/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:08:05,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:08:05,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:08:05,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:08:05,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:08:05,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:08:05,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:08:05,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:08:05,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:08:05,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:08:05,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:08:05,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:08:05,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:08:05,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:08:05,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:08:05,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:08:05,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:08:05,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:08:05,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:08:05,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:08:05,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:08:05,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:08:05,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:08:05,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:08:05,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:08:05,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:08:05,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:08:05,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:08:05,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:08:05,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:08:05,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:08:05,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:08:05,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:08:05,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:08:05,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:08:05,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:08:05,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:08:05,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:08:05,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:08:05,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:08:05,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:08:05,849 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 [2020-10-14 10:08:05,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:08:05,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:08:05,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:08:05,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:08:05,878 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:08:05,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:08:05,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:08:05,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:08:05,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:08:05,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:08:05,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:08:05,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:08:05,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:08:05,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:08:05,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:08:05,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:08:05,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:08:05,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:08:05,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:08:05,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:08:05,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:08:05,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:08:05,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:08:05,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:08:05,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:08:05,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:08:05,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:08:05,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:08:05,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:08:05,889 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:08:06,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:08:06,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:08:06,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:08:06,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:08:06,221 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:08:06,222 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_11.cil.c [2020-10-14 10:08:06,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9be0f2b9/f14259c2d75c4390aa029f0f1276e607/FLAG4df88c85b [2020-10-14 10:08:06,755 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:08:06,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_11.cil.c [2020-10-14 10:08:06,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9be0f2b9/f14259c2d75c4390aa029f0f1276e607/FLAG4df88c85b [2020-10-14 10:08:07,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9be0f2b9/f14259c2d75c4390aa029f0f1276e607 [2020-10-14 10:08:07,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:08:07,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:08:07,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:08:07,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:08:07,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:08:07,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cc86df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07, skipping insertion in model container [2020-10-14 10:08:07,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:08:07,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:08:07,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:08:07,524 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:08:07,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:08:07,739 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:08:07,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07 WrapperNode [2020-10-14 10:08:07,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:08:07,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:08:07,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:08:07,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:08:07,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (1/1) ... [2020-10-14 10:08:07,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:08:07,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:08:07,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:08:07,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:08:07,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (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 [2020-10-14 10:08:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:08:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:08:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:08:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:08:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:08:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:08:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:08:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:08:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:08:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:08:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:08:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:08:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:08:08,122 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:08:08,636 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-14 10:08:08,636 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-14 10:08:08,648 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:08:08,648 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:08:08,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:08 BoogieIcfgContainer [2020-10-14 10:08:08,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:08:08,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:08:08,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:08:08,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:08:08,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:08:07" (1/3) ... [2020-10-14 10:08:08,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664ed3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:08, skipping insertion in model container [2020-10-14 10:08:08,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:07" (2/3) ... [2020-10-14 10:08:08,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664ed3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:08, skipping insertion in model container [2020-10-14 10:08:08,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:08" (3/3) ... [2020-10-14 10:08:08,664 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2020-10-14 10:08:08,676 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:08:08,686 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:08:08,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:08:08,730 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:08:08,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:08:08,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:08:08,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:08:08,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:08:08,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:08:08,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:08:08,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:08:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-14 10:08:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 10:08:08,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:08,768 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] [2020-10-14 10:08:08,769 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:08,775 INFO L82 PathProgramCache]: Analyzing trace with hash -904015367, now seen corresponding path program 1 times [2020-10-14 10:08:08,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:08,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110214325] [2020-10-14 10:08:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:09,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:10,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:10,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 10:08:10,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1539 [2020-10-14 10:08:10,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:10,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 10:08:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:08:10,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:08:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:10,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:10,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:10,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:10,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:10,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:10,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:10,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:10,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:10,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110214325] [2020-10-14 10:08:10,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:10,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:10,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48827683] [2020-10-14 10:08:10,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:10,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:10,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:10,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:10,587 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 3 states. [2020-10-14 10:08:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:10,730 INFO L93 Difference]: Finished difference Result 436 states and 744 transitions. [2020-10-14 10:08:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:10,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 10:08:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:10,775 INFO L225 Difference]: With dead ends: 436 [2020-10-14 10:08:10,775 INFO L226 Difference]: Without dead ends: 265 [2020-10-14 10:08:10,786 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 [2020-10-14 10:08:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-14 10:08:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2020-10-14 10:08:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-14 10:08:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 406 transitions. [2020-10-14 10:08:10,926 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 406 transitions. Word has length 31 [2020-10-14 10:08:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:10,926 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 406 transitions. [2020-10-14 10:08:10,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 406 transitions. [2020-10-14 10:08:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 10:08:10,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:10,931 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] [2020-10-14 10:08:10,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:08:10,932 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:10,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:10,932 INFO L82 PathProgramCache]: Analyzing trace with hash 19359095, now seen corresponding path program 1 times [2020-10-14 10:08:10,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:10,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332738192] [2020-10-14 10:08:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:11,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 10:08:11,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-14 10:08:11,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:11,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 10:08:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:08:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 10:08:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:11,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:11,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:11,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:11,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:11,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:11,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:11,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:08:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:11,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332738192] [2020-10-14 10:08:11,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:11,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:11,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180259041] [2020-10-14 10:08:11,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:11,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:11,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:11,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:11,619 INFO L87 Difference]: Start difference. First operand 263 states and 406 transitions. Second operand 3 states. [2020-10-14 10:08:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:11,952 INFO L93 Difference]: Finished difference Result 624 states and 992 transitions. [2020-10-14 10:08:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:11,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 10:08:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:11,955 INFO L225 Difference]: With dead ends: 624 [2020-10-14 10:08:11,955 INFO L226 Difference]: Without dead ends: 351 [2020-10-14 10:08:11,958 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 [2020-10-14 10:08:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-14 10:08:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2020-10-14 10:08:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-14 10:08:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 512 transitions. [2020-10-14 10:08:11,976 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 512 transitions. Word has length 32 [2020-10-14 10:08:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:11,976 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 512 transitions. [2020-10-14 10:08:11,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 512 transitions. [2020-10-14 10:08:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 10:08:11,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:11,980 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] [2020-10-14 10:08:11,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:08:11,982 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash 918107854, now seen corresponding path program 1 times [2020-10-14 10:08:11,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:11,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237735730] [2020-10-14 10:08:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 10:08:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:08:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-14 10:08:12,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:12,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 10:08:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:08:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:12,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:12,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:12,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:12,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:08:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:12,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237735730] [2020-10-14 10:08:12,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:12,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:12,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453362381] [2020-10-14 10:08:12,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:12,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:12,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:12,974 INFO L87 Difference]: Start difference. First operand 349 states and 512 transitions. Second operand 3 states. [2020-10-14 10:08:13,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:13,266 INFO L93 Difference]: Finished difference Result 780 states and 1182 transitions. [2020-10-14 10:08:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:13,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 10:08:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:13,271 INFO L225 Difference]: With dead ends: 780 [2020-10-14 10:08:13,271 INFO L226 Difference]: Without dead ends: 421 [2020-10-14 10:08:13,274 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 [2020-10-14 10:08:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-14 10:08:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 393. [2020-10-14 10:08:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-14 10:08:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 580 transitions. [2020-10-14 10:08:13,314 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 580 transitions. Word has length 33 [2020-10-14 10:08:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:13,315 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 580 transitions. [2020-10-14 10:08:13,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 580 transitions. [2020-10-14 10:08:13,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 10:08:13,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:13,329 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] [2020-10-14 10:08:13,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:08:13,330 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:13,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1606161856, now seen corresponding path program 1 times [2020-10-14 10:08:13,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:13,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734052653] [2020-10-14 10:08:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:13,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 10:08:13,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-14 10:08:13,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:13,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:08:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:08:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:13,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:13,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:13,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:13,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:13,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:13,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:13,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:13,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734052653] [2020-10-14 10:08:13,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:13,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:13,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827953177] [2020-10-14 10:08:13,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:13,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:13,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:13,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:13,722 INFO L87 Difference]: Start difference. First operand 393 states and 580 transitions. Second operand 3 states. [2020-10-14 10:08:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:13,963 INFO L93 Difference]: Finished difference Result 874 states and 1330 transitions. [2020-10-14 10:08:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:13,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-14 10:08:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:13,967 INFO L225 Difference]: With dead ends: 874 [2020-10-14 10:08:13,967 INFO L226 Difference]: Without dead ends: 471 [2020-10-14 10:08:13,969 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 [2020-10-14 10:08:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-14 10:08:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 439. [2020-10-14 10:08:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-14 10:08:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 656 transitions. [2020-10-14 10:08:13,996 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 656 transitions. Word has length 36 [2020-10-14 10:08:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:13,996 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 656 transitions. [2020-10-14 10:08:13,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 656 transitions. [2020-10-14 10:08:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 10:08:14,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:14,000 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] [2020-10-14 10:08:14,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:08:14,000 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:14,001 INFO L82 PathProgramCache]: Analyzing trace with hash 458960344, now seen corresponding path program 1 times [2020-10-14 10:08:14,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:14,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142418629] [2020-10-14 10:08:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 10:08:14,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:08:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-14 10:08:14,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:14,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 10:08:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 10:08:14,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:14,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:14,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:14,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:14,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:14,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:14,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:08:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:14,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142418629] [2020-10-14 10:08:14,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:14,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:14,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280608698] [2020-10-14 10:08:14,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:14,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:14,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:14,779 INFO L87 Difference]: Start difference. First operand 439 states and 656 transitions. Second operand 3 states. [2020-10-14 10:08:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:14,832 INFO L93 Difference]: Finished difference Result 1289 states and 1932 transitions. [2020-10-14 10:08:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:14,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-10-14 10:08:14,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:14,840 INFO L225 Difference]: With dead ends: 1289 [2020-10-14 10:08:14,840 INFO L226 Difference]: Without dead ends: 864 [2020-10-14 10:08:14,843 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 [2020-10-14 10:08:14,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-10-14 10:08:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 862. [2020-10-14 10:08:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-14 10:08:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1285 transitions. [2020-10-14 10:08:14,874 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1285 transitions. Word has length 41 [2020-10-14 10:08:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:14,875 INFO L479 AbstractCegarLoop]: Abstraction has 862 states and 1285 transitions. [2020-10-14 10:08:14,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1285 transitions. [2020-10-14 10:08:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 10:08:14,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:14,880 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] [2020-10-14 10:08:14,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:08:14,880 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:14,881 INFO L82 PathProgramCache]: Analyzing trace with hash 892328388, now seen corresponding path program 1 times [2020-10-14 10:08:14,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:14,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389155584] [2020-10-14 10:08:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 10:08:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-14 10:08:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:15,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:08:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:08:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:15,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:15,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:15,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:15,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:15,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389155584] [2020-10-14 10:08:15,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:15,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:15,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119431181] [2020-10-14 10:08:15,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:15,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:15,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:15,419 INFO L87 Difference]: Start difference. First operand 862 states and 1285 transitions. Second operand 3 states. [2020-10-14 10:08:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:15,694 INFO L93 Difference]: Finished difference Result 1950 states and 2984 transitions. [2020-10-14 10:08:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:15,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-10-14 10:08:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:15,706 INFO L225 Difference]: With dead ends: 1950 [2020-10-14 10:08:15,707 INFO L226 Difference]: Without dead ends: 1054 [2020-10-14 10:08:15,710 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 [2020-10-14 10:08:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-14 10:08:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 974. [2020-10-14 10:08:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2020-10-14 10:08:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1473 transitions. [2020-10-14 10:08:15,745 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1473 transitions. Word has length 41 [2020-10-14 10:08:15,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:15,746 INFO L479 AbstractCegarLoop]: Abstraction has 974 states and 1473 transitions. [2020-10-14 10:08:15,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1473 transitions. [2020-10-14 10:08:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 10:08:15,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:15,750 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] [2020-10-14 10:08:15,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:08:15,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:15,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:15,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1534522096, now seen corresponding path program 1 times [2020-10-14 10:08:15,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:15,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136155530] [2020-10-14 10:08:15,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:16,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 10:08:16,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:16,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-14 10:08:16,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:16,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 10:08:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:08:16,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:16,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:16,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:16,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:16,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:16,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:08:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:16,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136155530] [2020-10-14 10:08:16,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:16,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:16,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378956119] [2020-10-14 10:08:16,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:16,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:16,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:16,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:16,173 INFO L87 Difference]: Start difference. First operand 974 states and 1473 transitions. Second operand 3 states. [2020-10-14 10:08:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:16,407 INFO L93 Difference]: Finished difference Result 2120 states and 3273 transitions. [2020-10-14 10:08:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:16,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-10-14 10:08:16,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:16,414 INFO L225 Difference]: With dead ends: 2120 [2020-10-14 10:08:16,414 INFO L226 Difference]: Without dead ends: 1160 [2020-10-14 10:08:16,417 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 [2020-10-14 10:08:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2020-10-14 10:08:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1138. [2020-10-14 10:08:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-10-14 10:08:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1673 transitions. [2020-10-14 10:08:16,474 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1673 transitions. Word has length 42 [2020-10-14 10:08:16,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:16,474 INFO L479 AbstractCegarLoop]: Abstraction has 1138 states and 1673 transitions. [2020-10-14 10:08:16,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1673 transitions. [2020-10-14 10:08:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 10:08:16,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:16,476 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] [2020-10-14 10:08:16,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:08:16,477 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:16,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1013609242, now seen corresponding path program 1 times [2020-10-14 10:08:16,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:16,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960695766] [2020-10-14 10:08:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:16,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:16,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 10:08:16,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:16,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-14 10:08:16,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:16,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 10:08:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:08:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:16,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:16,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:16,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:16,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:16,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:16,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:16,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960695766] [2020-10-14 10:08:16,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:16,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:16,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065347151] [2020-10-14 10:08:16,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:16,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:16,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:16,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:16,898 INFO L87 Difference]: Start difference. First operand 1138 states and 1673 transitions. Second operand 3 states. [2020-10-14 10:08:17,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:17,134 INFO L93 Difference]: Finished difference Result 2454 states and 3680 transitions. [2020-10-14 10:08:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:17,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-14 10:08:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:17,141 INFO L225 Difference]: With dead ends: 2454 [2020-10-14 10:08:17,141 INFO L226 Difference]: Without dead ends: 1282 [2020-10-14 10:08:17,144 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 [2020-10-14 10:08:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2020-10-14 10:08:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1262. [2020-10-14 10:08:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1262 states. [2020-10-14 10:08:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1889 transitions. [2020-10-14 10:08:17,179 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1889 transitions. Word has length 43 [2020-10-14 10:08:17,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:17,180 INFO L479 AbstractCegarLoop]: Abstraction has 1262 states and 1889 transitions. [2020-10-14 10:08:17,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:17,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1889 transitions. [2020-10-14 10:08:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 10:08:17,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:17,182 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] [2020-10-14 10:08:17,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:08:17,183 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:17,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:17,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1546892612, now seen corresponding path program 1 times [2020-10-14 10:08:17,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:17,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589317703] [2020-10-14 10:08:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:17,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:17,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 10:08:17,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:17,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 10:08:17,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:17,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 10:08:17,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 10:08:17,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:17,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:17,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:17,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:17,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:17,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:17,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:17,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:17,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:17,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:17,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:17,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589317703] [2020-10-14 10:08:17,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:17,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:17,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331590770] [2020-10-14 10:08:17,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:17,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:17,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:17,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:17,565 INFO L87 Difference]: Start difference. First operand 1262 states and 1889 transitions. Second operand 5 states. [2020-10-14 10:08:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:17,901 INFO L93 Difference]: Finished difference Result 2738 states and 4148 transitions. [2020-10-14 10:08:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:17,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-14 10:08:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:17,912 INFO L225 Difference]: With dead ends: 2738 [2020-10-14 10:08:17,913 INFO L226 Difference]: Without dead ends: 1446 [2020-10-14 10:08:17,918 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 [2020-10-14 10:08:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2020-10-14 10:08:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1394. [2020-10-14 10:08:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2020-10-14 10:08:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2077 transitions. [2020-10-14 10:08:17,981 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2077 transitions. Word has length 48 [2020-10-14 10:08:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:17,982 INFO L479 AbstractCegarLoop]: Abstraction has 1394 states and 2077 transitions. [2020-10-14 10:08:17,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2077 transitions. [2020-10-14 10:08:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 10:08:17,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:17,985 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, 1] [2020-10-14 10:08:17,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:08:17,985 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:17,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1546694064, now seen corresponding path program 1 times [2020-10-14 10:08:17,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:17,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425757248] [2020-10-14 10:08:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 10:08:18,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 10:08:18,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:08:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 10:08:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:08:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:18,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:18,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:18,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:08:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:08:18,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425757248] [2020-10-14 10:08:18,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:18,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:08:18,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269416934] [2020-10-14 10:08:18,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:08:18,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:18,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:08:18,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:08:18,253 INFO L87 Difference]: Start difference. First operand 1394 states and 2077 transitions. Second operand 6 states. [2020-10-14 10:08:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:18,589 INFO L93 Difference]: Finished difference Result 3342 states and 5038 transitions. [2020-10-14 10:08:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:08:18,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-14 10:08:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:18,599 INFO L225 Difference]: With dead ends: 3342 [2020-10-14 10:08:18,599 INFO L226 Difference]: Without dead ends: 1868 [2020-10-14 10:08:18,602 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 [2020-10-14 10:08:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2020-10-14 10:08:18,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1678. [2020-10-14 10:08:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1678 states. [2020-10-14 10:08:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2473 transitions. [2020-10-14 10:08:18,669 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2473 transitions. Word has length 51 [2020-10-14 10:08:18,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:18,670 INFO L479 AbstractCegarLoop]: Abstraction has 1678 states and 2473 transitions. [2020-10-14 10:08:18,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:08:18,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2473 transitions. [2020-10-14 10:08:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 10:08:18,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:18,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 10:08:18,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:08:18,674 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:18,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1688403595, now seen corresponding path program 1 times [2020-10-14 10:08:18,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:18,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796414934] [2020-10-14 10:08:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 10:08:18,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:08:18,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 10:08:18,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 10:08:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:08:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:18,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:08:18,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:18,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:18,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:08:18,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796414934] [2020-10-14 10:08:18,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:18,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:18,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649794206] [2020-10-14 10:08:18,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:18,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:18,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:18,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:18,916 INFO L87 Difference]: Start difference. First operand 1678 states and 2473 transitions. Second operand 3 states. [2020-10-14 10:08:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:19,051 INFO L93 Difference]: Finished difference Result 3344 states and 4937 transitions. [2020-10-14 10:08:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:19,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-10-14 10:08:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:19,071 INFO L225 Difference]: With dead ends: 3344 [2020-10-14 10:08:19,071 INFO L226 Difference]: Without dead ends: 2511 [2020-10-14 10:08:19,076 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 [2020-10-14 10:08:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-10-14 10:08:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2509. [2020-10-14 10:08:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2509 states. [2020-10-14 10:08:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3700 transitions. [2020-10-14 10:08:19,229 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3700 transitions. Word has length 88 [2020-10-14 10:08:19,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:19,230 INFO L479 AbstractCegarLoop]: Abstraction has 2509 states and 3700 transitions. [2020-10-14 10:08:19,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3700 transitions. [2020-10-14 10:08:19,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 10:08:19,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:19,250 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-14 10:08:19,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:08:19,250 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:19,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:19,250 INFO L82 PathProgramCache]: Analyzing trace with hash -145734077, now seen corresponding path program 1 times [2020-10-14 10:08:19,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:19,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067598937] [2020-10-14 10:08:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 10:08:20,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:08:20,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-14 10:08:20,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:08:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:08:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:20,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:20,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:20,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:20,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:20,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:20,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 10:08:20,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067598937] [2020-10-14 10:08:20,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:20,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:20,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742178878] [2020-10-14 10:08:20,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:20,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:20,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:20,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:20,349 INFO L87 Difference]: Start difference. First operand 2509 states and 3700 transitions. Second operand 3 states. [2020-10-14 10:08:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:20,623 INFO L93 Difference]: Finished difference Result 5160 states and 7604 transitions. [2020-10-14 10:08:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:20,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-10-14 10:08:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:20,637 INFO L225 Difference]: With dead ends: 5160 [2020-10-14 10:08:20,637 INFO L226 Difference]: Without dead ends: 2587 [2020-10-14 10:08:20,647 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 [2020-10-14 10:08:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2020-10-14 10:08:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2509. [2020-10-14 10:08:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2509 states. [2020-10-14 10:08:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3550 transitions. [2020-10-14 10:08:20,738 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3550 transitions. Word has length 107 [2020-10-14 10:08:20,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:20,739 INFO L479 AbstractCegarLoop]: Abstraction has 2509 states and 3550 transitions. [2020-10-14 10:08:20,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3550 transitions. [2020-10-14 10:08:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 10:08:20,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:20,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-10-14 10:08:20,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:08:20,745 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:20,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:20,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2128346520, now seen corresponding path program 1 times [2020-10-14 10:08:20,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:20,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696928131] [2020-10-14 10:08:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 10:08:20,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 10:08:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 10:08:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:08:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:20,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:20,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:20,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:20,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:20,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:08:20,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696928131] [2020-10-14 10:08:20,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:20,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:20,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033581566] [2020-10-14 10:08:20,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:20,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:20,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:20,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:20,894 INFO L87 Difference]: Start difference. First operand 2509 states and 3550 transitions. Second operand 3 states. [2020-10-14 10:08:20,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:20,979 INFO L93 Difference]: Finished difference Result 3344 states and 4733 transitions. [2020-10-14 10:08:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:20,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-10-14 10:08:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:20,995 INFO L225 Difference]: With dead ends: 3344 [2020-10-14 10:08:20,996 INFO L226 Difference]: Without dead ends: 3342 [2020-10-14 10:08:21,002 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 [2020-10-14 10:08:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2020-10-14 10:08:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 3340. [2020-10-14 10:08:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3340 states. [2020-10-14 10:08:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4729 transitions. [2020-10-14 10:08:21,169 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4729 transitions. Word has length 129 [2020-10-14 10:08:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:21,169 INFO L479 AbstractCegarLoop]: Abstraction has 3340 states and 4729 transitions. [2020-10-14 10:08:21,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4729 transitions. [2020-10-14 10:08:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 10:08:21,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:21,175 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 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] [2020-10-14 10:08:21,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:08:21,176 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:21,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1614151051, now seen corresponding path program 1 times [2020-10-14 10:08:21,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:21,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311818951] [2020-10-14 10:08:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:23,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:23,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 10:08:23,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:08:23,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2077 [2020-10-14 10:08:23,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:23,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 10:08:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:08:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:23,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:23,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:23,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:23,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:23,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:08:23,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:23,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:23,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:23,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 10:08:23,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311818951] [2020-10-14 10:08:23,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:23,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:23,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067555424] [2020-10-14 10:08:23,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:23,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:23,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:23,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:23,328 INFO L87 Difference]: Start difference. First operand 3340 states and 4729 transitions. Second operand 3 states. [2020-10-14 10:08:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:23,638 INFO L93 Difference]: Finished difference Result 7258 states and 10197 transitions. [2020-10-14 10:08:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:23,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-10-14 10:08:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:23,657 INFO L225 Difference]: With dead ends: 7258 [2020-10-14 10:08:23,658 INFO L226 Difference]: Without dead ends: 3908 [2020-10-14 10:08:23,667 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 [2020-10-14 10:08:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2020-10-14 10:08:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3740. [2020-10-14 10:08:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3740 states. [2020-10-14 10:08:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 5217 transitions. [2020-10-14 10:08:23,832 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 5217 transitions. Word has length 143 [2020-10-14 10:08:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:23,832 INFO L479 AbstractCegarLoop]: Abstraction has 3740 states and 5217 transitions. [2020-10-14 10:08:23,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 5217 transitions. [2020-10-14 10:08:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 10:08:23,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:23,841 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:23,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:08:23,841 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash -470218098, now seen corresponding path program 1 times [2020-10-14 10:08:23,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:23,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458915316] [2020-10-14 10:08:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:23,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:25,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:25,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 10:08:25,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:08:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-14 10:08:25,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:25,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 10:08:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:08:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:25,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:25,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:25,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:25,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:25,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:25,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 10:08:25,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458915316] [2020-10-14 10:08:25,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:25,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:25,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986487049] [2020-10-14 10:08:25,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:25,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:25,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:25,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:25,706 INFO L87 Difference]: Start difference. First operand 3740 states and 5217 transitions. Second operand 3 states. [2020-10-14 10:08:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:25,964 INFO L93 Difference]: Finished difference Result 7912 states and 11014 transitions. [2020-10-14 10:08:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:25,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-10-14 10:08:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:26,005 INFO L225 Difference]: With dead ends: 7912 [2020-10-14 10:08:26,006 INFO L226 Difference]: Without dead ends: 4170 [2020-10-14 10:08:26,016 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 [2020-10-14 10:08:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2020-10-14 10:08:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3972. [2020-10-14 10:08:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3972 states. [2020-10-14 10:08:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 5545 transitions. [2020-10-14 10:08:26,161 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 5545 transitions. Word has length 170 [2020-10-14 10:08:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:26,162 INFO L479 AbstractCegarLoop]: Abstraction has 3972 states and 5545 transitions. [2020-10-14 10:08:26,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 5545 transitions. [2020-10-14 10:08:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 10:08:26,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:26,173 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2020-10-14 10:08:26,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:08:26,174 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1238337570, now seen corresponding path program 1 times [2020-10-14 10:08:26,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:26,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508992258] [2020-10-14 10:08:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 10:08:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:08:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1161 [2020-10-14 10:08:27,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:27,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 10:08:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 10:08:27,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:27,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:27,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:27,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:27,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:08:27,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:27,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 10:08:27,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508992258] [2020-10-14 10:08:27,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:27,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:27,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320297795] [2020-10-14 10:08:27,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:27,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:27,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:27,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:27,411 INFO L87 Difference]: Start difference. First operand 3972 states and 5545 transitions. Second operand 3 states. [2020-10-14 10:08:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:27,676 INFO L93 Difference]: Finished difference Result 8312 states and 11542 transitions. [2020-10-14 10:08:27,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:27,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-10-14 10:08:27,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:27,689 INFO L225 Difference]: With dead ends: 8312 [2020-10-14 10:08:27,690 INFO L226 Difference]: Without dead ends: 4338 [2020-10-14 10:08:27,699 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 [2020-10-14 10:08:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4338 states. [2020-10-14 10:08:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4338 to 4172. [2020-10-14 10:08:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4172 states. [2020-10-14 10:08:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 5809 transitions. [2020-10-14 10:08:27,830 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 5809 transitions. Word has length 172 [2020-10-14 10:08:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:27,831 INFO L479 AbstractCegarLoop]: Abstraction has 4172 states and 5809 transitions. [2020-10-14 10:08:27,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 5809 transitions. [2020-10-14 10:08:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 10:08:27,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:27,846 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:27,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:08:27,846 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:27,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1393565724, now seen corresponding path program 1 times [2020-10-14 10:08:27,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:27,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910295478] [2020-10-14 10:08:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:27,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:28,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:29,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:29,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:29,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 10:08:29,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:08:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-10-14 10:08:29,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:29,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:08:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:08:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:29,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:29,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:29,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:08:29,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:29,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:29,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-14 10:08:30,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910295478] [2020-10-14 10:08:30,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:30,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:08:30,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149818387] [2020-10-14 10:08:30,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:08:30,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:30,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:08:30,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:08:30,002 INFO L87 Difference]: Start difference. First operand 4172 states and 5809 transitions. Second operand 3 states. [2020-10-14 10:08:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:30,375 INFO L93 Difference]: Finished difference Result 8522 states and 11817 transitions. [2020-10-14 10:08:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:08:30,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-10-14 10:08:30,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:30,392 INFO L225 Difference]: With dead ends: 8522 [2020-10-14 10:08:30,392 INFO L226 Difference]: Without dead ends: 4356 [2020-10-14 10:08:30,405 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 [2020-10-14 10:08:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2020-10-14 10:08:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 4196. [2020-10-14 10:08:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4196 states. [2020-10-14 10:08:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 5825 transitions. [2020-10-14 10:08:30,582 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 5825 transitions. Word has length 184 [2020-10-14 10:08:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:30,583 INFO L479 AbstractCegarLoop]: Abstraction has 4196 states and 5825 transitions. [2020-10-14 10:08:30,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:08:30,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 5825 transitions. [2020-10-14 10:08:30,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 10:08:30,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:30,594 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1] [2020-10-14 10:08:30,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:08:30,595 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:30,595 INFO L82 PathProgramCache]: Analyzing trace with hash -194168234, now seen corresponding path program 1 times [2020-10-14 10:08:30,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:30,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487248259] [2020-10-14 10:08:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:30,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:31,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:31,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 10:08:31,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:31,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-10-14 10:08:31,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:31,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:08:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 10:08:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 10:08:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:31,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 10:08:31,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:08:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:31,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:08:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 190 proven. 4 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-14 10:08:31,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487248259] [2020-10-14 10:08:31,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:08:31,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 10:08:31,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16111356] [2020-10-14 10:08:31,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:08:31,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:31,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:08:31,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:08:31,842 INFO L87 Difference]: Start difference. First operand 4196 states and 5825 transitions. Second operand 4 states. [2020-10-14 10:08:32,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:32,344 INFO L93 Difference]: Finished difference Result 12678 states and 17549 transitions. [2020-10-14 10:08:32,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:32,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-10-14 10:08:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:32,365 INFO L225 Difference]: With dead ends: 12678 [2020-10-14 10:08:32,365 INFO L226 Difference]: Without dead ends: 8408 [2020-10-14 10:08:32,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8408 states. [2020-10-14 10:08:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8408 to 5416. [2020-10-14 10:08:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5416 states. [2020-10-14 10:08:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5416 states to 5416 states and 7629 transitions. [2020-10-14 10:08:32,573 INFO L78 Accepts]: Start accepts. Automaton has 5416 states and 7629 transitions. Word has length 194 [2020-10-14 10:08:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:32,574 INFO L479 AbstractCegarLoop]: Abstraction has 5416 states and 7629 transitions. [2020-10-14 10:08:32,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:08:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5416 states and 7629 transitions. [2020-10-14 10:08:32,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 10:08:32,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:32,591 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:32,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:08:32,592 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:32,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2082079862, now seen corresponding path program 1 times [2020-10-14 10:08:32,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:32,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200718118] [2020-10-14 10:08:32,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 10:08:32,637 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 10:08:32,637 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 10:08:32,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:08:32,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 10:08:32 BoogieIcfgContainer [2020-10-14 10:08:32,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 10:08:32,733 INFO L168 Benchmark]: Toolchain (without parser) took 25559.00 ms. Allocated memory was 144.7 MB in the beginning and 649.1 MB in the end (delta: 504.4 MB). Free memory was 100.7 MB in the beginning and 259.9 MB in the end (delta: -159.1 MB). Peak memory consumption was 345.2 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:32,735 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 10:08:32,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.12 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 100.7 MB in the beginning and 175.6 MB in the end (delta: -74.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:32,742 INFO L168 Benchmark]: Boogie Preprocessor took 59.91 ms. Allocated memory is still 200.8 MB. Free memory was 175.6 MB in the beginning and 172.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:32,743 INFO L168 Benchmark]: RCFGBuilder took 853.37 ms. Allocated memory is still 200.8 MB. Free memory was 172.5 MB in the beginning and 120.1 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:32,743 INFO L168 Benchmark]: TraceAbstraction took 24072.96 ms. Allocated memory was 200.8 MB in the beginning and 649.1 MB in the end (delta: 448.3 MB). Free memory was 119.1 MB in the beginning and 259.9 MB in the end (delta: -140.8 MB). Peak memory consumption was 307.5 MB. Max. memory is 7.1 GB. [2020-10-14 10:08:32,750 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 567.12 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 100.7 MB in the beginning and 175.6 MB in the end (delta: -74.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.91 ms. Allocated memory is still 200.8 MB. Free memory was 175.6 MB in the beginning and 172.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 853.37 ms. Allocated memory is still 200.8 MB. Free memory was 172.5 MB in the beginning and 120.1 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24072.96 ms. Allocated memory was 200.8 MB in the beginning and 649.1 MB in the end (delta: 448.3 MB). Free memory was 119.1 MB in the beginning and 259.9 MB in the end (delta: -140.8 MB). Peak memory consumption was 307.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L635] int s ; [L636] int tmp ; [L640] s = 8464 [L641] 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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_int() ; [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 = __VERIFIER_nondet_ulong() ; [L68] unsigned long __cil_tmp59 ; [L69] int __cil_tmp60 ; [L70] unsigned long __cil_tmp61 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND TRUE s__info_callback != 0 [L82] cb = s__info_callback [L88] s__in_handshake ++ [L89] COND TRUE tmp___1 + 12288 [L90] COND TRUE tmp___2 + 16384 [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L296] COND FALSE !(\read(s__hit)) [L299] s__state = 8512 [L301] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND TRUE s__state == 8512 [L306] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L307] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L308] COND TRUE __cil_tmp56 + 256UL [L309] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(ret <= 0) [L377] s__state = 8544 [L378] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND TRUE s__state == 8544 [L382] COND TRUE s__verify_mode + 1 [L383] COND FALSE !(s__session__peer != 0) [L394] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L395] __cil_tmp61 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L396] COND FALSE !(__cil_tmp61 + 256UL) [L406] s__s3__tmp__cert_request = 1 [L407] ret = __VERIFIER_nondet_int() [L408] COND FALSE !(ret <= 0) [L411] s__state = 8448 [L412] s__s3__tmp__next_state___0 = 8576 [L413] s__init_num = 0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND TRUE s__state == 8448 [L434] COND FALSE !(num1 > 0L) [L443] s__state = s__s3__tmp__next_state___0 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND FALSE !(state == 8576) [L619] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND FALSE !(s__state == 8496) [L137] COND FALSE !(s__state == 8497) [L140] COND FALSE !(s__state == 8512) [L143] COND FALSE !(s__state == 8513) [L146] COND FALSE !(s__state == 8528) [L149] COND FALSE !(s__state == 8529) [L152] COND FALSE !(s__state == 8544) [L155] COND FALSE !(s__state == 8545) [L158] COND FALSE !(s__state == 8560) [L161] COND FALSE !(s__state == 8561) [L164] COND FALSE !(s__state == 8448) [L167] COND TRUE s__state == 8576 [L447] ret = __VERIFIER_nondet_int() [L448] COND FALSE !(ret <= 0) [L451] COND FALSE !(ret == 2) [L454] ret = __VERIFIER_nondet_int() [L455] COND FALSE !(ret <= 0) [L458] s__init_num = 0 [L459] s__state = 8592 [L584] COND FALSE !(! s__s3__tmp__reuse_message) [L602] COND TRUE state == 8576 [L603] COND TRUE s__state == 8592 [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE tmp___2 != -16384 [L606] COND TRUE __cil_tmp56 != 4294967040 [L607] COND TRUE __cil_tmp58 != 4294967294 [L608] COND TRUE tmp___7 != 1024 [L609] COND TRUE tmp___7 != 512 [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 157 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.9s, OverallIterations: 19, TraceHistogramMax: 7, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3868 SDtfs, 3022 SDslu, 2808 SDs, 0 SdLazy, 2007 SolverSat, 651 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5416occurred in iteration=18, 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, 18 MinimizatonAttempts, 4196 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 1782 NumberOfCodeBlocks, 1782 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1567 ConstructedInterpolants, 0 QuantifiedInterpolants, 280795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 17 PerfectInterpolantSequences, 1597/1601 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...