/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-22 05:28:26,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:28:26,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:28:26,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:28:26,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:28:26,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:28:26,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:28:26,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:28:26,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:28:26,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:28:26,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:28:26,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:28:26,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:28:26,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:28:26,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:28:26,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:28:26,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:28:26,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:28:26,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:28:26,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:28:26,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:28:26,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:28:26,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:28:26,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:28:26,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:28:26,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:28:26,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:28:26,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:28:26,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:28:26,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:28:26,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:28:26,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:28:26,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:28:26,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:28:26,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:28:26,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:28:26,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:28:26,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:28:26,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:28:26,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:28:26,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:28:26,930 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 [2020-08-22 05:28:26,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:28:26,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:28:26,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:28:26,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:28:26,965 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:28:26,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:28:26,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:28:26,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:28:26,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:28:26,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:28:26,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:28:26,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:28:26,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:28:26,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:28:26,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:28:26,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:28:26,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:28:26,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:28:26,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:28:26,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:28:26,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:28:26,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:28:26,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:28:26,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:28:26,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:28:26,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:28:26,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:28:26,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:28:26,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:28:26,973 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:28:27,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:28:27,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:28:27,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:28:27,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:28:27,352 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:28:27,353 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 05:28:27,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c772d0b/1db2c3ac2cb4444c819fcaf5e228543d/FLAG80313c953 [2020-08-22 05:28:27,898 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:28:27,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-08-22 05:28:27,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c772d0b/1db2c3ac2cb4444c819fcaf5e228543d/FLAG80313c953 [2020-08-22 05:28:28,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c772d0b/1db2c3ac2cb4444c819fcaf5e228543d [2020-08-22 05:28:28,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:28:28,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:28:28,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:28:28,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:28:28,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:28:28,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1a52a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28, skipping insertion in model container [2020-08-22 05:28:28,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:28:28,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:28:28,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:28:28,598 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:28:28,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:28:28,762 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:28:28,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28 WrapperNode [2020-08-22 05:28:28,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:28:28,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:28:28,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:28:28,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:28:28,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (1/1) ... [2020-08-22 05:28:28,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:28:28,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:28:28,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:28:28,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:28:28,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (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 [2020-08-22 05:28:28,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:28:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:28:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-08-22 05:28:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:28:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:28:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 05:28:28,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:28:28,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 05:28:28,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 05:28:28,902 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-08-22 05:28:28,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:28:28,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:28:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:28:29,103 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 05:28:29,799 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-08-22 05:28:29,800 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-08-22 05:28:29,812 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:28:29,812 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 05:28:29,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:29 BoogieIcfgContainer [2020-08-22 05:28:29,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:28:29,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:28:29,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:28:29,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:28:29,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:28:28" (1/3) ... [2020-08-22 05:28:29,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe73b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:29, skipping insertion in model container [2020-08-22 05:28:29,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:28" (2/3) ... [2020-08-22 05:28:29,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe73b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:29, skipping insertion in model container [2020-08-22 05:28:29,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:29" (3/3) ... [2020-08-22 05:28:29,827 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-08-22 05:28:29,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:28:29,846 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:28:29,860 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:28:29,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:28:29,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:28:29,891 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:28:29,891 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:28:29,891 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:28:29,891 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:28:29,891 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:28:29,891 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:28:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-22 05:28:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 05:28:29,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:29,930 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] [2020-08-22 05:28:29,930 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:29,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1312867208, now seen corresponding path program 1 times [2020-08-22 05:28:29,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:29,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465545844] [2020-08-22 05:28:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:30,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465545844] [2020-08-22 05:28:30,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:30,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:30,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682397913] [2020-08-22 05:28:30,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:30,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:30,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:30,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:30,275 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 5 states. [2020-08-22 05:28:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:30,748 INFO L93 Difference]: Finished difference Result 362 states and 623 transitions. [2020-08-22 05:28:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:30,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-08-22 05:28:30,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:30,773 INFO L225 Difference]: With dead ends: 362 [2020-08-22 05:28:30,774 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 05:28:30,780 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 [2020-08-22 05:28:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 05:28:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-08-22 05:28:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 05:28:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 282 transitions. [2020-08-22 05:28:30,848 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 282 transitions. Word has length 33 [2020-08-22 05:28:30,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:30,849 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 282 transitions. [2020-08-22 05:28:30,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 282 transitions. [2020-08-22 05:28:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 05:28:30,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:30,851 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] [2020-08-22 05:28:30,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:28:30,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:30,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:30,853 INFO L82 PathProgramCache]: Analyzing trace with hash -564854069, now seen corresponding path program 1 times [2020-08-22 05:28:30,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:30,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847721709] [2020-08-22 05:28:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:30,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847721709] [2020-08-22 05:28:30,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:30,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:30,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393856640] [2020-08-22 05:28:30,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:30,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:30,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:30,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:30,964 INFO L87 Difference]: Start difference. First operand 177 states and 282 transitions. Second operand 5 states. [2020-08-22 05:28:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:31,230 INFO L93 Difference]: Finished difference Result 363 states and 580 transitions. [2020-08-22 05:28:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:31,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 05:28:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:31,233 INFO L225 Difference]: With dead ends: 363 [2020-08-22 05:28:31,234 INFO L226 Difference]: Without dead ends: 199 [2020-08-22 05:28:31,236 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 [2020-08-22 05:28:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-22 05:28:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-08-22 05:28:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-22 05:28:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 312 transitions. [2020-08-22 05:28:31,271 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 312 transitions. Word has length 34 [2020-08-22 05:28:31,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:31,272 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 312 transitions. [2020-08-22 05:28:31,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:31,272 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 312 transitions. [2020-08-22 05:28:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 05:28:31,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:31,277 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] [2020-08-22 05:28:31,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:28:31,278 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:31,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:31,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2005409376, now seen corresponding path program 1 times [2020-08-22 05:28:31,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:31,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246367509] [2020-08-22 05:28:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:31,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:31,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246367509] [2020-08-22 05:28:31,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:31,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:31,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252737302] [2020-08-22 05:28:31,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:31,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:31,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:31,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:31,384 INFO L87 Difference]: Start difference. First operand 199 states and 312 transitions. Second operand 5 states. [2020-08-22 05:28:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:31,634 INFO L93 Difference]: Finished difference Result 393 states and 621 transitions. [2020-08-22 05:28:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:31,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 05:28:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:31,639 INFO L225 Difference]: With dead ends: 393 [2020-08-22 05:28:31,639 INFO L226 Difference]: Without dead ends: 207 [2020-08-22 05:28:31,645 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 [2020-08-22 05:28:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-22 05:28:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-08-22 05:28:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-22 05:28:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2020-08-22 05:28:31,675 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 34 [2020-08-22 05:28:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:31,675 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2020-08-22 05:28:31,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2020-08-22 05:28:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 05:28:31,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:31,682 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] [2020-08-22 05:28:31,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:28:31,682 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:31,684 INFO L82 PathProgramCache]: Analyzing trace with hash 473070591, now seen corresponding path program 1 times [2020-08-22 05:28:31,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:31,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243409352] [2020-08-22 05:28:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:31,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:31,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243409352] [2020-08-22 05:28:31,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:31,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:31,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345461850] [2020-08-22 05:28:31,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:31,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:31,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:31,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:31,812 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand 5 states. [2020-08-22 05:28:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:32,036 INFO L93 Difference]: Finished difference Result 398 states and 631 transitions. [2020-08-22 05:28:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:32,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-22 05:28:32,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:32,038 INFO L225 Difference]: With dead ends: 398 [2020-08-22 05:28:32,039 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 05:28:32,040 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 [2020-08-22 05:28:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 05:28:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-22 05:28:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 05:28:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 324 transitions. [2020-08-22 05:28:32,052 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 324 transitions. Word has length 34 [2020-08-22 05:28:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:32,052 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 324 transitions. [2020-08-22 05:28:32,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:32,052 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 324 transitions. [2020-08-22 05:28:32,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 05:28:32,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:32,054 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] [2020-08-22 05:28:32,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:28:32,054 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:32,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:32,055 INFO L82 PathProgramCache]: Analyzing trace with hash 715486203, now seen corresponding path program 1 times [2020-08-22 05:28:32,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:32,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764341429] [2020-08-22 05:28:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:32,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:32,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764341429] [2020-08-22 05:28:32,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:32,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:32,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735023234] [2020-08-22 05:28:32,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:32,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:32,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:32,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:32,138 INFO L87 Difference]: Start difference. First operand 206 states and 324 transitions. Second operand 5 states. [2020-08-22 05:28:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:32,337 INFO L93 Difference]: Finished difference Result 409 states and 643 transitions. [2020-08-22 05:28:32,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:32,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-22 05:28:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:32,340 INFO L225 Difference]: With dead ends: 409 [2020-08-22 05:28:32,340 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 05:28:32,341 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 [2020-08-22 05:28:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 05:28:32,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 05:28:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 05:28:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 322 transitions. [2020-08-22 05:28:32,358 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 322 transitions. Word has length 35 [2020-08-22 05:28:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:32,360 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 322 transitions. [2020-08-22 05:28:32,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 322 transitions. [2020-08-22 05:28:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 05:28:32,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:32,365 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] [2020-08-22 05:28:32,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:28:32,365 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:32,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:32,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1092720099, now seen corresponding path program 1 times [2020-08-22 05:28:32,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:32,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813441211] [2020-08-22 05:28:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:32,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813441211] [2020-08-22 05:28:32,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:32,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:32,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125412826] [2020-08-22 05:28:32,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:32,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:32,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:32,460 INFO L87 Difference]: Start difference. First operand 206 states and 322 transitions. Second operand 5 states. [2020-08-22 05:28:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:32,708 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2020-08-22 05:28:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:32,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-22 05:28:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:32,711 INFO L225 Difference]: With dead ends: 409 [2020-08-22 05:28:32,711 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 05:28:32,712 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 [2020-08-22 05:28:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 05:28:32,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 05:28:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 05:28:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2020-08-22 05:28:32,734 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 36 [2020-08-22 05:28:32,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:32,734 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2020-08-22 05:28:32,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2020-08-22 05:28:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 05:28:32,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:32,737 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] [2020-08-22 05:28:32,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:28:32,737 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:32,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:32,737 INFO L82 PathProgramCache]: Analyzing trace with hash 958823552, now seen corresponding path program 1 times [2020-08-22 05:28:32,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:32,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276270372] [2020-08-22 05:28:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:32,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:32,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276270372] [2020-08-22 05:28:32,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:32,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:32,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646132229] [2020-08-22 05:28:32,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:32,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:32,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:32,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:32,824 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand 5 states. [2020-08-22 05:28:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:33,020 INFO L93 Difference]: Finished difference Result 409 states and 635 transitions. [2020-08-22 05:28:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:33,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-22 05:28:33,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:33,023 INFO L225 Difference]: With dead ends: 409 [2020-08-22 05:28:33,023 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 05:28:33,024 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 [2020-08-22 05:28:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 05:28:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 206. [2020-08-22 05:28:33,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 05:28:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2020-08-22 05:28:33,038 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 37 [2020-08-22 05:28:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:33,038 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2020-08-22 05:28:33,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2020-08-22 05:28:33,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 05:28:33,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:33,044 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] [2020-08-22 05:28:33,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:28:33,044 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1433612927, now seen corresponding path program 1 times [2020-08-22 05:28:33,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:33,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577700689] [2020-08-22 05:28:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:33,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577700689] [2020-08-22 05:28:33,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:33,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:28:33,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051341837] [2020-08-22 05:28:33,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:28:33,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:33,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:28:33,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:28:33,154 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand 6 states. [2020-08-22 05:28:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:33,498 INFO L93 Difference]: Finished difference Result 605 states and 935 transitions. [2020-08-22 05:28:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:28:33,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-22 05:28:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:33,502 INFO L225 Difference]: With dead ends: 605 [2020-08-22 05:28:33,503 INFO L226 Difference]: Without dead ends: 412 [2020-08-22 05:28:33,504 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 [2020-08-22 05:28:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-22 05:28:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2020-08-22 05:28:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-08-22 05:28:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2020-08-22 05:28:33,543 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 37 [2020-08-22 05:28:33,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:33,544 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2020-08-22 05:28:33,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:28:33,544 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2020-08-22 05:28:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 05:28:33,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:33,546 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] [2020-08-22 05:28:33,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:28:33,546 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2018661528, now seen corresponding path program 1 times [2020-08-22 05:28:33,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:33,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717871907] [2020-08-22 05:28:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:33,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717871907] [2020-08-22 05:28:33,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:33,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:33,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131164989] [2020-08-22 05:28:33,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:33,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:33,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:33,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:33,621 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand 5 states. [2020-08-22 05:28:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:33,861 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2020-08-22 05:28:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:33,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-08-22 05:28:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:33,865 INFO L225 Difference]: With dead ends: 847 [2020-08-22 05:28:33,865 INFO L226 Difference]: Without dead ends: 472 [2020-08-22 05:28:33,867 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 [2020-08-22 05:28:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-22 05:28:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2020-08-22 05:28:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-22 05:28:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 715 transitions. [2020-08-22 05:28:33,889 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 715 transitions. Word has length 49 [2020-08-22 05:28:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:33,889 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 715 transitions. [2020-08-22 05:28:33,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 715 transitions. [2020-08-22 05:28:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 05:28:33,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:33,891 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] [2020-08-22 05:28:33,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:28:33,891 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:33,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1742182651, now seen corresponding path program 1 times [2020-08-22 05:28:33,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:33,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395655215] [2020-08-22 05:28:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:33,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395655215] [2020-08-22 05:28:33,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:33,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:33,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557237067] [2020-08-22 05:28:33,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:33,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:33,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:33,946 INFO L87 Difference]: Start difference. First operand 454 states and 715 transitions. Second operand 5 states. [2020-08-22 05:28:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:34,223 INFO L93 Difference]: Finished difference Result 936 states and 1487 transitions. [2020-08-22 05:28:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:34,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-08-22 05:28:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:34,227 INFO L225 Difference]: With dead ends: 936 [2020-08-22 05:28:34,228 INFO L226 Difference]: Without dead ends: 495 [2020-08-22 05:28:34,229 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 [2020-08-22 05:28:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-22 05:28:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-08-22 05:28:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-08-22 05:28:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 758 transitions. [2020-08-22 05:28:34,256 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 758 transitions. Word has length 50 [2020-08-22 05:28:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:34,256 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 758 transitions. [2020-08-22 05:28:34,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 758 transitions. [2020-08-22 05:28:34,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:28:34,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:34,258 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] [2020-08-22 05:28:34,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:28:34,258 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:34,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:34,259 INFO L82 PathProgramCache]: Analyzing trace with hash 928180771, now seen corresponding path program 1 times [2020-08-22 05:28:34,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:34,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453337915] [2020-08-22 05:28:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:34,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 05:28:34,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453337915] [2020-08-22 05:28:34,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:34,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:34,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34794660] [2020-08-22 05:28:34,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:34,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:34,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:34,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:34,318 INFO L87 Difference]: Start difference. First operand 477 states and 758 transitions. Second operand 5 states. [2020-08-22 05:28:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:34,574 INFO L93 Difference]: Finished difference Result 993 states and 1583 transitions. [2020-08-22 05:28:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:34,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-08-22 05:28:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:34,578 INFO L225 Difference]: With dead ends: 993 [2020-08-22 05:28:34,578 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 05:28:34,580 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 [2020-08-22 05:28:34,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 05:28:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-22 05:28:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 05:28:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 809 transitions. [2020-08-22 05:28:34,605 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 809 transitions. Word has length 61 [2020-08-22 05:28:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:34,605 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 809 transitions. [2020-08-22 05:28:34,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 809 transitions. [2020-08-22 05:28:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 05:28:34,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:34,607 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] [2020-08-22 05:28:34,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:28:34,608 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:34,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:34,608 INFO L82 PathProgramCache]: Analyzing trace with hash 171040523, now seen corresponding path program 1 times [2020-08-22 05:28:34,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:34,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708817222] [2020-08-22 05:28:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 05:28:34,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708817222] [2020-08-22 05:28:34,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:34,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:34,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294970094] [2020-08-22 05:28:34,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:34,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:34,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:34,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:34,668 INFO L87 Difference]: Start difference. First operand 511 states and 809 transitions. Second operand 5 states. [2020-08-22 05:28:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:34,925 INFO L93 Difference]: Finished difference Result 1027 states and 1631 transitions. [2020-08-22 05:28:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:34,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-22 05:28:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:34,930 INFO L225 Difference]: With dead ends: 1027 [2020-08-22 05:28:34,931 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 05:28:34,933 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 [2020-08-22 05:28:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 05:28:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2020-08-22 05:28:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 05:28:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 806 transitions. [2020-08-22 05:28:34,967 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 806 transitions. Word has length 62 [2020-08-22 05:28:34,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:34,968 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 806 transitions. [2020-08-22 05:28:34,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 806 transitions. [2020-08-22 05:28:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 05:28:34,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:34,970 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] [2020-08-22 05:28:34,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 05:28:34,971 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:34,972 INFO L82 PathProgramCache]: Analyzing trace with hash 2117537729, now seen corresponding path program 1 times [2020-08-22 05:28:34,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:34,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922278079] [2020-08-22 05:28:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:35,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 05:28:35,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922278079] [2020-08-22 05:28:35,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:35,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:35,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934918377] [2020-08-22 05:28:35,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:35,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:35,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:35,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:35,039 INFO L87 Difference]: Start difference. First operand 511 states and 806 transitions. Second operand 5 states. [2020-08-22 05:28:35,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:35,366 INFO L93 Difference]: Finished difference Result 1074 states and 1702 transitions. [2020-08-22 05:28:35,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:35,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-08-22 05:28:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:35,372 INFO L225 Difference]: With dead ends: 1074 [2020-08-22 05:28:35,372 INFO L226 Difference]: Without dead ends: 576 [2020-08-22 05:28:35,374 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 [2020-08-22 05:28:35,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-22 05:28:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2020-08-22 05:28:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-08-22 05:28:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 903 transitions. [2020-08-22 05:28:35,403 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 903 transitions. Word has length 62 [2020-08-22 05:28:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:35,404 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 903 transitions. [2020-08-22 05:28:35,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 903 transitions. [2020-08-22 05:28:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 05:28:35,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:35,406 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] [2020-08-22 05:28:35,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 05:28:35,406 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:35,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1816844012, now seen corresponding path program 1 times [2020-08-22 05:28:35,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:35,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719577229] [2020-08-22 05:28:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:35,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719577229] [2020-08-22 05:28:35,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:35,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:35,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650653384] [2020-08-22 05:28:35,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:35,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:35,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:35,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:35,472 INFO L87 Difference]: Start difference. First operand 574 states and 903 transitions. Second operand 5 states. [2020-08-22 05:28:35,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:35,723 INFO L93 Difference]: Finished difference Result 1184 states and 1864 transitions. [2020-08-22 05:28:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:35,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-22 05:28:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:35,728 INFO L225 Difference]: With dead ends: 1184 [2020-08-22 05:28:35,728 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 05:28:35,729 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 [2020-08-22 05:28:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 05:28:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-22 05:28:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 05:28:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 967 transitions. [2020-08-22 05:28:35,762 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 967 transitions. Word has length 84 [2020-08-22 05:28:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:35,762 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 967 transitions. [2020-08-22 05:28:35,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 967 transitions. [2020-08-22 05:28:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 05:28:35,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:35,764 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] [2020-08-22 05:28:35,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 05:28:35,765 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:35,765 INFO L82 PathProgramCache]: Analyzing trace with hash -584276215, now seen corresponding path program 1 times [2020-08-22 05:28:35,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:35,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131630899] [2020-08-22 05:28:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:35,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131630899] [2020-08-22 05:28:35,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:35,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:35,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937046403] [2020-08-22 05:28:35,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:35,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:35,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:35,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:35,839 INFO L87 Difference]: Start difference. First operand 617 states and 967 transitions. Second operand 5 states. [2020-08-22 05:28:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:36,138 INFO L93 Difference]: Finished difference Result 1227 states and 1925 transitions. [2020-08-22 05:28:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:36,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-22 05:28:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:36,142 INFO L225 Difference]: With dead ends: 1227 [2020-08-22 05:28:36,142 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 05:28:36,144 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 [2020-08-22 05:28:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 05:28:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2020-08-22 05:28:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 05:28:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 964 transitions. [2020-08-22 05:28:36,197 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 964 transitions. Word has length 85 [2020-08-22 05:28:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:36,197 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 964 transitions. [2020-08-22 05:28:36,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 964 transitions. [2020-08-22 05:28:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 05:28:36,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:36,200 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] [2020-08-22 05:28:36,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 05:28:36,200 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:36,200 INFO L82 PathProgramCache]: Analyzing trace with hash 220190302, now seen corresponding path program 1 times [2020-08-22 05:28:36,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:36,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703123451] [2020-08-22 05:28:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:36,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 05:28:36,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703123451] [2020-08-22 05:28:36,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:36,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:36,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901383868] [2020-08-22 05:28:36,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:36,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:36,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:36,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:36,256 INFO L87 Difference]: Start difference. First operand 617 states and 964 transitions. Second operand 5 states. [2020-08-22 05:28:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:36,547 INFO L93 Difference]: Finished difference Result 1223 states and 1913 transitions. [2020-08-22 05:28:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:36,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-08-22 05:28:36,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:36,552 INFO L225 Difference]: With dead ends: 1223 [2020-08-22 05:28:36,552 INFO L226 Difference]: Without dead ends: 619 [2020-08-22 05:28:36,553 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 [2020-08-22 05:28:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-08-22 05:28:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-08-22 05:28:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 05:28:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 959 transitions. [2020-08-22 05:28:36,598 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 959 transitions. Word has length 90 [2020-08-22 05:28:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:36,599 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 959 transitions. [2020-08-22 05:28:36,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:36,599 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 959 transitions. [2020-08-22 05:28:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 05:28:36,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:36,602 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] [2020-08-22 05:28:36,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 05:28:36,602 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:36,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073075, now seen corresponding path program 1 times [2020-08-22 05:28:36,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:36,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498288037] [2020-08-22 05:28:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:36,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 05:28:36,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498288037] [2020-08-22 05:28:36,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:36,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:36,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410124340] [2020-08-22 05:28:36,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:36,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:36,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:36,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:36,683 INFO L87 Difference]: Start difference. First operand 617 states and 959 transitions. Second operand 5 states. [2020-08-22 05:28:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:36,906 INFO L93 Difference]: Finished difference Result 1281 states and 1996 transitions. [2020-08-22 05:28:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:36,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-08-22 05:28:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:36,910 INFO L225 Difference]: With dead ends: 1281 [2020-08-22 05:28:36,911 INFO L226 Difference]: Without dead ends: 677 [2020-08-22 05:28:36,914 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 [2020-08-22 05:28:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-22 05:28:36,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-22 05:28:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 05:28:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1002 transitions. [2020-08-22 05:28:36,955 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1002 transitions. Word has length 98 [2020-08-22 05:28:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:36,956 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 1002 transitions. [2020-08-22 05:28:36,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1002 transitions. [2020-08-22 05:28:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-22 05:28:36,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:36,960 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] [2020-08-22 05:28:36,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 05:28:36,960 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:36,961 INFO L82 PathProgramCache]: Analyzing trace with hash -90077499, now seen corresponding path program 1 times [2020-08-22 05:28:36,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:36,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578907235] [2020-08-22 05:28:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 05:28:37,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578907235] [2020-08-22 05:28:37,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:37,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:37,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453185892] [2020-08-22 05:28:37,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:37,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:37,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:37,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:37,047 INFO L87 Difference]: Start difference. First operand 649 states and 1002 transitions. Second operand 5 states. [2020-08-22 05:28:37,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:37,297 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2020-08-22 05:28:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:37,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-08-22 05:28:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:37,301 INFO L225 Difference]: With dead ends: 1313 [2020-08-22 05:28:37,301 INFO L226 Difference]: Without dead ends: 677 [2020-08-22 05:28:37,303 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 [2020-08-22 05:28:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-08-22 05:28:37,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 649. [2020-08-22 05:28:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 05:28:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 996 transitions. [2020-08-22 05:28:37,347 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 996 transitions. Word has length 99 [2020-08-22 05:28:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:37,347 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 996 transitions. [2020-08-22 05:28:37,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 996 transitions. [2020-08-22 05:28:37,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-22 05:28:37,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:37,351 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] [2020-08-22 05:28:37,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 05:28:37,351 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:37,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1708621622, now seen corresponding path program 1 times [2020-08-22 05:28:37,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:37,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976719390] [2020-08-22 05:28:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 05:28:37,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976719390] [2020-08-22 05:28:37,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:37,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:37,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156749072] [2020-08-22 05:28:37,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:37,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:37,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:37,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:37,424 INFO L87 Difference]: Start difference. First operand 649 states and 996 transitions. Second operand 5 states. [2020-08-22 05:28:37,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:37,780 INFO L93 Difference]: Finished difference Result 1349 states and 2073 transitions. [2020-08-22 05:28:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:37,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-08-22 05:28:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:37,787 INFO L225 Difference]: With dead ends: 1349 [2020-08-22 05:28:37,787 INFO L226 Difference]: Without dead ends: 713 [2020-08-22 05:28:37,790 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 [2020-08-22 05:28:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-08-22 05:28:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-08-22 05:28:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-22 05:28:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1072 transitions. [2020-08-22 05:28:37,861 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1072 transitions. Word has length 105 [2020-08-22 05:28:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:37,861 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 1072 transitions. [2020-08-22 05:28:37,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1072 transitions. [2020-08-22 05:28:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-22 05:28:37,865 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:37,866 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] [2020-08-22 05:28:37,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 05:28:37,866 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:37,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:37,867 INFO L82 PathProgramCache]: Analyzing trace with hash 2058755821, now seen corresponding path program 1 times [2020-08-22 05:28:37,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:37,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099307591] [2020-08-22 05:28:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:37,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 05:28:37,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099307591] [2020-08-22 05:28:37,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:37,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:37,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985380107] [2020-08-22 05:28:37,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:37,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:37,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:37,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:37,956 INFO L87 Difference]: Start difference. First operand 701 states and 1072 transitions. Second operand 5 states. [2020-08-22 05:28:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:38,392 INFO L93 Difference]: Finished difference Result 1406 states and 2155 transitions. [2020-08-22 05:28:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:38,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-08-22 05:28:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:38,399 INFO L225 Difference]: With dead ends: 1406 [2020-08-22 05:28:38,399 INFO L226 Difference]: Without dead ends: 714 [2020-08-22 05:28:38,401 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 [2020-08-22 05:28:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-22 05:28:38,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2020-08-22 05:28:38,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 05:28:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1073 transitions. [2020-08-22 05:28:38,481 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1073 transitions. Word has length 106 [2020-08-22 05:28:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:38,482 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1073 transitions. [2020-08-22 05:28:38,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1073 transitions. [2020-08-22 05:28:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-22 05:28:38,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:38,486 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] [2020-08-22 05:28:38,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 05:28:38,487 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash 646120304, now seen corresponding path program 1 times [2020-08-22 05:28:38,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:38,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391230591] [2020-08-22 05:28:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:38,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 05:28:38,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391230591] [2020-08-22 05:28:38,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:38,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:38,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798910270] [2020-08-22 05:28:38,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:38,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:38,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:38,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:38,597 INFO L87 Difference]: Start difference. First operand 702 states and 1073 transitions. Second operand 5 states. [2020-08-22 05:28:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:38,970 INFO L93 Difference]: Finished difference Result 1438 states and 2197 transitions. [2020-08-22 05:28:38,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:38,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-08-22 05:28:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:38,976 INFO L225 Difference]: With dead ends: 1438 [2020-08-22 05:28:38,977 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 05:28:38,983 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 [2020-08-22 05:28:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 05:28:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-22 05:28:39,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 05:28:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1128 transitions. [2020-08-22 05:28:39,036 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1128 transitions. Word has length 117 [2020-08-22 05:28:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:39,036 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1128 transitions. [2020-08-22 05:28:39,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1128 transitions. [2020-08-22 05:28:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-08-22 05:28:39,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:39,039 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] [2020-08-22 05:28:39,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 05:28:39,040 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:39,041 INFO L82 PathProgramCache]: Analyzing trace with hash 820078483, now seen corresponding path program 1 times [2020-08-22 05:28:39,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:39,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433134124] [2020-08-22 05:28:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 05:28:39,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433134124] [2020-08-22 05:28:39,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:39,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:39,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555729688] [2020-08-22 05:28:39,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:39,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:39,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:39,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:39,124 INFO L87 Difference]: Start difference. First operand 743 states and 1128 transitions. Second operand 5 states. [2020-08-22 05:28:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:39,389 INFO L93 Difference]: Finished difference Result 1479 states and 2247 transitions. [2020-08-22 05:28:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:39,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-08-22 05:28:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:39,395 INFO L225 Difference]: With dead ends: 1479 [2020-08-22 05:28:39,395 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 05:28:39,397 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 [2020-08-22 05:28:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 05:28:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 743. [2020-08-22 05:28:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 05:28:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1123 transitions. [2020-08-22 05:28:39,463 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1123 transitions. Word has length 118 [2020-08-22 05:28:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:39,463 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1123 transitions. [2020-08-22 05:28:39,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1123 transitions. [2020-08-22 05:28:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 05:28:39,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:39,468 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] [2020-08-22 05:28:39,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 05:28:39,468 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:39,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1832218007, now seen corresponding path program 1 times [2020-08-22 05:28:39,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:39,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730963617] [2020-08-22 05:28:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:39,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 05:28:39,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730963617] [2020-08-22 05:28:39,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:39,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:39,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619743891] [2020-08-22 05:28:39,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:39,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:39,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:39,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:39,543 INFO L87 Difference]: Start difference. First operand 743 states and 1123 transitions. Second operand 5 states. [2020-08-22 05:28:39,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:39,766 INFO L93 Difference]: Finished difference Result 1515 states and 2290 transitions. [2020-08-22 05:28:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:39,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-08-22 05:28:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:39,771 INFO L225 Difference]: With dead ends: 1515 [2020-08-22 05:28:39,771 INFO L226 Difference]: Without dead ends: 785 [2020-08-22 05:28:39,772 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 [2020-08-22 05:28:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-22 05:28:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-22 05:28:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-22 05:28:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1161 transitions. [2020-08-22 05:28:39,809 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1161 transitions. Word has length 120 [2020-08-22 05:28:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:39,809 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1161 transitions. [2020-08-22 05:28:39,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1161 transitions. [2020-08-22 05:28:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 05:28:39,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:39,812 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] [2020-08-22 05:28:39,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 05:28:39,812 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2144394689, now seen corresponding path program 1 times [2020-08-22 05:28:39,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:39,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817180838] [2020-08-22 05:28:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 05:28:39,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817180838] [2020-08-22 05:28:39,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:39,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:39,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563917260] [2020-08-22 05:28:39,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:39,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:39,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:39,887 INFO L87 Difference]: Start difference. First operand 775 states and 1161 transitions. Second operand 5 states. [2020-08-22 05:28:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:40,172 INFO L93 Difference]: Finished difference Result 1547 states and 2319 transitions. [2020-08-22 05:28:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:40,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-08-22 05:28:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:40,178 INFO L225 Difference]: With dead ends: 1547 [2020-08-22 05:28:40,178 INFO L226 Difference]: Without dead ends: 785 [2020-08-22 05:28:40,180 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 [2020-08-22 05:28:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-08-22 05:28:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 775. [2020-08-22 05:28:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-08-22 05:28:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1152 transitions. [2020-08-22 05:28:40,237 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1152 transitions. Word has length 121 [2020-08-22 05:28:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:40,238 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1152 transitions. [2020-08-22 05:28:40,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1152 transitions. [2020-08-22 05:28:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 05:28:40,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:40,241 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] [2020-08-22 05:28:40,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 05:28:40,242 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:40,243 INFO L82 PathProgramCache]: Analyzing trace with hash -40343791, now seen corresponding path program 1 times [2020-08-22 05:28:40,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:40,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575322536] [2020-08-22 05:28:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-22 05:28:40,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575322536] [2020-08-22 05:28:40,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:40,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:40,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819258420] [2020-08-22 05:28:40,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:40,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:40,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:40,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:40,363 INFO L87 Difference]: Start difference. First operand 775 states and 1152 transitions. Second operand 5 states. [2020-08-22 05:28:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:40,627 INFO L93 Difference]: Finished difference Result 1573 states and 2340 transitions. [2020-08-22 05:28:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:40,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-22 05:28:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:40,632 INFO L225 Difference]: With dead ends: 1573 [2020-08-22 05:28:40,632 INFO L226 Difference]: Without dead ends: 811 [2020-08-22 05:28:40,635 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 [2020-08-22 05:28:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-22 05:28:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-22 05:28:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-22 05:28:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2020-08-22 05:28:40,684 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 142 [2020-08-22 05:28:40,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:40,684 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2020-08-22 05:28:40,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2020-08-22 05:28:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 05:28:40,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:40,688 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] [2020-08-22 05:28:40,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 05:28:40,688 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash -46422775, now seen corresponding path program 1 times [2020-08-22 05:28:40,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:40,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309237758] [2020-08-22 05:28:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:40,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-08-22 05:28:40,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309237758] [2020-08-22 05:28:40,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:40,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:40,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345439250] [2020-08-22 05:28:40,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:40,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:40,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:40,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:40,783 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand 5 states. [2020-08-22 05:28:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:41,095 INFO L93 Difference]: Finished difference Result 1601 states and 2361 transitions. [2020-08-22 05:28:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:41,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-08-22 05:28:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:41,100 INFO L225 Difference]: With dead ends: 1601 [2020-08-22 05:28:41,100 INFO L226 Difference]: Without dead ends: 811 [2020-08-22 05:28:41,102 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 [2020-08-22 05:28:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-08-22 05:28:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 803. [2020-08-22 05:28:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-22 05:28:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1173 transitions. [2020-08-22 05:28:41,147 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1173 transitions. Word has length 143 [2020-08-22 05:28:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:41,147 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1173 transitions. [2020-08-22 05:28:41,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1173 transitions. [2020-08-22 05:28:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 05:28:41,150 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:41,150 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] [2020-08-22 05:28:41,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 05:28:41,150 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:41,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1282567469, now seen corresponding path program 1 times [2020-08-22 05:28:41,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:41,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810151801] [2020-08-22 05:28:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:41,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 05:28:41,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810151801] [2020-08-22 05:28:41,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:41,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:41,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368078480] [2020-08-22 05:28:41,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:41,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:41,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:41,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:41,218 INFO L87 Difference]: Start difference. First operand 803 states and 1173 transitions. Second operand 5 states. [2020-08-22 05:28:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:41,526 INFO L93 Difference]: Finished difference Result 1656 states and 2415 transitions. [2020-08-22 05:28:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:41,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 05:28:41,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:41,531 INFO L225 Difference]: With dead ends: 1656 [2020-08-22 05:28:41,531 INFO L226 Difference]: Without dead ends: 866 [2020-08-22 05:28:41,533 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 [2020-08-22 05:28:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-08-22 05:28:41,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 852. [2020-08-22 05:28:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-08-22 05:28:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1234 transitions. [2020-08-22 05:28:41,582 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1234 transitions. Word has length 146 [2020-08-22 05:28:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:41,582 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1234 transitions. [2020-08-22 05:28:41,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1234 transitions. [2020-08-22 05:28:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 05:28:41,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:41,585 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] [2020-08-22 05:28:41,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 05:28:41,586 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:41,586 INFO L82 PathProgramCache]: Analyzing trace with hash -399456400, now seen corresponding path program 1 times [2020-08-22 05:28:41,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:41,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60240409] [2020-08-22 05:28:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-22 05:28:41,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60240409] [2020-08-22 05:28:41,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:41,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:41,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342753984] [2020-08-22 05:28:41,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:41,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:41,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:41,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:41,652 INFO L87 Difference]: Start difference. First operand 852 states and 1234 transitions. Second operand 5 states. [2020-08-22 05:28:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:41,923 INFO L93 Difference]: Finished difference Result 1705 states and 2473 transitions. [2020-08-22 05:28:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:41,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-08-22 05:28:41,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:41,928 INFO L225 Difference]: With dead ends: 1705 [2020-08-22 05:28:41,928 INFO L226 Difference]: Without dead ends: 850 [2020-08-22 05:28:41,930 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 [2020-08-22 05:28:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-22 05:28:41,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2020-08-22 05:28:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 05:28:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1211 transitions. [2020-08-22 05:28:41,976 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1211 transitions. Word has length 147 [2020-08-22 05:28:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:41,976 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1211 transitions. [2020-08-22 05:28:41,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1211 transitions. [2020-08-22 05:28:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 05:28:41,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:41,979 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] [2020-08-22 05:28:41,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 05:28:41,980 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash 947927939, now seen corresponding path program 1 times [2020-08-22 05:28:41,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:41,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712334423] [2020-08-22 05:28:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-22 05:28:42,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712334423] [2020-08-22 05:28:42,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:42,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:42,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508290849] [2020-08-22 05:28:42,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:42,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:42,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:42,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:42,041 INFO L87 Difference]: Start difference. First operand 836 states and 1211 transitions. Second operand 5 states. [2020-08-22 05:28:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:42,325 INFO L93 Difference]: Finished difference Result 1671 states and 2423 transitions. [2020-08-22 05:28:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:42,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-22 05:28:42,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:42,330 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 05:28:42,330 INFO L226 Difference]: Without dead ends: 848 [2020-08-22 05:28:42,333 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 [2020-08-22 05:28:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-08-22 05:28:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 836. [2020-08-22 05:28:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-22 05:28:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1204 transitions. [2020-08-22 05:28:42,401 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1204 transitions. Word has length 151 [2020-08-22 05:28:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:42,401 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1204 transitions. [2020-08-22 05:28:42,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1204 transitions. [2020-08-22 05:28:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:28:42,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:42,405 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] [2020-08-22 05:28:42,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 05:28:42,405 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:42,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:42,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1674902650, now seen corresponding path program 1 times [2020-08-22 05:28:42,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:42,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753877612] [2020-08-22 05:28:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:42,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-08-22 05:28:42,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753877612] [2020-08-22 05:28:42,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:42,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:28:42,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313378341] [2020-08-22 05:28:42,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:28:42,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:42,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:28:42,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:28:42,528 INFO L87 Difference]: Start difference. First operand 836 states and 1204 transitions. Second operand 5 states. [2020-08-22 05:28:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:42,814 INFO L93 Difference]: Finished difference Result 1671 states and 2409 transitions. [2020-08-22 05:28:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:28:42,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 05:28:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:42,819 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 05:28:42,819 INFO L226 Difference]: Without dead ends: 831 [2020-08-22 05:28:42,822 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 [2020-08-22 05:28:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-08-22 05:28:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 819. [2020-08-22 05:28:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-22 05:28:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1175 transitions. [2020-08-22 05:28:42,870 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1175 transitions. Word has length 152 [2020-08-22 05:28:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:42,871 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1175 transitions. [2020-08-22 05:28:42,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:28:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1175 transitions. [2020-08-22 05:28:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-22 05:28:42,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:42,873 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] [2020-08-22 05:28:42,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 05:28:42,874 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:42,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1165219020, now seen corresponding path program 1 times [2020-08-22 05:28:42,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:42,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479067498] [2020-08-22 05:28:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:42,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-22 05:28:42,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479067498] [2020-08-22 05:28:42,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:42,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:28:42,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813601028] [2020-08-22 05:28:42,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:28:42,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:42,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:28:42,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:28:42,947 INFO L87 Difference]: Start difference. First operand 819 states and 1175 transitions. Second operand 3 states. [2020-08-22 05:28:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:43,031 INFO L93 Difference]: Finished difference Result 2417 states and 3465 transitions. [2020-08-22 05:28:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:28:43,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-22 05:28:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:43,039 INFO L225 Difference]: With dead ends: 2417 [2020-08-22 05:28:43,039 INFO L226 Difference]: Without dead ends: 1611 [2020-08-22 05:28:43,041 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 [2020-08-22 05:28:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-08-22 05:28:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 821. [2020-08-22 05:28:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-22 05:28:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1177 transitions. [2020-08-22 05:28:43,093 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1177 transitions. Word has length 159 [2020-08-22 05:28:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:43,093 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 1177 transitions. [2020-08-22 05:28:43,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:28:43,093 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1177 transitions. [2020-08-22 05:28:43,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-22 05:28:43,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:43,096 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] [2020-08-22 05:28:43,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 05:28:43,096 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2119159178, now seen corresponding path program 1 times [2020-08-22 05:28:43,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:43,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993674997] [2020-08-22 05:28:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-22 05:28:43,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993674997] [2020-08-22 05:28:43,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:43,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:28:43,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067620399] [2020-08-22 05:28:43,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:28:43,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:43,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:28:43,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:28:43,175 INFO L87 Difference]: Start difference. First operand 821 states and 1177 transitions. Second operand 3 states. [2020-08-22 05:28:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:43,302 INFO L93 Difference]: Finished difference Result 2416 states and 3461 transitions. [2020-08-22 05:28:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:28:43,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-08-22 05:28:43,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:43,313 INFO L225 Difference]: With dead ends: 2416 [2020-08-22 05:28:43,313 INFO L226 Difference]: Without dead ends: 1608 [2020-08-22 05:28:43,315 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 [2020-08-22 05:28:43,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-08-22 05:28:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1606. [2020-08-22 05:28:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-22 05:28:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2297 transitions. [2020-08-22 05:28:43,432 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2297 transitions. Word has length 159 [2020-08-22 05:28:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:43,433 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2297 transitions. [2020-08-22 05:28:43,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:28:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2297 transitions. [2020-08-22 05:28:43,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 05:28:43,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:43,437 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] [2020-08-22 05:28:43,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 05:28:43,438 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:43,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:43,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1294690318, now seen corresponding path program 1 times [2020-08-22 05:28:43,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:43,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499064923] [2020-08-22 05:28:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-08-22 05:28:43,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499064923] [2020-08-22 05:28:43,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:43,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:28:43,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118538721] [2020-08-22 05:28:43,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:28:43,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:43,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:28:43,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:28:43,546 INFO L87 Difference]: Start difference. First operand 1606 states and 2297 transitions. Second operand 3 states. [2020-08-22 05:28:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:43,863 INFO L93 Difference]: Finished difference Result 4752 states and 6785 transitions. [2020-08-22 05:28:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:28:43,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-08-22 05:28:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:43,880 INFO L225 Difference]: With dead ends: 4752 [2020-08-22 05:28:43,881 INFO L226 Difference]: Without dead ends: 3159 [2020-08-22 05:28:43,885 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 [2020-08-22 05:28:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-08-22 05:28:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 1606. [2020-08-22 05:28:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-22 05:28:44,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2293 transitions. [2020-08-22 05:28:44,058 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2293 transitions. Word has length 161 [2020-08-22 05:28:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:44,058 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2293 transitions. [2020-08-22 05:28:44,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:28:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2293 transitions. [2020-08-22 05:28:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 05:28:44,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:44,061 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] [2020-08-22 05:28:44,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 05:28:44,062 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:44,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:44,062 INFO L82 PathProgramCache]: Analyzing trace with hash -179508653, now seen corresponding path program 1 times [2020-08-22 05:28:44,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:44,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314122374] [2020-08-22 05:28:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-22 05:28:44,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314122374] [2020-08-22 05:28:44,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:44,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:28:44,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528001417] [2020-08-22 05:28:44,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:28:44,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:44,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:28:44,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:28:44,157 INFO L87 Difference]: Start difference. First operand 1606 states and 2293 transitions. Second operand 3 states. [2020-08-22 05:28:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:44,535 INFO L93 Difference]: Finished difference Result 4792 states and 6845 transitions. [2020-08-22 05:28:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:28:44,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2020-08-22 05:28:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:44,566 INFO L225 Difference]: With dead ends: 4792 [2020-08-22 05:28:44,566 INFO L226 Difference]: Without dead ends: 3199 [2020-08-22 05:28:44,573 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 [2020-08-22 05:28:44,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-08-22 05:28:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3197. [2020-08-22 05:28:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-08-22 05:28:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4493 transitions. [2020-08-22 05:28:44,791 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4493 transitions. Word has length 162 [2020-08-22 05:28:44,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:44,792 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 4493 transitions. [2020-08-22 05:28:44,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:28:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4493 transitions. [2020-08-22 05:28:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 05:28:44,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:44,796 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] [2020-08-22 05:28:44,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-22 05:28:44,796 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:44,797 INFO L82 PathProgramCache]: Analyzing trace with hash 774431505, now seen corresponding path program 1 times [2020-08-22 05:28:44,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:44,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431418535] [2020-08-22 05:28:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:28:44,839 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:28:44,840 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:28:44,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-22 05:28:44,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:28:44 BoogieIcfgContainer [2020-08-22 05:28:44,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:28:44,917 INFO L168 Benchmark]: Toolchain (without parser) took 16673.23 ms. Allocated memory was 140.0 MB in the beginning and 468.7 MB in the end (delta: 328.7 MB). Free memory was 103.3 MB in the beginning and 198.3 MB in the end (delta: -95.0 MB). Peak memory consumption was 233.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:44,918 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:28:44,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.77 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 177.8 MB in the end (delta: -74.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:44,920 INFO L168 Benchmark]: Boogie Preprocessor took 64.76 ms. Allocated memory is still 203.4 MB. Free memory was 177.8 MB in the beginning and 175.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:44,920 INFO L168 Benchmark]: RCFGBuilder took 989.42 ms. Allocated memory is still 203.4 MB. Free memory was 175.0 MB in the beginning and 116.8 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:44,921 INFO L168 Benchmark]: TraceAbstraction took 15094.94 ms. Allocated memory was 203.4 MB in the beginning and 468.7 MB in the end (delta: 265.3 MB). Free memory was 116.8 MB in the beginning and 198.3 MB in the end (delta: -81.5 MB). Peak memory consumption was 183.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:44,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 518.77 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 177.8 MB in the end (delta: -74.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.76 ms. Allocated memory is still 203.4 MB. Free memory was 177.8 MB in the beginning and 175.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 989.42 ms. Allocated memory is still 203.4 MB. Free memory was 175.0 MB in the beginning and 116.8 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15094.94 ms. Allocated memory was 203.4 MB in the beginning and 468.7 MB in the end (delta: 265.3 MB). Free memory was 116.8 MB in the beginning and 198.3 MB in the end (delta: -81.5 MB). Peak memory consumption was 183.8 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: 14.9s, OverallIterations: 35, TraceHistogramMax: 6, AutomataDifference: 9.7s, 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, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s 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: 1.7s AutomataMinimizationTime, 34 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.7s 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...