,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047336957] [2020-08-19 01:09:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 01:09:21,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047336957] [2020-08-19 01:09:21,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:21,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:21,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814049102] [2020-08-19 01:09:21,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:21,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:21,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:21,825 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-19 01:09:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,143 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-19 01:09:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:22,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-19 01:09:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,149 INFO L225 Difference]: With dead ends: 1281 [2020-08-19 01:09:22,150 INFO L226 Difference]: Without dead ends: 677 [2020-08-19 01:09:22,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-19 01:09:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-19 01:09:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 01:09:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-19 01:09:22,218 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-19 01:09:22,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,218 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-19 01:09:22,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-19 01:09:22,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 01:09:22,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 01:09:22,223 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,223 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-19 01:09:22,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852857996] [2020-08-19 01:09:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 01:09:22,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852857996] [2020-08-19 01:09:22,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:22,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708894993] [2020-08-19 01:09:22,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:22,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:22,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:22,352 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-19 01:09:22,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,629 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-19 01:09:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:22,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-19 01:09:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,635 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 01:09:22,635 INFO L226 Difference]: Without dead ends: 677 [2020-08-19 01:09:22,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-19 01:09:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-19 01:09:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 01:09:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-19 01:09:22,677 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-19 01:09:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,677 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-19 01:09:22,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:22,677 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-19 01:09:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-19 01:09:22,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 01:09:22,681 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-19 01:09:22,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366448224] [2020-08-19 01:09:22,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 01:09:22,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366448224] [2020-08-19 01:09:22,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:22,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115173665] [2020-08-19 01:09:22,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:22,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:22,747 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-19 01:09:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:23,054 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-19 01:09:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:23,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-19 01:09:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:23,059 INFO L225 Difference]: With dead ends: 1349 [2020-08-19 01:09:23,059 INFO L226 Difference]: Without dead ends: 713 [2020-08-19 01:09:23,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-19 01:09:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-19 01:09:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-19 01:09:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-19 01:09:23,107 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-19 01:09:23,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:23,108 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-19 01:09:23,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-19 01:09:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-19 01:09:23,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:23,111 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:23,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 01:09:23,111 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:23,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-19 01:09:23,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:23,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971788948] [2020-08-19 01:09:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 01:09:23,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971788948] [2020-08-19 01:09:23,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:23,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:23,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399769883] [2020-08-19 01:09:23,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:23,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:23,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:23,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:23,183 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-19 01:09:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:23,512 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-19 01:09:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:23,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-19 01:09:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:23,517 INFO L225 Difference]: With dead ends: 1406 [2020-08-19 01:09:23,517 INFO L226 Difference]: Without dead ends: 714 [2020-08-19 01:09:23,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:23,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-19 01:09:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-19 01:09:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 01:09:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-19 01:09:23,566 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-19 01:09:23,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:23,566 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-19 01:09:23,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-19 01:09:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-19 01:09:23,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:23,568 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:23,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 01:09:23,569 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:23,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:23,569 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-19 01:09:23,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:23,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470172007] [2020-08-19 01:09:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 01:09:23,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470172007] [2020-08-19 01:09:23,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:23,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:23,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541789411] [2020-08-19 01:09:23,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:23,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:23,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:23,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:23,647 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-19 01:09:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:23,891 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-19 01:09:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:23,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-19 01:09:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:23,895 INFO L225 Difference]: With dead ends: 1438 [2020-08-19 01:09:23,896 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 01:09:23,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:23,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 01:09:23,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-19 01:09:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 01:09:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-19 01:09:23,938 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-19 01:09:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:23,939 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-19 01:09:23,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-19 01:09:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-19 01:09:23,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:23,941 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:23,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 01:09:23,941 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:23,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:23,942 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-19 01:09:23,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:23,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522173995] [2020-08-19 01:09:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 01:09:24,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522173995] [2020-08-19 01:09:24,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:24,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329106335] [2020-08-19 01:09:24,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:24,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:24,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:24,022 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-19 01:09:24,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,317 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-19 01:09:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:24,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-19 01:09:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,326 INFO L225 Difference]: With dead ends: 1479 [2020-08-19 01:09:24,326 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 01:09:24,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 01:09:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-19 01:09:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 01:09:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-19 01:09:24,406 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-19 01:09:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,407 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-19 01:09:24,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:24,407 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-19 01:09:24,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-19 01:09:24,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,415 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 01:09:24,416 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-19 01:09:24,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990583250] [2020-08-19 01:09:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 01:09:24,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990583250] [2020-08-19 01:09:24,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:24,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077485521] [2020-08-19 01:09:24,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:24,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:24,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:24,534 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-19 01:09:24,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,837 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-19 01:09:24,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:24,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-19 01:09:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,844 INFO L225 Difference]: With dead ends: 1515 [2020-08-19 01:09:24,844 INFO L226 Difference]: Without dead ends: 785 [2020-08-19 01:09:24,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-19 01:09:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-19 01:09:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-19 01:09:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-19 01:09:24,905 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-19 01:09:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,906 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-19 01:09:24,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-19 01:09:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-19 01:09:24,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,909 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 01:09:24,910 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,911 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-19 01:09:24,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312675507] [2020-08-19 01:09:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 01:09:25,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312675507] [2020-08-19 01:09:25,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:25,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269905119] [2020-08-19 01:09:25,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:25,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:25,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:25,039 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-19 01:09:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,271 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-19 01:09:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:25,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-19 01:09:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,277 INFO L225 Difference]: With dead ends: 1547 [2020-08-19 01:09:25,278 INFO L226 Difference]: Without dead ends: 785 [2020-08-19 01:09:25,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:25,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-19 01:09:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-19 01:09:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-19 01:09:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-19 01:09:25,328 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-19 01:09:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,329 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-19 01:09:25,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-19 01:09:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-19 01:09:25,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,331 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:25,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 01:09:25,332 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,333 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-19 01:09:25,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254313016] [2020-08-19 01:09:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-19 01:09:25,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254313016] [2020-08-19 01:09:25,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:25,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222804936] [2020-08-19 01:09:25,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:25,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:25,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:25,409 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-19 01:09:25,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,746 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-19 01:09:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:25,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-19 01:09:25,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,753 INFO L225 Difference]: With dead ends: 1573 [2020-08-19 01:09:25,754 INFO L226 Difference]: Without dead ends: 811 [2020-08-19 01:09:25,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:25,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-19 01:09:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-19 01:09:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-19 01:09:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-19 01:09:25,820 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-19 01:09:25,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,820 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-19 01:09:25,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-19 01:09:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 01:09:25,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,825 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:25,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-19 01:09:25,826 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-19 01:09:25,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45590553] [2020-08-19 01:09:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-19 01:09:25,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45590553] [2020-08-19 01:09:25,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:25,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479421260] [2020-08-19 01:09:25,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:25,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:25,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:25,925 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-19 01:09:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:26,237 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-19 01:09:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:26,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-19 01:09:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:26,244 INFO L225 Difference]: With dead ends: 1601 [2020-08-19 01:09:26,244 INFO L226 Difference]: Without dead ends: 811 [2020-08-19 01:09:26,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-19 01:09:26,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-19 01:09:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-19 01:09:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-19 01:09:26,311 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-19 01:09:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:26,312 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-19 01:09:26,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-19 01:09:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 01:09:26,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:26,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:26,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-19 01:09:26,318 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:26,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-19 01:09:26,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:26,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112406829] [2020-08-19 01:09:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 01:09:26,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112406829] [2020-08-19 01:09:26,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:26,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:26,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838090508] [2020-08-19 01:09:26,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:26,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:26,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:26,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:26,422 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-19 01:09:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:26,845 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-19 01:09:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:26,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-19 01:09:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:26,852 INFO L225 Difference]: With dead ends: 1656 [2020-08-19 01:09:26,852 INFO L226 Difference]: Without dead ends: 866 [2020-08-19 01:09:26,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-19 01:09:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-19 01:09:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-19 01:09:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-19 01:09:26,909 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-19 01:09:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:26,910 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-19 01:09:26,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:26,910 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-19 01:09:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 01:09:26,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:26,914 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:26,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-19 01:09:26,914 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-19 01:09:26,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:26,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643324586] [2020-08-19 01:09:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 01:09:26,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643324586] [2020-08-19 01:09:26,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:26,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:26,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996747501] [2020-08-19 01:09:26,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:26,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:26,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:26,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:26,988 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-19 01:09:27,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:27,254 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-19 01:09:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:27,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-19 01:09:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:27,259 INFO L225 Difference]: With dead ends: 1705 [2020-08-19 01:09:27,259 INFO L226 Difference]: Without dead ends: 850 [2020-08-19 01:09:27,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-19 01:09:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-19 01:09:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 01:09:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-19 01:09:27,309 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-19 01:09:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:27,309 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-19 01:09:27,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-19 01:09:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 01:09:27,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:27,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:27,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-19 01:09:27,312 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:27,313 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-19 01:09:27,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:27,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909584383] [2020-08-19 01:09:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-19 01:09:27,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909584383] [2020-08-19 01:09:27,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:27,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:27,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942344243] [2020-08-19 01:09:27,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:27,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:27,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:27,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:27,381 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-19 01:09:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:27,661 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-19 01:09:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:27,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-19 01:09:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:27,667 INFO L225 Difference]: With dead ends: 1671 [2020-08-19 01:09:27,667 INFO L226 Difference]: Without dead ends: 848 [2020-08-19 01:09:27,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-19 01:09:27,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-19 01:09:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 01:09:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-19 01:09:27,717 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-19 01:09:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:27,718 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-19 01:09:27,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-19 01:09:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 01:09:27,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:27,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:27,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-19 01:09:27,721 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:27,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-19 01:09:27,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:27,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089323755] [2020-08-19 01:09:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-19 01:09:27,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089323755] [2020-08-19 01:09:27,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:27,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:27,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746081229] [2020-08-19 01:09:27,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:27,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:27,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:27,815 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-19 01:09:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:28,129 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-19 01:09:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:28,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-19 01:09:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:28,136 INFO L225 Difference]: With dead ends: 1671 [2020-08-19 01:09:28,136 INFO L226 Difference]: Without dead ends: 831 [2020-08-19 01:09:28,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-19 01:09:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-19 01:09:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-19 01:09:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-19 01:09:28,202 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-19 01:09:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:28,202 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-19 01:09:28,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-19 01:09:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 01:09:28,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:28,207 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:28,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-19 01:09:28,207 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:28,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-19 01:09:28,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:28,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012876735] [2020-08-19 01:09:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:28,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-19 01:09:28,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012876735] [2020-08-19 01:09:28,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:28,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:28,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019847579] [2020-08-19 01:09:28,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:28,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:28,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:28,294 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-19 01:09:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:28,393 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-19 01:09:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:28,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-19 01:09:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:28,402 INFO L225 Difference]: With dead ends: 2417 [2020-08-19 01:09:28,402 INFO L226 Difference]: Without dead ends: 1611 [2020-08-19 01:09:28,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-19 01:09:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-19 01:09:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 01:09:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-19 01:09:28,463 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-19 01:09:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:28,464 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-19 01:09:28,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-19 01:09:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 01:09:28,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:28,467 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:28,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-19 01:09:28,467 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:28,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:28,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-19 01:09:28,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:28,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395166657] [2020-08-19 01:09:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:28,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-19 01:09:28,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395166657] [2020-08-19 01:09:28,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:28,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:28,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455121058] [2020-08-19 01:09:28,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:28,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:28,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:28,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:28,554 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-19 01:09:28,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:28,663 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-19 01:09:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:28,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-19 01:09:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:28,671 INFO L225 Difference]: With dead ends: 2416 [2020-08-19 01:09:28,671 INFO L226 Difference]: Without dead ends: 1608 [2020-08-19 01:09:28,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-19 01:09:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-19 01:09:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 01:09:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-19 01:09:28,792 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-19 01:09:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:28,792 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-19 01:09:28,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-19 01:09:28,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-19 01:09:28,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:28,795 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:28,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-19 01:09:28,795 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:28,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:28,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-19 01:09:28,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:28,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035354390] [2020-08-19 01:09:28,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-19 01:09:28,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035354390] [2020-08-19 01:09:28,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:28,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:28,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383396408] [2020-08-19 01:09:28,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:28,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:28,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:28,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:28,957 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-19 01:09:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:29,302 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-19 01:09:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:29,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-19 01:09:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:29,318 INFO L225 Difference]: With dead ends: 4752 [2020-08-19 01:09:29,318 INFO L226 Difference]: Without dead ends: 3159 [2020-08-19 01:09:29,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-19 01:09:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-19 01:09:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 01:09:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-19 01:09:29,536 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-19 01:09:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:29,537 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-19 01:09:29,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-19 01:09:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 01:09:29,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:29,540 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:29,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-19 01:09:29,541 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:29,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:29,541 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-19 01:09:29,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:29,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674155937] [2020-08-19 01:09:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-19 01:09:29,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674155937] [2020-08-19 01:09:29,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:29,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:29,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787500229] [2020-08-19 01:09:29,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:29,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:29,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:29,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:29,655 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-19 01:09:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:30,092 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-19 01:09:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:30,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-19 01:09:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:30,108 INFO L225 Difference]: With dead ends: 4792 [2020-08-19 01:09:30,108 INFO L226 Difference]: Without dead ends: 3199 [2020-08-19 01:09:30,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:30,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-19 01:09:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-19 01:09:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-19 01:09:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-19 01:09:30,320 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-19 01:09:30,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:30,321 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-19 01:09:30,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:30,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-19 01:09:30,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 01:09:30,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:30,325 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:30,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-19 01:09:30,325 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-19 01:09:30,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:30,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367855625] [2020-08-19 01:09:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:09:30,370 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:09:30,371 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:09:30,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-19 01:09:30,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:09:30 BoogieIcfgContainer [2020-08-19 01:09:30,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:09:30,433 INFO L168 Benchmark]: Toolchain (without parser) took 16960.38 ms. Allocated memory was 140.5 MB in the beginning and 498.6 MB in the end (delta: 358.1 MB). Free memory was 102.8 MB in the beginning and 299.4 MB in the end (delta: -196.6 MB). Peak memory consumption was 161.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:30,434 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:09:30,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.57 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 102.6 MB in the beginning and 176.0 MB in the end (delta: -73.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:30,435 INFO L168 Benchmark]: Boogie Preprocessor took 70.11 ms. Allocated memory is still 201.9 MB. Free memory was 176.0 MB in the beginning and 172.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:30,436 INFO L168 Benchmark]: RCFGBuilder took 858.29 ms. Allocated memory is still 201.9 MB. Free memory was 172.7 MB in the beginning and 115.5 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:30,436 INFO L168 Benchmark]: TraceAbstraction took 15416.92 ms. Allocated memory was 201.9 MB in the beginning and 498.6 MB in the end (delta: 296.7 MB). Free memory was 114.8 MB in the beginning and 299.4 MB in the end (delta: -184.6 MB). Peak memory consumption was 112.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:30,438 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 609.57 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 102.6 MB in the beginning and 176.0 MB in the end (delta: -73.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.11 ms. Allocated memory is still 201.9 MB. Free memory was 176.0 MB in the beginning and 172.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 858.29 ms. Allocated memory is still 201.9 MB. Free memory was 172.7 MB in the beginning and 115.5 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15416.92 ms. Allocated memory was 201.9 MB in the beginning and 498.6 MB in the end (delta: 296.7 MB). Free memory was 114.8 MB in the beginning and 299.4 MB in the end (delta: -184.6 MB). Peak memory consumption was 112.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L702] int s ; [L703] int tmp ; [L707] s = 8464 [L708] CALL ssl3_accept(s) [L12] int s__info_callback = __VERIFIER_nondet_int() ; [L13] int s__in_handshake = __VERIFIER_nondet_int() ; [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int() ; [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int() ; [L21] int s__rwstate ; [L22] int s__init_buf___0 = 1; [L23] int s__debug = __VERIFIER_nondet_int() ; [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int() ; [L26] int s__options = __VERIFIER_nondet_int() ; [L27] int s__verify_mode = __VERIFIER_nondet_int() ; [L28] int s__session__peer = __VERIFIER_nondet_int() ; [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L30] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message ; [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_cipher__algorithms ; [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength ; [L41] int s__session__cipher ; [L42] int buf ; [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp ; [L46] int cb ; [L47] long num1 = __VERIFIER_nondet_long() ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int() ; [L54] int tmp___2 = __VERIFIER_nondet_int() ; [L55] int tmp___3 = __VERIFIER_nondet_int() ; [L56] int tmp___4 = __VERIFIER_nondet_int() ; [L57] int tmp___5 = __VERIFIER_nondet_int() ; [L58] int tmp___6 = __VERIFIER_nondet_int() ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long() ; [L61] int tmp___9 = __VERIFIER_nondet_int() ; [L62] int tmp___10 = __VERIFIER_nondet_int() ; [L63] int blastFlag ; [L64] int __cil_tmp55 ; [L65] unsigned long __cil_tmp56 ; [L66] unsigned long __cil_tmp57 ; [L67] unsigned long __cil_tmp58 ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 = __VERIFIER_nondet_ulong() ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] __cil_tmp56 = 256345 [L307] skip = 1 [L318] s__state = 8528 [L319] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L323] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L324] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L326] __cil_tmp57 = (unsigned long )s__options [L327] COND TRUE __cil_tmp57 + 2097152UL [L328] s__s3__tmp__use_rsa_tmp = 1 [L333] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(blastFlag == 3) [L365] COND FALSE !(ret <= 0) [L382] s__state = 8544 [L383] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND TRUE s__state == 8544 [L387] COND TRUE s__verify_mode + 1 [L388] COND TRUE s__session__peer != 0 [L389] COND TRUE s__verify_mode + 4 [L390] s__verify_mode = 123 [L391] skip = 1 [L392] s__s3__tmp__cert_request = 0 [L393] s__state = 8560 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND FALSE !(! s__s3__tmp__reuse_message) [L686] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND TRUE s__state == 8560 [L437] ret = __VERIFIER_nondet_int() [L438] COND FALSE !(ret <= 0) [L441] s__s3__tmp__next_state___0 = 8576 [L442] s__state = 8448 [L443] s__init_num = 0 [L651] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L652] COND TRUE ! s__s3__tmp__reuse_message [L653] COND TRUE ! skip [L654] COND TRUE state == 8560 [L655] COND TRUE s__state == 8448 [L656] COND TRUE s__verify_mode != -1 [L657] COND TRUE s__verify_mode != -2 [L658] COND TRUE __cil_tmp61 != 9021 [L659] COND TRUE __cil_tmp58 != 4294967294 [L660] COND TRUE blastFlag != 4 [L661] COND TRUE tmp___7 != 1024 [L697] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.2s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7259 SDtfs, 16112 SDslu, 7753 SDs, 0 SdLazy, 4949 SolverSat, 1408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3197occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 3391 NumberOfCodeBlocks, 3391 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3195 ConstructedInterpolants, 0 QuantifiedInterpolants, 632376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 2752/2752 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...