/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=SHALLOWEST -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 [2020-08-18 20:18:26,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:18:26,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:18:26,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:18:26,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:18:26,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:18:26,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:18:26,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:18:26,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:18:26,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:18:26,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:18:26,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:18:26,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:18:26,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:18:26,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:18:26,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:18:26,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:18:26,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:18:26,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:18:26,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:18:26,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:18:26,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:18:26,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:18:26,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:18:26,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 20:18:26,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:18:26,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:18:26,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:18:26,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:18:26,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:18:26,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:18:26,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:18:26,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:18:26,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:18:26,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:18:26,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:18:26,181 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 [2020-08-18 20:18:26,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:18:26,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:18:26,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:18:26,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:18:26,219 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:18:26,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:18:26,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:18:26,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:18:26,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:18:26,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:18:26,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:18:26,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:18:26,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:18:26,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:18:26,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:18:26,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:18:26,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:18:26,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:18:26,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:18:26,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:18:26,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:18:26,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:18:26,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:18:26,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:18:26,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:18:26,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:18:26,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:18:26,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:18:26,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:18:26,225 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:18:26,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:18:26,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:18:26,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:18:26,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:18:26,557 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:18:26,558 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-18 20:18:26,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fe2064b5/cf3c277f6acb4f789855c91bb52337ed/FLAG52b385ab3 [2020-08-18 20:18:27,093 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:18:27,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-18 20:18:27,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fe2064b5/cf3c277f6acb4f789855c91bb52337ed/FLAG52b385ab3 [2020-08-18 20:18:27,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fe2064b5/cf3c277f6acb4f789855c91bb52337ed [2020-08-18 20:18:27,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:18:27,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:18:27,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:18:27,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:18:27,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:18:27,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:27,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768abc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27, skipping insertion in model container [2020-08-18 20:18:27,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:27,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:18:27,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:18:27,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:18:27,754 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:18:27,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:18:27,977 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:18:27,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27 WrapperNode [2020-08-18 20:18:27,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:18:27,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:18:27,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:18:27,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:18:27,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:27,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:28,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:28,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:28,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:28,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:28,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (1/1) ... [2020-08-18 20:18:28,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:18:28,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:18:28,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:18:28,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:18:28,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (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 [2020-08-18 20:18:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:18:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:18:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-18 20:18:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:18:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:18:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 20:18:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:18:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-18 20:18:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 20:18:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-18 20:18:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:18:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:18:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:18:28,376 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 20:18:28,858 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-18 20:18:28,859 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-18 20:18:28,869 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:18:28,870 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 20:18:28,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:18:28 BoogieIcfgContainer [2020-08-18 20:18:28,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:18:28,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:18:28,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:18:28,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:18:28,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:18:27" (1/3) ... [2020-08-18 20:18:28,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7662cc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:18:28, skipping insertion in model container [2020-08-18 20:18:28,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:27" (2/3) ... [2020-08-18 20:18:28,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7662cc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:18:28, skipping insertion in model container [2020-08-18 20:18:28,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:18:28" (3/3) ... [2020-08-18 20:18:28,883 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-18 20:18:28,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:18:28,901 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:18:28,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:18:28,940 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:18:28,940 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:18:28,940 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:18:28,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:18:28,941 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:18:28,941 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:18:28,941 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:18:28,941 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:18:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-18 20:18:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 20:18:28,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:28,974 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] [2020-08-18 20:18:28,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-18 20:18:28,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:28,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413553169] [2020-08-18 20:18:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:29,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413553169] [2020-08-18 20:18:29,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:29,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:29,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333125734] [2020-08-18 20:18:29,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:29,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:29,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:29,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:29,301 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-18 20:18:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:29,709 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-18 20:18:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:29,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-18 20:18:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:29,735 INFO L225 Difference]: With dead ends: 362 [2020-08-18 20:18:29,735 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 20:18:29,743 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 [2020-08-18 20:18:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 20:18:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-18 20:18:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-18 20:18:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-18 20:18:29,820 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-18 20:18:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:29,821 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-18 20:18:29,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-18 20:18:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 20:18:29,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:29,824 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] [2020-08-18 20:18:29,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:18:29,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:29,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:29,825 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-18 20:18:29,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:29,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774821013] [2020-08-18 20:18:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:29,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774821013] [2020-08-18 20:18:29,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:29,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:29,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372158551] [2020-08-18 20:18:29,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:29,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:29,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:29,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:29,921 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-18 20:18:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:30,135 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-18 20:18:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:30,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-18 20:18:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:30,138 INFO L225 Difference]: With dead ends: 363 [2020-08-18 20:18:30,138 INFO L226 Difference]: Without dead ends: 199 [2020-08-18 20:18:30,140 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 [2020-08-18 20:18:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-18 20:18:30,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-18 20:18:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-18 20:18:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-18 20:18:30,157 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-18 20:18:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:30,157 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-18 20:18:30,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-18 20:18:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 20:18:30,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:30,159 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] [2020-08-18 20:18:30,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:18:30,160 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:30,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-18 20:18:30,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:30,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707945845] [2020-08-18 20:18:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:30,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:30,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707945845] [2020-08-18 20:18:30,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:30,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:30,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025761087] [2020-08-18 20:18:30,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:30,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:30,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:30,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:30,286 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-18 20:18:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:30,540 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-18 20:18:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:30,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-18 20:18:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:30,543 INFO L225 Difference]: With dead ends: 393 [2020-08-18 20:18:30,543 INFO L226 Difference]: Without dead ends: 207 [2020-08-18 20:18:30,544 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 [2020-08-18 20:18:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-18 20:18:30,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-18 20:18:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-18 20:18:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-18 20:18:30,560 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-18 20:18:30,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:30,560 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-18 20:18:30,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-18 20:18:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 20:18:30,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:30,562 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] [2020-08-18 20:18:30,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:18:30,563 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:30,563 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-18 20:18:30,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:30,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552656529] [2020-08-18 20:18:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:30,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:30,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552656529] [2020-08-18 20:18:30,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:30,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:30,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594456982] [2020-08-18 20:18:30,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:30,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:30,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:30,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:30,641 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-18 20:18:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:30,835 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-18 20:18:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:30,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-18 20:18:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:30,838 INFO L225 Difference]: With dead ends: 398 [2020-08-18 20:18:30,838 INFO L226 Difference]: Without dead ends: 206 [2020-08-18 20:18:30,839 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 [2020-08-18 20:18:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-18 20:18:30,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-18 20:18:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-18 20:18:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-18 20:18:30,852 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-18 20:18:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:30,852 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-18 20:18:30,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-18 20:18:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-18 20:18:30,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:30,854 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] [2020-08-18 20:18:30,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:18:30,855 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:30,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:30,855 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-18 20:18:30,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:30,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133489053] [2020-08-18 20:18:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:30,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:30,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133489053] [2020-08-18 20:18:30,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:30,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:30,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113424617] [2020-08-18 20:18:30,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:30,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:30,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:30,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:30,932 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-18 20:18:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:31,127 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-18 20:18:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:31,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-18 20:18:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:31,129 INFO L225 Difference]: With dead ends: 409 [2020-08-18 20:18:31,130 INFO L226 Difference]: Without dead ends: 216 [2020-08-18 20:18:31,131 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 [2020-08-18 20:18:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-18 20:18:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-18 20:18:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-18 20:18:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-18 20:18:31,145 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-18 20:18:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:31,147 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-18 20:18:31,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-18 20:18:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 20:18:31,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:31,155 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] [2020-08-18 20:18:31,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:18:31,155 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:31,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-18 20:18:31,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:31,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703868166] [2020-08-18 20:18:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:31,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:31,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703868166] [2020-08-18 20:18:31,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:31,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:31,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808766788] [2020-08-18 20:18:31,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:31,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:31,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:31,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:31,241 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-18 20:18:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:31,443 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-18 20:18:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:31,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-18 20:18:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:31,446 INFO L225 Difference]: With dead ends: 409 [2020-08-18 20:18:31,446 INFO L226 Difference]: Without dead ends: 216 [2020-08-18 20:18:31,447 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 [2020-08-18 20:18:31,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-18 20:18:31,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-18 20:18:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-18 20:18:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-18 20:18:31,458 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-18 20:18:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:31,458 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-18 20:18:31,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-18 20:18:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-18 20:18:31,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:31,460 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] [2020-08-18 20:18:31,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:18:31,460 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:31,460 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-18 20:18:31,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:31,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575789927] [2020-08-18 20:18:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:31,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:31,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575789927] [2020-08-18 20:18:31,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:31,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:31,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954276346] [2020-08-18 20:18:31,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:31,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:31,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:31,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:31,507 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-18 20:18:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:31,686 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-18 20:18:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:31,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-18 20:18:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:31,688 INFO L225 Difference]: With dead ends: 409 [2020-08-18 20:18:31,689 INFO L226 Difference]: Without dead ends: 216 [2020-08-18 20:18:31,689 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 [2020-08-18 20:18:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-18 20:18:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-18 20:18:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-18 20:18:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-18 20:18:31,700 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-18 20:18:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:31,700 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-18 20:18:31,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-18 20:18:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-18 20:18:31,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:31,702 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] [2020-08-18 20:18:31,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:18:31,702 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:31,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-18 20:18:31,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:31,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171163814] [2020-08-18 20:18:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:31,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171163814] [2020-08-18 20:18:31,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:31,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:18:31,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700294791] [2020-08-18 20:18:31,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:18:31,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:31,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:18:31,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:18:31,761 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-18 20:18:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:32,073 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-18 20:18:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:18:32,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-18 20:18:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:32,077 INFO L225 Difference]: With dead ends: 605 [2020-08-18 20:18:32,077 INFO L226 Difference]: Without dead ends: 412 [2020-08-18 20:18:32,078 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 [2020-08-18 20:18:32,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-18 20:18:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-18 20:18:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-18 20:18:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-18 20:18:32,104 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-18 20:18:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:32,104 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-18 20:18:32,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:18:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-18 20:18:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-18 20:18:32,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:32,106 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] [2020-08-18 20:18:32,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:18:32,107 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:32,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-18 20:18:32,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:32,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991487239] [2020-08-18 20:18:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:32,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:32,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991487239] [2020-08-18 20:18:32,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:32,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:32,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988248046] [2020-08-18 20:18:32,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:32,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:32,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:32,178 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-18 20:18:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:32,440 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-18 20:18:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:32,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-18 20:18:32,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:32,447 INFO L225 Difference]: With dead ends: 847 [2020-08-18 20:18:32,447 INFO L226 Difference]: Without dead ends: 472 [2020-08-18 20:18:32,449 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 [2020-08-18 20:18:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-18 20:18:32,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-18 20:18:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-18 20:18:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-18 20:18:32,476 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-18 20:18:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:32,477 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-18 20:18:32,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:32,479 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-18 20:18:32,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-18 20:18:32,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:32,481 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] [2020-08-18 20:18:32,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:18:32,481 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:32,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-18 20:18:32,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:32,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431547390] [2020-08-18 20:18:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:32,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431547390] [2020-08-18 20:18:32,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:32,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:32,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136009845] [2020-08-18 20:18:32,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:32,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:32,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:32,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:32,577 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-18 20:18:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:32,841 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-18 20:18:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:32,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-18 20:18:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:32,846 INFO L225 Difference]: With dead ends: 936 [2020-08-18 20:18:32,846 INFO L226 Difference]: Without dead ends: 495 [2020-08-18 20:18:32,847 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 [2020-08-18 20:18:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-18 20:18:32,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-18 20:18:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-18 20:18:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-18 20:18:32,871 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-18 20:18:32,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:32,871 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-18 20:18:32,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:32,872 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-18 20:18:32,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 20:18:32,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:32,873 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] [2020-08-18 20:18:32,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:18:32,874 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:32,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:32,874 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-18 20:18:32,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:32,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410113510] [2020-08-18 20:18:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 20:18:32,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410113510] [2020-08-18 20:18:32,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:32,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:32,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138152361] [2020-08-18 20:18:32,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:32,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:32,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:32,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:32,934 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-18 20:18:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:33,149 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-18 20:18:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:33,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-18 20:18:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:33,153 INFO L225 Difference]: With dead ends: 993 [2020-08-18 20:18:33,153 INFO L226 Difference]: Without dead ends: 529 [2020-08-18 20:18:33,154 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 [2020-08-18 20:18:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-18 20:18:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-18 20:18:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-18 20:18:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-18 20:18:33,177 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-18 20:18:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:33,178 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-18 20:18:33,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-18 20:18:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 20:18:33,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:33,179 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] [2020-08-18 20:18:33,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:18:33,180 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:33,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:33,180 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-18 20:18:33,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:33,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673156895] [2020-08-18 20:18:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:33,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 20:18:33,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673156895] [2020-08-18 20:18:33,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:33,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:33,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558008387] [2020-08-18 20:18:33,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:33,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:33,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:33,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:33,227 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-18 20:18:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:33,455 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-18 20:18:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:33,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-18 20:18:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:33,458 INFO L225 Difference]: With dead ends: 1027 [2020-08-18 20:18:33,458 INFO L226 Difference]: Without dead ends: 529 [2020-08-18 20:18:33,460 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 [2020-08-18 20:18:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-18 20:18:33,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-18 20:18:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-18 20:18:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-18 20:18:33,497 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-18 20:18:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:33,498 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-18 20:18:33,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-18 20:18:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 20:18:33,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:33,499 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] [2020-08-18 20:18:33,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:18:33,500 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:33,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:33,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-18 20:18:33,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:33,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777059528] [2020-08-18 20:18:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:33,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 20:18:33,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777059528] [2020-08-18 20:18:33,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:33,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:33,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561386379] [2020-08-18 20:18:33,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:33,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:33,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:33,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:33,553 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-18 20:18:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:33,804 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-18 20:18:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:33,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-18 20:18:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:33,808 INFO L225 Difference]: With dead ends: 1074 [2020-08-18 20:18:33,809 INFO L226 Difference]: Without dead ends: 576 [2020-08-18 20:18:33,810 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 [2020-08-18 20:18:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-18 20:18:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-18 20:18:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-18 20:18:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-18 20:18:33,839 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-18 20:18:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:33,840 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-18 20:18:33,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-18 20:18:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 20:18:33,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:33,846 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] [2020-08-18 20:18:33,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 20:18:33,846 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-18 20:18:33,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:33,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373909388] [2020-08-18 20:18:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:33,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:33,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373909388] [2020-08-18 20:18:33,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:33,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:33,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076315249] [2020-08-18 20:18:33,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:33,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:33,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:33,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:33,936 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-18 20:18:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:34,165 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-18 20:18:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:34,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-18 20:18:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:34,169 INFO L225 Difference]: With dead ends: 1184 [2020-08-18 20:18:34,169 INFO L226 Difference]: Without dead ends: 623 [2020-08-18 20:18:34,171 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 [2020-08-18 20:18:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-18 20:18:34,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-18 20:18:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 20:18:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-18 20:18:34,204 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-18 20:18:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:34,204 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-18 20:18:34,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-18 20:18:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-18 20:18:34,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:34,209 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] [2020-08-18 20:18:34,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 20:18:34,209 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:34,210 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-18 20:18:34,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:34,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568553185] [2020-08-18 20:18:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:34,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568553185] [2020-08-18 20:18:34,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:34,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:34,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347992790] [2020-08-18 20:18:34,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:34,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:34,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:34,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:34,302 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-18 20:18:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:34,524 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-18 20:18:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:34,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-18 20:18:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:34,529 INFO L225 Difference]: With dead ends: 1227 [2020-08-18 20:18:34,529 INFO L226 Difference]: Without dead ends: 623 [2020-08-18 20:18:34,532 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 [2020-08-18 20:18:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-18 20:18:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-18 20:18:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 20:18:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-18 20:18:34,558 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-18 20:18:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:34,559 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-18 20:18:34,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-18 20:18:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:18:34,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:34,561 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] [2020-08-18 20:18:34,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 20:18:34,561 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:34,561 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-18 20:18:34,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:34,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611840930] [2020-08-18 20:18:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:34,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 20:18:34,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611840930] [2020-08-18 20:18:34,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:34,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:34,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247115847] [2020-08-18 20:18:34,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:34,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:34,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:34,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:34,625 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-18 20:18:34,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:34,820 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-18 20:18:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:34,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-18 20:18:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:34,823 INFO L225 Difference]: With dead ends: 1223 [2020-08-18 20:18:34,824 INFO L226 Difference]: Without dead ends: 619 [2020-08-18 20:18:34,825 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 [2020-08-18 20:18:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-18 20:18:34,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-18 20:18:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 20:18:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-18 20:18:34,852 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-18 20:18:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:34,852 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-18 20:18:34,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-18 20:18:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 20:18:34,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:34,854 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] [2020-08-18 20:18:34,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 20:18:34,854 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:34,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:34,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-18 20:18:34,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:34,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371682519] [2020-08-18 20:18:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 20:18:34,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371682519] [2020-08-18 20:18:34,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:34,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:34,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152034005] [2020-08-18 20:18:34,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:34,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:34,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:34,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:34,952 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-18 20:18:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:35,152 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-18 20:18:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:35,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-18 20:18:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:35,156 INFO L225 Difference]: With dead ends: 1281 [2020-08-18 20:18:35,156 INFO L226 Difference]: Without dead ends: 677 [2020-08-18 20:18:35,158 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 [2020-08-18 20:18:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-18 20:18:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-18 20:18:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 20:18:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-18 20:18:35,194 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-18 20:18:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:35,194 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-18 20:18:35,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:35,194 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-18 20:18:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 20:18:35,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:35,196 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] [2020-08-18 20:18:35,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 20:18:35,197 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:35,197 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-18 20:18:35,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:35,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927090224] [2020-08-18 20:18:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 20:18:35,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927090224] [2020-08-18 20:18:35,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:35,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:35,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207162791] [2020-08-18 20:18:35,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:35,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:35,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:35,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:35,267 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-18 20:18:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:35,473 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-18 20:18:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:35,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-18 20:18:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:35,477 INFO L225 Difference]: With dead ends: 1313 [2020-08-18 20:18:35,478 INFO L226 Difference]: Without dead ends: 677 [2020-08-18 20:18:35,480 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 [2020-08-18 20:18:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-18 20:18:35,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-18 20:18:35,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 20:18:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-18 20:18:35,513 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-18 20:18:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:35,513 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-18 20:18:35,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-18 20:18:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-18 20:18:35,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:35,517 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] [2020-08-18 20:18:35,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 20:18:35,517 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:35,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-18 20:18:35,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:35,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686882745] [2020-08-18 20:18:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:35,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 20:18:35,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686882745] [2020-08-18 20:18:35,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:35,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:35,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186590730] [2020-08-18 20:18:35,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:35,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:35,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:35,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:35,577 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-18 20:18:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:35,842 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-18 20:18:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:35,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-18 20:18:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:35,846 INFO L225 Difference]: With dead ends: 1349 [2020-08-18 20:18:35,846 INFO L226 Difference]: Without dead ends: 713 [2020-08-18 20:18:35,848 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 [2020-08-18 20:18:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-18 20:18:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-18 20:18:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-18 20:18:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-18 20:18:35,883 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-18 20:18:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:35,883 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-18 20:18:35,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-18 20:18:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-18 20:18:35,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:35,885 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] [2020-08-18 20:18:35,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 20:18:35,886 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:35,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-18 20:18:35,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:35,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920794124] [2020-08-18 20:18:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 20:18:35,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920794124] [2020-08-18 20:18:35,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:35,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:35,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038245063] [2020-08-18 20:18:35,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:35,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:35,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:35,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:35,964 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-18 20:18:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:36,313 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-18 20:18:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:36,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-18 20:18:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:36,319 INFO L225 Difference]: With dead ends: 1406 [2020-08-18 20:18:36,319 INFO L226 Difference]: Without dead ends: 714 [2020-08-18 20:18:36,321 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 [2020-08-18 20:18:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-18 20:18:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-18 20:18:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 20:18:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-18 20:18:36,370 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-18 20:18:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:36,370 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-18 20:18:36,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:36,371 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-18 20:18:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-18 20:18:36,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:36,374 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] [2020-08-18 20:18:36,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 20:18:36,375 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:36,375 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-18 20:18:36,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:36,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472770160] [2020-08-18 20:18:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:36,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-18 20:18:36,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472770160] [2020-08-18 20:18:36,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:36,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:36,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014797981] [2020-08-18 20:18:36,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:36,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:36,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:36,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:36,481 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-18 20:18:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:36,822 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-18 20:18:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:36,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-18 20:18:36,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:36,828 INFO L225 Difference]: With dead ends: 1438 [2020-08-18 20:18:36,828 INFO L226 Difference]: Without dead ends: 749 [2020-08-18 20:18:36,831 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 [2020-08-18 20:18:36,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-18 20:18:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-18 20:18:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-18 20:18:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-18 20:18:36,886 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-18 20:18:36,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:36,886 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-18 20:18:36,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-18 20:18:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-18 20:18:36,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:36,890 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] [2020-08-18 20:18:36,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 20:18:36,891 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:36,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:36,891 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-18 20:18:36,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:36,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530260202] [2020-08-18 20:18:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-18 20:18:37,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530260202] [2020-08-18 20:18:37,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:37,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:37,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751751175] [2020-08-18 20:18:37,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:37,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:37,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:37,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:37,008 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-18 20:18:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:37,337 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-18 20:18:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:37,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-18 20:18:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:37,345 INFO L225 Difference]: With dead ends: 1479 [2020-08-18 20:18:37,345 INFO L226 Difference]: Without dead ends: 749 [2020-08-18 20:18:37,348 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 [2020-08-18 20:18:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-18 20:18:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-18 20:18:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-18 20:18:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-18 20:18:37,419 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-18 20:18:37,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:37,419 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-18 20:18:37,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-18 20:18:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-18 20:18:37,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:37,425 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] [2020-08-18 20:18:37,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 20:18:37,425 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-18 20:18:37,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:37,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380498816] [2020-08-18 20:18:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-18 20:18:37,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380498816] [2020-08-18 20:18:37,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:37,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:37,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472754859] [2020-08-18 20:18:37,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:37,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:37,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:37,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:37,527 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-18 20:18:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:37,802 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-18 20:18:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:37,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-18 20:18:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:37,807 INFO L225 Difference]: With dead ends: 1515 [2020-08-18 20:18:37,807 INFO L226 Difference]: Without dead ends: 785 [2020-08-18 20:18:37,809 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 [2020-08-18 20:18:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-18 20:18:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-18 20:18:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-18 20:18:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-18 20:18:37,884 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-18 20:18:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:37,884 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-18 20:18:37,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-18 20:18:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-18 20:18:37,886 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:37,886 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] [2020-08-18 20:18:37,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 20:18:37,888 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:37,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:37,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-18 20:18:37,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:37,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782079642] [2020-08-18 20:18:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-18 20:18:37,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782079642] [2020-08-18 20:18:37,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:37,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:37,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622630005] [2020-08-18 20:18:37,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:37,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:37,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:37,964 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-18 20:18:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:38,247 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-18 20:18:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:38,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-18 20:18:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:38,253 INFO L225 Difference]: With dead ends: 1547 [2020-08-18 20:18:38,253 INFO L226 Difference]: Without dead ends: 785 [2020-08-18 20:18:38,256 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 [2020-08-18 20:18:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-18 20:18:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-18 20:18:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-18 20:18:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-18 20:18:38,317 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-18 20:18:38,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:38,318 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-18 20:18:38,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-18 20:18:38,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-18 20:18:38,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:38,322 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] [2020-08-18 20:18:38,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 20:18:38,323 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:38,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:38,324 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-18 20:18:38,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:38,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672884577] [2020-08-18 20:18:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:38,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-18 20:18:38,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672884577] [2020-08-18 20:18:38,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:38,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:38,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518705809] [2020-08-18 20:18:38,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:38,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:38,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:38,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:38,424 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-18 20:18:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:38,711 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-18 20:18:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:38,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-18 20:18:38,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:38,715 INFO L225 Difference]: With dead ends: 1573 [2020-08-18 20:18:38,716 INFO L226 Difference]: Without dead ends: 811 [2020-08-18 20:18:38,718 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 [2020-08-18 20:18:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-18 20:18:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-18 20:18:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-18 20:18:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-18 20:18:38,760 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-18 20:18:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:38,760 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-18 20:18:38,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-18 20:18:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 20:18:38,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:38,765 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] [2020-08-18 20:18:38,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-18 20:18:38,765 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-18 20:18:38,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:38,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014096477] [2020-08-18 20:18:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:38,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-18 20:18:38,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014096477] [2020-08-18 20:18:38,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:38,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:38,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889745449] [2020-08-18 20:18:38,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:38,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:38,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:38,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:38,861 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-18 20:18:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:39,074 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-18 20:18:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:39,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-18 20:18:39,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:39,079 INFO L225 Difference]: With dead ends: 1601 [2020-08-18 20:18:39,079 INFO L226 Difference]: Without dead ends: 811 [2020-08-18 20:18:39,080 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 [2020-08-18 20:18:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-18 20:18:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-18 20:18:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-18 20:18:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-18 20:18:39,124 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-18 20:18:39,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:39,124 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-18 20:18:39,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-18 20:18:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 20:18:39,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:39,127 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] [2020-08-18 20:18:39,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-18 20:18:39,127 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-18 20:18:39,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:39,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159841675] [2020-08-18 20:18:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 20:18:39,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159841675] [2020-08-18 20:18:39,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:39,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:39,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482363016] [2020-08-18 20:18:39,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:39,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:39,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:39,197 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-18 20:18:39,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:39,435 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-18 20:18:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:39,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-18 20:18:39,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:39,440 INFO L225 Difference]: With dead ends: 1656 [2020-08-18 20:18:39,440 INFO L226 Difference]: Without dead ends: 866 [2020-08-18 20:18:39,442 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 [2020-08-18 20:18:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-18 20:18:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-18 20:18:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-18 20:18:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-18 20:18:39,486 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-18 20:18:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:39,486 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-18 20:18:39,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-18 20:18:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 20:18:39,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:39,489 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] [2020-08-18 20:18:39,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-18 20:18:39,489 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:39,490 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-18 20:18:39,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:39,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793404482] [2020-08-18 20:18:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:39,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 20:18:39,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793404482] [2020-08-18 20:18:39,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:39,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:39,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690974622] [2020-08-18 20:18:39,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:39,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:39,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:39,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:39,558 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-18 20:18:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:39,838 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-18 20:18:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:39,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-18 20:18:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:39,844 INFO L225 Difference]: With dead ends: 1705 [2020-08-18 20:18:39,844 INFO L226 Difference]: Without dead ends: 850 [2020-08-18 20:18:39,846 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 [2020-08-18 20:18:39,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-18 20:18:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-18 20:18:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-18 20:18:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-18 20:18:39,899 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-18 20:18:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:39,900 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-18 20:18:39,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-18 20:18:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 20:18:39,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:39,905 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] [2020-08-18 20:18:39,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-18 20:18:39,905 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:39,906 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-18 20:18:39,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:39,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231135699] [2020-08-18 20:18:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-18 20:18:39,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231135699] [2020-08-18 20:18:39,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:39,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:39,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086265415] [2020-08-18 20:18:39,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:39,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:39,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:39,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:39,997 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-18 20:18:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:40,244 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-18 20:18:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:40,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-18 20:18:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:40,248 INFO L225 Difference]: With dead ends: 1671 [2020-08-18 20:18:40,248 INFO L226 Difference]: Without dead ends: 848 [2020-08-18 20:18:40,251 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 [2020-08-18 20:18:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-18 20:18:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-18 20:18:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-18 20:18:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-18 20:18:40,295 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-18 20:18:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:40,296 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-18 20:18:40,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-18 20:18:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 20:18:40,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:40,298 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] [2020-08-18 20:18:40,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-18 20:18:40,298 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-18 20:18:40,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:40,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307209364] [2020-08-18 20:18:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-18 20:18:40,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307209364] [2020-08-18 20:18:40,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:40,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:18:40,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045262678] [2020-08-18 20:18:40,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:18:40,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:40,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:18:40,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:18:40,367 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-18 20:18:40,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:40,613 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-18 20:18:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:18:40,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-18 20:18:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:40,618 INFO L225 Difference]: With dead ends: 1671 [2020-08-18 20:18:40,618 INFO L226 Difference]: Without dead ends: 831 [2020-08-18 20:18:40,621 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 [2020-08-18 20:18:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-18 20:18:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-18 20:18:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-18 20:18:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-18 20:18:40,676 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-18 20:18:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:40,676 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-18 20:18:40,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:18:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-18 20:18:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-18 20:18:40,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:40,680 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] [2020-08-18 20:18:40,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-18 20:18:40,681 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:40,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-18 20:18:40,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:40,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825739694] [2020-08-18 20:18:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:40,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-18 20:18:40,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825739694] [2020-08-18 20:18:40,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:40,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:18:40,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620892403] [2020-08-18 20:18:40,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:18:40,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:40,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:18:40,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:18:40,761 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-18 20:18:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:40,847 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-18 20:18:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:18:40,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-18 20:18:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:40,855 INFO L225 Difference]: With dead ends: 2417 [2020-08-18 20:18:40,855 INFO L226 Difference]: Without dead ends: 1611 [2020-08-18 20:18:40,857 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 [2020-08-18 20:18:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-18 20:18:40,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-18 20:18:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-18 20:18:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-18 20:18:40,909 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-18 20:18:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:40,909 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-18 20:18:40,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:18:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-18 20:18:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-18 20:18:40,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:40,911 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] [2020-08-18 20:18:40,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-18 20:18:40,912 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:40,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:40,913 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-18 20:18:40,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:40,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101483540] [2020-08-18 20:18:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:40,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-18 20:18:40,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101483540] [2020-08-18 20:18:40,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:40,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:18:40,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754118614] [2020-08-18 20:18:40,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:18:40,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:40,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:18:40,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:18:40,990 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-18 20:18:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:41,118 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-18 20:18:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:18:41,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-18 20:18:41,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:41,127 INFO L225 Difference]: With dead ends: 2416 [2020-08-18 20:18:41,128 INFO L226 Difference]: Without dead ends: 1608 [2020-08-18 20:18:41,131 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 [2020-08-18 20:18:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-18 20:18:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-18 20:18:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-18 20:18:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-18 20:18:41,269 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-18 20:18:41,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:41,270 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-18 20:18:41,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:18:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-18 20:18:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-18 20:18:41,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:41,275 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] [2020-08-18 20:18:41,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-18 20:18:41,276 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:41,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-18 20:18:41,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:41,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385463905] [2020-08-18 20:18:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-18 20:18:41,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385463905] [2020-08-18 20:18:41,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:41,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:18:41,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306812563] [2020-08-18 20:18:41,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:18:41,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:18:41,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:18:41,471 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-18 20:18:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:41,698 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-18 20:18:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:18:41,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-18 20:18:41,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:41,711 INFO L225 Difference]: With dead ends: 4752 [2020-08-18 20:18:41,712 INFO L226 Difference]: Without dead ends: 3159 [2020-08-18 20:18:41,717 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 [2020-08-18 20:18:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-18 20:18:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-18 20:18:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-18 20:18:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-18 20:18:41,828 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-18 20:18:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:41,829 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-18 20:18:41,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:18:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-18 20:18:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-18 20:18:41,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:41,831 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] [2020-08-18 20:18:41,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-18 20:18:41,832 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:41,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:41,832 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-18 20:18:41,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:41,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122120580] [2020-08-18 20:18:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-18 20:18:41,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122120580] [2020-08-18 20:18:41,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:41,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:18:41,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702468630] [2020-08-18 20:18:41,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:18:41,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:41,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:18:41,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:18:41,916 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-18 20:18:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:42,262 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-18 20:18:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:18:42,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-18 20:18:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:42,291 INFO L225 Difference]: With dead ends: 4792 [2020-08-18 20:18:42,291 INFO L226 Difference]: Without dead ends: 3199 [2020-08-18 20:18:42,298 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 [2020-08-18 20:18:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-18 20:18:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-18 20:18:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-18 20:18:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-18 20:18:42,506 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-18 20:18:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:42,507 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-18 20:18:42,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:18:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-18 20:18:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-18 20:18:42,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:42,511 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] [2020-08-18 20:18:42,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-18 20:18:42,511 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-18 20:18:42,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:42,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29850946] [2020-08-18 20:18:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:18:42,554 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:18:42,555 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:18:42,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-18 20:18:42,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:18:42 BoogieIcfgContainer [2020-08-18 20:18:42,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:18:42,613 INFO L168 Benchmark]: Toolchain (without parser) took 15168.21 ms. Allocated memory was 144.7 MB in the beginning and 488.1 MB in the end (delta: 343.4 MB). Free memory was 102.2 MB in the beginning and 264.3 MB in the end (delta: -162.1 MB). Peak memory consumption was 181.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:42,614 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:18:42,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.76 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 102.0 MB in the beginning and 178.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:42,615 INFO L168 Benchmark]: Boogie Preprocessor took 58.13 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 175.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:42,615 INFO L168 Benchmark]: RCFGBuilder took 837.85 ms. Allocated memory is still 203.9 MB. Free memory was 175.4 MB in the beginning and 117.8 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:42,616 INFO L168 Benchmark]: TraceAbstraction took 13734.56 ms. Allocated memory was 203.9 MB in the beginning and 488.1 MB in the end (delta: 284.2 MB). Free memory was 117.1 MB in the beginning and 264.3 MB in the end (delta: -147.2 MB). Peak memory consumption was 137.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:42,617 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 532.76 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 102.0 MB in the beginning and 178.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.13 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 175.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 837.85 ms. Allocated memory is still 203.9 MB. Free memory was 175.4 MB in the beginning and 117.8 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13734.56 ms. Allocated memory was 203.9 MB in the beginning and 488.1 MB in the end (delta: 284.2 MB). Free memory was 117.1 MB in the beginning and 264.3 MB in the end (delta: -147.2 MB). Peak memory consumption was 137.0 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: 13.6s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 8.7s, 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, 4.9s 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: 1.5s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.6s 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...