/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 SingleStatement --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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:39:07,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:39:07,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:39:07,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:39:07,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:39:07,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:39:07,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:39:07,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:39:07,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:39:07,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:39:07,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:39:07,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:39:07,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:39:07,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:39:07,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:39:07,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:39:07,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:39:07,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:39:07,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:39:07,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:39:07,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:39:07,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:39:07,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:39:07,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:39:07,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:39:07,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:39:07,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:39:07,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:39:07,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:39:07,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:39:07,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:39:07,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:39:07,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:39:07,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:39:07,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:39:07,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:39:07,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:39:07,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:39:07,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:39:07,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:39:07,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:39:07,659 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 [2020-09-25 06:39:07,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:39:07,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:39:07,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:39:07,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:39:07,686 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:39:07,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:39:07,687 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:39:07,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:39:07,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:39:07,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:39:07,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:39:07,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:39:07,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:39:07,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:39:07,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:39:07,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:39:07,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:39:07,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:39:07,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:39:07,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:39:07,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:39:07,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:39:07,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:39:07,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:39:07,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:39:07,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:39:07,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:39:07,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:39:07,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:39:07,692 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 -> SingleStatement 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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=true; [2020-09-25 06:39:08,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:39:08,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:39:08,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:39:08,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:39:08,185 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:39:08,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 06:39:08,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e4909bf9/6fc1e3f80f82424288555f4e87c0ead1/FLAG791dafc77 [2020-09-25 06:39:08,880 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:39:08,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-25 06:39:08,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e4909bf9/6fc1e3f80f82424288555f4e87c0ead1/FLAG791dafc77 [2020-09-25 06:39:09,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e4909bf9/6fc1e3f80f82424288555f4e87c0ead1 [2020-09-25 06:39:09,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:39:09,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:39:09,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:09,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:39:09,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:39:09,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f2fbcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09, skipping insertion in model container [2020-09-25 06:39:09,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:39:09,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:39:09,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:09,568 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:39:09,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:09,800 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:39:09,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09 WrapperNode [2020-09-25 06:39:09,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:09,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:39:09,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:39:09,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:39:09,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (1/1) ... [2020-09-25 06:39:09,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:39:09,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:39:09,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:39:09,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:39:09,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (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 [2020-09-25 06:39:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:39:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:39:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 06:39:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:39:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:39:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 06:39:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:39:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 06:39:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-25 06:39:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 06:39:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:39:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:39:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:39:10,213 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 06:39:11,017 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 06:39:11,018 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 06:39:11,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:39:11,056 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:39:11,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:11 BoogieIcfgContainer [2020-09-25 06:39:11,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:39:11,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:39:11,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:39:11,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:39:11,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:39:09" (1/3) ... [2020-09-25 06:39:11,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d18ba08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:11, skipping insertion in model container [2020-09-25 06:39:11,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:09" (2/3) ... [2020-09-25 06:39:11,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d18ba08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:11, skipping insertion in model container [2020-09-25 06:39:11,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:11" (3/3) ... [2020-09-25 06:39:11,092 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-25 06:39:11,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:39:11,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:39:11,149 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:39:11,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:39:11,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:39:11,208 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:39:11,209 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:39:11,209 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:39:11,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:39:11,209 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:39:11,209 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:39:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-25 06:39:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 06:39:11,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:11,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:11,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:11,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:11,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-25 06:39:11,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:11,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097844664] [2020-09-25 06:39:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:12,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:12,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 06:39:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-09-25 06:39:12,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:12,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 06:39:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:39:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:39:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:13,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:13,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:13,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:13,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:13,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:13,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:13,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:13,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:13,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097844664] [2020-09-25 06:39:13,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:13,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:13,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399967722] [2020-09-25 06:39:13,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:13,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:13,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:13,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:13,142 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 4 states. [2020-09-25 06:39:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:13,490 INFO L93 Difference]: Finished difference Result 893 states and 1167 transitions. [2020-09-25 06:39:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:13,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-09-25 06:39:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:13,516 INFO L225 Difference]: With dead ends: 893 [2020-09-25 06:39:13,517 INFO L226 Difference]: Without dead ends: 501 [2020-09-25 06:39:13,523 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 [2020-09-25 06:39:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-25 06:39:13,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 465. [2020-09-25 06:39:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-09-25 06:39:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 563 transitions. [2020-09-25 06:39:13,604 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 563 transitions. Word has length 161 [2020-09-25 06:39:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:13,605 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 563 transitions. [2020-09-25 06:39:13,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 563 transitions. [2020-09-25 06:39:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 06:39:13,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:13,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:13,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:39:13,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:13,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:13,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1922098023, now seen corresponding path program 1 times [2020-09-25 06:39:13,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:13,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629571958] [2020-09-25 06:39:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:13,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:13,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:14,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:14,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:15,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:15,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:15,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:39:15,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:39:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-09-25 06:39:15,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:15,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 06:39:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:39:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:15,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:15,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:15,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:15,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:15,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:15,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629571958] [2020-09-25 06:39:15,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:15,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:15,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045006148] [2020-09-25 06:39:15,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:15,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:15,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:15,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:15,571 INFO L87 Difference]: Start difference. First operand 465 states and 563 transitions. Second operand 4 states. [2020-09-25 06:39:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:15,934 INFO L93 Difference]: Finished difference Result 824 states and 1023 transitions. [2020-09-25 06:39:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:15,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 06:39:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:15,943 INFO L225 Difference]: With dead ends: 824 [2020-09-25 06:39:15,944 INFO L226 Difference]: Without dead ends: 498 [2020-09-25 06:39:15,949 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 [2020-09-25 06:39:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-09-25 06:39:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 441. [2020-09-25 06:39:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-25 06:39:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 536 transitions. [2020-09-25 06:39:15,991 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 536 transitions. Word has length 167 [2020-09-25 06:39:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:15,992 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 536 transitions. [2020-09-25 06:39:15,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:15,993 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 536 transitions. [2020-09-25 06:39:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 06:39:15,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:15,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:15,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:39:16,000 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:16,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:16,000 INFO L82 PathProgramCache]: Analyzing trace with hash -2025816329, now seen corresponding path program 1 times [2020-09-25 06:39:16,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:16,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562082909] [2020-09-25 06:39:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:16,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:16,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:17,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 06:39:17,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1601 [2020-09-25 06:39:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:17,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 06:39:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:39:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:17,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:17,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:17,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:17,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:17,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:17,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:17,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:17,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562082909] [2020-09-25 06:39:17,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:17,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:17,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554311624] [2020-09-25 06:39:17,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:17,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:17,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:17,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:17,737 INFO L87 Difference]: Start difference. First operand 441 states and 536 transitions. Second operand 4 states. [2020-09-25 06:39:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:18,055 INFO L93 Difference]: Finished difference Result 792 states and 997 transitions. [2020-09-25 06:39:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:18,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-09-25 06:39:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:18,062 INFO L225 Difference]: With dead ends: 792 [2020-09-25 06:39:18,062 INFO L226 Difference]: Without dead ends: 490 [2020-09-25 06:39:18,063 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 [2020-09-25 06:39:18,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-25 06:39:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 479. [2020-09-25 06:39:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 06:39:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 06:39:18,085 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 172 [2020-09-25 06:39:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:18,087 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 06:39:18,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:18,087 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 06:39:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 06:39:18,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:18,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:18,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:39:18,093 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1867249191, now seen corresponding path program 1 times [2020-09-25 06:39:18,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:18,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391596081] [2020-09-25 06:39:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:18,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:19,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 06:39:19,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:19,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-09-25 06:39:19,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:19,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 06:39:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:39:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:19,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:19,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:19,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:19,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:19,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:19,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:19,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391596081] [2020-09-25 06:39:19,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:19,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:19,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861682622] [2020-09-25 06:39:19,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:19,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:19,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:19,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:19,453 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 4 states. [2020-09-25 06:39:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:19,746 INFO L93 Difference]: Finished difference Result 885 states and 1098 transitions. [2020-09-25 06:39:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:19,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-09-25 06:39:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:19,752 INFO L225 Difference]: With dead ends: 885 [2020-09-25 06:39:19,752 INFO L226 Difference]: Without dead ends: 545 [2020-09-25 06:39:19,754 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 [2020-09-25 06:39:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-09-25 06:39:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 479. [2020-09-25 06:39:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 06:39:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 06:39:19,773 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 173 [2020-09-25 06:39:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:19,774 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 06:39:19,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 06:39:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 06:39:19,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:19,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:19,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:39:19,780 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:19,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:19,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1166211591, now seen corresponding path program 1 times [2020-09-25 06:39:19,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:19,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934963738] [2020-09-25 06:39:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:23,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:23,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 06:39:23,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:39:23,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3863 [2020-09-25 06:39:23,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:23,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 06:39:23,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:39:23,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:23,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:23,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:39:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:23,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:23,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:23,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934963738] [2020-09-25 06:39:23,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:23,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:23,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480047438] [2020-09-25 06:39:23,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:23,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:23,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:23,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:23,747 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 4 states. [2020-09-25 06:39:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:23,997 INFO L93 Difference]: Finished difference Result 943 states and 1172 transitions. [2020-09-25 06:39:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:23,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-09-25 06:39:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:24,002 INFO L225 Difference]: With dead ends: 943 [2020-09-25 06:39:24,002 INFO L226 Difference]: Without dead ends: 603 [2020-09-25 06:39:24,003 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 [2020-09-25 06:39:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-09-25 06:39:24,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 510. [2020-09-25 06:39:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-09-25 06:39:24,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 618 transitions. [2020-09-25 06:39:24,019 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 618 transitions. Word has length 174 [2020-09-25 06:39:24,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:24,019 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 618 transitions. [2020-09-25 06:39:24,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 618 transitions. [2020-09-25 06:39:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 06:39:24,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:24,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:24,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:39:24,023 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:24,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1768045815, now seen corresponding path program 1 times [2020-09-25 06:39:24,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:24,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68489616] [2020-09-25 06:39:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:24,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:26,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 06:39:26,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:39:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-09-25 06:39:26,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:26,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:39:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 06:39:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:39:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:26,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:26,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:26,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:26,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:26,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:26,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:26,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:26,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68489616] [2020-09-25 06:39:26,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:26,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:26,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829469364] [2020-09-25 06:39:26,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:26,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:26,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:26,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:26,814 INFO L87 Difference]: Start difference. First operand 510 states and 618 transitions. Second operand 4 states. [2020-09-25 06:39:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:27,040 INFO L93 Difference]: Finished difference Result 974 states and 1209 transitions. [2020-09-25 06:39:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:39:27,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-09-25 06:39:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:27,043 INFO L225 Difference]: With dead ends: 974 [2020-09-25 06:39:27,044 INFO L226 Difference]: Without dead ends: 603 [2020-09-25 06:39:27,045 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 [2020-09-25 06:39:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-09-25 06:39:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 479. [2020-09-25 06:39:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 06:39:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-09-25 06:39:27,060 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 175 [2020-09-25 06:39:27,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:27,061 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-09-25 06:39:27,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-09-25 06:39:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 06:39:27,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:27,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:27,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:39:27,064 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:27,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:27,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1172377495, now seen corresponding path program 1 times [2020-09-25 06:39:27,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:27,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962246502] [2020-09-25 06:39:27,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:27,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:27,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 06:39:27,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:27,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-25 06:39:27,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:27,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 06:39:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 06:39:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:27,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:27,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:27,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:27,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:27,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:27,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:27,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:27,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:27,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:27,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962246502] [2020-09-25 06:39:27,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:27,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:27,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752194577] [2020-09-25 06:39:27,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:27,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:27,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:27,602 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 3 states. [2020-09-25 06:39:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:27,818 INFO L93 Difference]: Finished difference Result 1137 states and 1435 transitions. [2020-09-25 06:39:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:27,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-09-25 06:39:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:27,826 INFO L225 Difference]: With dead ends: 1137 [2020-09-25 06:39:27,826 INFO L226 Difference]: Without dead ends: 797 [2020-09-25 06:39:27,828 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 [2020-09-25 06:39:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-09-25 06:39:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 795. [2020-09-25 06:39:27,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-09-25 06:39:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 973 transitions. [2020-09-25 06:39:27,858 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 973 transitions. Word has length 176 [2020-09-25 06:39:27,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:27,859 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 973 transitions. [2020-09-25 06:39:27,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:27,859 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 973 transitions. [2020-09-25 06:39:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 06:39:27,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:27,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:27,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:39:27,865 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:27,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1059203184, now seen corresponding path program 1 times [2020-09-25 06:39:27,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:27,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745308709] [2020-09-25 06:39:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:27,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:28,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:28,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 06:39:28,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:28,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-25 06:39:28,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:28,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:39:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:39:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 06:39:28,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:28,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:28,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:28,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:28,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:28,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:28,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745308709] [2020-09-25 06:39:28,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:28,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:39:28,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015749462] [2020-09-25 06:39:28,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:39:28,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:28,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:39:28,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:39:28,679 INFO L87 Difference]: Start difference. First operand 795 states and 973 transitions. Second operand 7 states. [2020-09-25 06:39:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:29,132 INFO L93 Difference]: Finished difference Result 2115 states and 2636 transitions. [2020-09-25 06:39:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:39:29,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-09-25 06:39:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:29,140 INFO L225 Difference]: With dead ends: 2115 [2020-09-25 06:39:29,140 INFO L226 Difference]: Without dead ends: 1459 [2020-09-25 06:39:29,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:39:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-09-25 06:39:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1057. [2020-09-25 06:39:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-09-25 06:39:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1330 transitions. [2020-09-25 06:39:29,184 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1330 transitions. Word has length 179 [2020-09-25 06:39:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:29,184 INFO L479 AbstractCegarLoop]: Abstraction has 1057 states and 1330 transitions. [2020-09-25 06:39:29,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:39:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1330 transitions. [2020-09-25 06:39:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 06:39:29,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:29,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:29,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:39:29,190 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:29,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1625465716, now seen corresponding path program 1 times [2020-09-25 06:39:29,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:29,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125362931] [2020-09-25 06:39:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:29,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:29,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 06:39:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 06:39:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:29,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 06:39:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:39:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:29,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:29,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:29,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:29,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:29,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125362931] [2020-09-25 06:39:29,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:29,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:29,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789644472] [2020-09-25 06:39:29,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:29,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:29,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:29,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:29,649 INFO L87 Difference]: Start difference. First operand 1057 states and 1330 transitions. Second operand 3 states. [2020-09-25 06:39:29,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:29,852 INFO L93 Difference]: Finished difference Result 1977 states and 2558 transitions. [2020-09-25 06:39:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:29,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-09-25 06:39:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:29,860 INFO L225 Difference]: With dead ends: 1977 [2020-09-25 06:39:29,860 INFO L226 Difference]: Without dead ends: 1498 [2020-09-25 06:39:29,862 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 [2020-09-25 06:39:29,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-09-25 06:39:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1496. [2020-09-25 06:39:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-09-25 06:39:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1886 transitions. [2020-09-25 06:39:29,918 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1886 transitions. Word has length 202 [2020-09-25 06:39:29,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:29,918 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 1886 transitions. [2020-09-25 06:39:29,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1886 transitions. [2020-09-25 06:39:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 06:39:29,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:29,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:29,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:39:29,924 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:29,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1593461350, now seen corresponding path program 1 times [2020-09-25 06:39:29,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:29,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032110563] [2020-09-25 06:39:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:30,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:31,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:31,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 06:39:31,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:31,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-09-25 06:39:31,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:31,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:31,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:31,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:39:31,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 06:39:31,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:31,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:31,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:31,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:31,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:39:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:39:31,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032110563] [2020-09-25 06:39:31,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:31,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:39:31,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460131365] [2020-09-25 06:39:31,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:39:31,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:31,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:39:31,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:39:31,372 INFO L87 Difference]: Start difference. First operand 1496 states and 1886 transitions. Second operand 6 states. [2020-09-25 06:39:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:31,665 INFO L93 Difference]: Finished difference Result 2964 states and 3803 transitions. [2020-09-25 06:39:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:39:31,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 06:39:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:31,673 INFO L225 Difference]: With dead ends: 2964 [2020-09-25 06:39:31,674 INFO L226 Difference]: Without dead ends: 1607 [2020-09-25 06:39:31,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:39:31,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-09-25 06:39:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1601. [2020-09-25 06:39:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2020-09-25 06:39:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2048 transitions. [2020-09-25 06:39:31,744 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2048 transitions. Word has length 203 [2020-09-25 06:39:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:31,744 INFO L479 AbstractCegarLoop]: Abstraction has 1601 states and 2048 transitions. [2020-09-25 06:39:31,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:39:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2048 transitions. [2020-09-25 06:39:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 06:39:31,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:31,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:31,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:39:31,749 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:31,750 INFO L82 PathProgramCache]: Analyzing trace with hash 438775901, now seen corresponding path program 1 times [2020-09-25 06:39:31,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:31,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246402149] [2020-09-25 06:39:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 06:39:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-09-25 06:39:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:33,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:39:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 06:39:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:33,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:33,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:33,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:33,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:33,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:39:33,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246402149] [2020-09-25 06:39:33,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:33,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:39:33,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907030833] [2020-09-25 06:39:33,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:39:33,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:33,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:39:33,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:39:33,222 INFO L87 Difference]: Start difference. First operand 1601 states and 2048 transitions. Second operand 6 states. [2020-09-25 06:39:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:33,512 INFO L93 Difference]: Finished difference Result 3156 states and 4079 transitions. [2020-09-25 06:39:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:39:33,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2020-09-25 06:39:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:33,521 INFO L225 Difference]: With dead ends: 3156 [2020-09-25 06:39:33,521 INFO L226 Difference]: Without dead ends: 1694 [2020-09-25 06:39:33,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:39:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-09-25 06:39:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1667. [2020-09-25 06:39:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2020-09-25 06:39:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2141 transitions. [2020-09-25 06:39:33,580 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2141 transitions. Word has length 208 [2020-09-25 06:39:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:33,580 INFO L479 AbstractCegarLoop]: Abstraction has 1667 states and 2141 transitions. [2020-09-25 06:39:33,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:39:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2141 transitions. [2020-09-25 06:39:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 06:39:33,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:33,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:33,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:39:33,586 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:33,586 INFO L82 PathProgramCache]: Analyzing trace with hash -747548647, now seen corresponding path program 1 times [2020-09-25 06:39:33,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:33,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083396160] [2020-09-25 06:39:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:34,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 06:39:34,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-25 06:39:34,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:34,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 06:39:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:39:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:34,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:34,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:34,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:34,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:34,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:34,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:39:34,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083396160] [2020-09-25 06:39:34,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:34,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:34,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484257546] [2020-09-25 06:39:34,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:34,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:34,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:34,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:34,266 INFO L87 Difference]: Start difference. First operand 1667 states and 2141 transitions. Second operand 3 states. [2020-09-25 06:39:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:34,350 INFO L93 Difference]: Finished difference Result 4620 states and 6008 transitions. [2020-09-25 06:39:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:34,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-09-25 06:39:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:34,365 INFO L225 Difference]: With dead ends: 4620 [2020-09-25 06:39:34,366 INFO L226 Difference]: Without dead ends: 3092 [2020-09-25 06:39:34,370 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 [2020-09-25 06:39:34,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-09-25 06:39:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3090. [2020-09-25 06:39:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3090 states. [2020-09-25 06:39:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 4003 transitions. [2020-09-25 06:39:34,471 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 4003 transitions. Word has length 208 [2020-09-25 06:39:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:34,472 INFO L479 AbstractCegarLoop]: Abstraction has 3090 states and 4003 transitions. [2020-09-25 06:39:34,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 4003 transitions. [2020-09-25 06:39:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 06:39:34,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:34,477 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:34,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 06:39:34,478 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:34,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:34,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1289279705, now seen corresponding path program 1 times [2020-09-25 06:39:34,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:34,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317745068] [2020-09-25 06:39:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:38,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:38,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 06:39:38,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:39:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4244 [2020-09-25 06:39:38,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:38,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-09-25 06:39:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:39:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:38,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:38,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:38,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:38,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:38,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:38,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:38,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:39:38,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317745068] [2020-09-25 06:39:38,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:38,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:38,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435464192] [2020-09-25 06:39:38,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:38,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:38,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:38,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:38,809 INFO L87 Difference]: Start difference. First operand 3090 states and 4003 transitions. Second operand 3 states. [2020-09-25 06:39:38,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:38,874 INFO L93 Difference]: Finished difference Result 5789 states and 7533 transitions. [2020-09-25 06:39:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:38,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-09-25 06:39:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:38,887 INFO L225 Difference]: With dead ends: 5789 [2020-09-25 06:39:38,887 INFO L226 Difference]: Without dead ends: 2808 [2020-09-25 06:39:38,893 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 [2020-09-25 06:39:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2020-09-25 06:39:38,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2808. [2020-09-25 06:39:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2808 states. [2020-09-25 06:39:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3517 transitions. [2020-09-25 06:39:38,972 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3517 transitions. Word has length 209 [2020-09-25 06:39:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:38,973 INFO L479 AbstractCegarLoop]: Abstraction has 2808 states and 3517 transitions. [2020-09-25 06:39:38,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3517 transitions. [2020-09-25 06:39:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 06:39:38,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:38,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:38,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 06:39:38,978 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:38,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:38,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1767645779, now seen corresponding path program 1 times [2020-09-25 06:39:38,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:38,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122342885] [2020-09-25 06:39:38,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:39,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:40,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 06:39:40,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1275 [2020-09-25 06:39:40,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:40,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:39:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 06:39:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:40,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:40,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:40,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:40,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:39:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:39:40,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122342885] [2020-09-25 06:39:40,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:40,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:39:40,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347235842] [2020-09-25 06:39:40,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:39:40,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:40,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:39:40,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:39:40,390 INFO L87 Difference]: Start difference. First operand 2808 states and 3517 transitions. Second operand 6 states. [2020-09-25 06:39:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:40,627 INFO L93 Difference]: Finished difference Result 5538 states and 6960 transitions. [2020-09-25 06:39:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:39:40,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2020-09-25 06:39:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:40,640 INFO L225 Difference]: With dead ends: 5538 [2020-09-25 06:39:40,640 INFO L226 Difference]: Without dead ends: 2869 [2020-09-25 06:39:40,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:39:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-09-25 06:39:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2819. [2020-09-25 06:39:40,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2020-09-25 06:39:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3528 transitions. [2020-09-25 06:39:40,729 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3528 transitions. Word has length 209 [2020-09-25 06:39:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:40,730 INFO L479 AbstractCegarLoop]: Abstraction has 2819 states and 3528 transitions. [2020-09-25 06:39:40,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:39:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3528 transitions. [2020-09-25 06:39:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 06:39:40,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:40,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:40,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 06:39:40,734 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash -478339839, now seen corresponding path program 1 times [2020-09-25 06:39:40,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:40,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767459095] [2020-09-25 06:39:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:41,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 06:39:41,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-25 06:39:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:41,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 06:39:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:39:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:39:41,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:41,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:41,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:41,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:41,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:39:41,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767459095] [2020-09-25 06:39:41,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:41,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:41,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836848174] [2020-09-25 06:39:41,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:41,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:41,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:41,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:41,361 INFO L87 Difference]: Start difference. First operand 2819 states and 3528 transitions. Second operand 3 states. [2020-09-25 06:39:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:41,493 INFO L93 Difference]: Finished difference Result 4629 states and 5836 transitions. [2020-09-25 06:39:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:41,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2020-09-25 06:39:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:41,502 INFO L225 Difference]: With dead ends: 4629 [2020-09-25 06:39:41,502 INFO L226 Difference]: Without dead ends: 1960 [2020-09-25 06:39:41,510 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 [2020-09-25 06:39:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-09-25 06:39:41,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1960. [2020-09-25 06:39:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2020-09-25 06:39:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2461 transitions. [2020-09-25 06:39:41,574 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2461 transitions. Word has length 212 [2020-09-25 06:39:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:41,575 INFO L479 AbstractCegarLoop]: Abstraction has 1960 states and 2461 transitions. [2020-09-25 06:39:41,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2461 transitions. [2020-09-25 06:39:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 06:39:41,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:41,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:41,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 06:39:41,579 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:41,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1924666477, now seen corresponding path program 1 times [2020-09-25 06:39:41,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:41,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187959719] [2020-09-25 06:39:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:42,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 06:39:42,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-09-25 06:39:42,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:42,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 06:39:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:39:42,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:42,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:42,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:42,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:42,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:42,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:42,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:42,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:39:42,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187959719] [2020-09-25 06:39:42,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:42,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:39:42,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976592419] [2020-09-25 06:39:42,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:39:42,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:42,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:39:42,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:42,333 INFO L87 Difference]: Start difference. First operand 1960 states and 2461 transitions. Second operand 5 states. [2020-09-25 06:39:42,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:42,760 INFO L93 Difference]: Finished difference Result 6238 states and 7897 transitions. [2020-09-25 06:39:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:39:42,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-09-25 06:39:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:42,779 INFO L225 Difference]: With dead ends: 6238 [2020-09-25 06:39:42,779 INFO L226 Difference]: Without dead ends: 4433 [2020-09-25 06:39:42,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:39:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2020-09-25 06:39:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 2024. [2020-09-25 06:39:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2020-09-25 06:39:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2545 transitions. [2020-09-25 06:39:42,873 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2545 transitions. Word has length 213 [2020-09-25 06:39:42,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:42,874 INFO L479 AbstractCegarLoop]: Abstraction has 2024 states and 2545 transitions. [2020-09-25 06:39:42,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:39:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2545 transitions. [2020-09-25 06:39:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 06:39:42,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:42,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:42,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 06:39:42,877 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:42,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1074238856, now seen corresponding path program 1 times [2020-09-25 06:39:42,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:42,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662584828] [2020-09-25 06:39:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 06:39:43,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 06:39:43,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 06:39:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:39:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:43,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:43,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:39:43,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662584828] [2020-09-25 06:39:43,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:43,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:43,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732310802] [2020-09-25 06:39:43,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:43,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:43,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:43,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:43,176 INFO L87 Difference]: Start difference. First operand 2024 states and 2545 transitions. Second operand 3 states. [2020-09-25 06:39:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:43,384 INFO L93 Difference]: Finished difference Result 4791 states and 6124 transitions. [2020-09-25 06:39:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:43,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-09-25 06:39:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:43,399 INFO L225 Difference]: With dead ends: 4791 [2020-09-25 06:39:43,399 INFO L226 Difference]: Without dead ends: 2922 [2020-09-25 06:39:43,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-09-25 06:39:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2020-09-25 06:39:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2920 states. [2020-09-25 06:39:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3665 transitions. [2020-09-25 06:39:43,478 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3665 transitions. Word has length 230 [2020-09-25 06:39:43,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:43,479 INFO L479 AbstractCegarLoop]: Abstraction has 2920 states and 3665 transitions. [2020-09-25 06:39:43,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3665 transitions. [2020-09-25 06:39:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 06:39:43,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:43,483 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:43,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 06:39:43,483 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:43,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:43,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1847120940, now seen corresponding path program 1 times [2020-09-25 06:39:43,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:43,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504439536] [2020-09-25 06:39:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:44,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:44,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 06:39:44,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 06:39:44,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:44,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 06:39:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:39:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:44,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:44,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:44,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:44,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:44,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:39:44,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504439536] [2020-09-25 06:39:44,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:44,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:44,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353172096] [2020-09-25 06:39:44,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:44,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:44,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:44,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:44,208 INFO L87 Difference]: Start difference. First operand 2920 states and 3665 transitions. Second operand 3 states. [2020-09-25 06:39:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:44,387 INFO L93 Difference]: Finished difference Result 4867 states and 6143 transitions. [2020-09-25 06:39:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:44,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-09-25 06:39:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:44,394 INFO L225 Difference]: With dead ends: 4867 [2020-09-25 06:39:44,394 INFO L226 Difference]: Without dead ends: 2102 [2020-09-25 06:39:44,401 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 [2020-09-25 06:39:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2020-09-25 06:39:44,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2102. [2020-09-25 06:39:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2020-09-25 06:39:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2635 transitions. [2020-09-25 06:39:44,454 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2635 transitions. Word has length 240 [2020-09-25 06:39:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:44,455 INFO L479 AbstractCegarLoop]: Abstraction has 2102 states and 2635 transitions. [2020-09-25 06:39:44,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2635 transitions. [2020-09-25 06:39:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 06:39:44,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:44,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:44,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 06:39:44,459 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:44,459 INFO L82 PathProgramCache]: Analyzing trace with hash 400073983, now seen corresponding path program 1 times [2020-09-25 06:39:44,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:44,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658637589] [2020-09-25 06:39:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:44,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 06:39:44,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-25 06:39:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:44,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 06:39:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:39:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:45,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:45,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:45,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:45,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:45,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:45,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:39:45,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658637589] [2020-09-25 06:39:45,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:45,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:39:45,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551886951] [2020-09-25 06:39:45,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:39:45,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:45,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:39:45,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:45,071 INFO L87 Difference]: Start difference. First operand 2102 states and 2635 transitions. Second operand 5 states. [2020-09-25 06:39:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:45,712 INFO L93 Difference]: Finished difference Result 7572 states and 9751 transitions. [2020-09-25 06:39:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:39:45,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-09-25 06:39:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:45,728 INFO L225 Difference]: With dead ends: 7572 [2020-09-25 06:39:45,728 INFO L226 Difference]: Without dead ends: 5505 [2020-09-25 06:39:45,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:39:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2020-09-25 06:39:45,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 2522. [2020-09-25 06:39:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2522 states. [2020-09-25 06:39:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 3147 transitions. [2020-09-25 06:39:45,816 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 3147 transitions. Word has length 241 [2020-09-25 06:39:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:45,817 INFO L479 AbstractCegarLoop]: Abstraction has 2522 states and 3147 transitions. [2020-09-25 06:39:45,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:39:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 3147 transitions. [2020-09-25 06:39:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 06:39:45,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:45,823 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:45,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 06:39:45,824 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:45,824 INFO L82 PathProgramCache]: Analyzing trace with hash -255766369, now seen corresponding path program 1 times [2020-09-25 06:39:45,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:45,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25820145] [2020-09-25 06:39:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:45,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:46,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 06:39:46,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-25 06:39:46,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:46,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 06:39:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:39:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:46,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:46,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:46,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:46,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:46,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:46,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:46,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:39:46,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25820145] [2020-09-25 06:39:46,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:46,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:39:46,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467415633] [2020-09-25 06:39:46,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:39:46,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:46,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:39:46,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:46,323 INFO L87 Difference]: Start difference. First operand 2522 states and 3147 transitions. Second operand 5 states. [2020-09-25 06:39:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:46,896 INFO L93 Difference]: Finished difference Result 8076 states and 10147 transitions. [2020-09-25 06:39:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:39:46,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-09-25 06:39:46,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:46,909 INFO L225 Difference]: With dead ends: 8076 [2020-09-25 06:39:46,909 INFO L226 Difference]: Without dead ends: 5589 [2020-09-25 06:39:46,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:39:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5589 states. [2020-09-25 06:39:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5589 to 2764. [2020-09-25 06:39:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2020-09-25 06:39:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3433 transitions. [2020-09-25 06:39:47,003 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3433 transitions. Word has length 241 [2020-09-25 06:39:47,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:47,003 INFO L479 AbstractCegarLoop]: Abstraction has 2764 states and 3433 transitions. [2020-09-25 06:39:47,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:39:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3433 transitions. [2020-09-25 06:39:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 06:39:47,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:47,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:47,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 06:39:47,041 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:47,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:47,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1830826787, now seen corresponding path program 1 times [2020-09-25 06:39:47,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:47,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132070667] [2020-09-25 06:39:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:47,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 06:39:47,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:47,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-25 06:39:47,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:47,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-09-25 06:39:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:39:47,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:47,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:47,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:47,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:47,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:47,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:47,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:47,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:47,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 06:39:47,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132070667] [2020-09-25 06:39:47,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:47,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:47,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127385471] [2020-09-25 06:39:47,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:47,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:47,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:47,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:47,612 INFO L87 Difference]: Start difference. First operand 2764 states and 3433 transitions. Second operand 3 states. [2020-09-25 06:39:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:47,812 INFO L93 Difference]: Finished difference Result 6597 states and 8298 transitions. [2020-09-25 06:39:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:47,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-09-25 06:39:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:47,820 INFO L225 Difference]: With dead ends: 6597 [2020-09-25 06:39:47,821 INFO L226 Difference]: Without dead ends: 3988 [2020-09-25 06:39:47,825 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 [2020-09-25 06:39:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2020-09-25 06:39:47,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3986. [2020-09-25 06:39:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3986 states. [2020-09-25 06:39:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 4945 transitions. [2020-09-25 06:39:47,927 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 4945 transitions. Word has length 264 [2020-09-25 06:39:47,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:47,927 INFO L479 AbstractCegarLoop]: Abstraction has 3986 states and 4945 transitions. [2020-09-25 06:39:47,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:47,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 4945 transitions. [2020-09-25 06:39:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-25 06:39:47,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:47,933 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:47,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 06:39:47,933 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:47,934 INFO L82 PathProgramCache]: Analyzing trace with hash -962704645, now seen corresponding path program 1 times [2020-09-25 06:39:47,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:47,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759839164] [2020-09-25 06:39:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 06:39:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-09-25 06:39:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:48,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-09-25 06:39:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:39:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:48,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:48,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:48,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:48,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:48,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 06:39:48,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759839164] [2020-09-25 06:39:48,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:48,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:48,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963597094] [2020-09-25 06:39:48,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:48,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:48,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:48,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:48,832 INFO L87 Difference]: Start difference. First operand 3986 states and 4945 transitions. Second operand 3 states. [2020-09-25 06:39:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:48,959 INFO L93 Difference]: Finished difference Result 7877 states and 9803 transitions. [2020-09-25 06:39:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:48,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2020-09-25 06:39:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:48,968 INFO L225 Difference]: With dead ends: 7877 [2020-09-25 06:39:48,969 INFO L226 Difference]: Without dead ends: 4046 [2020-09-25 06:39:48,977 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 [2020-09-25 06:39:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-09-25 06:39:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 3986. [2020-09-25 06:39:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3986 states. [2020-09-25 06:39:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 4933 transitions. [2020-09-25 06:39:49,085 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 4933 transitions. Word has length 271 [2020-09-25 06:39:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:49,085 INFO L479 AbstractCegarLoop]: Abstraction has 3986 states and 4933 transitions. [2020-09-25 06:39:49,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 4933 transitions. [2020-09-25 06:39:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 06:39:49,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:49,090 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:49,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 06:39:49,091 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:49,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1586602167, now seen corresponding path program 1 times [2020-09-25 06:39:49,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:49,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441846861] [2020-09-25 06:39:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:50,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-25 06:39:50,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-09-25 06:39:50,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:50,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-25 06:39:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:39:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:50,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:50,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:50,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:50,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 06:39:50,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441846861] [2020-09-25 06:39:50,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:50,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:50,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238634164] [2020-09-25 06:39:50,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:50,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:50,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:50,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:50,142 INFO L87 Difference]: Start difference. First operand 3986 states and 4933 transitions. Second operand 3 states. [2020-09-25 06:39:50,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:50,364 INFO L93 Difference]: Finished difference Result 7781 states and 9660 transitions. [2020-09-25 06:39:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:50,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2020-09-25 06:39:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:50,372 INFO L225 Difference]: With dead ends: 7781 [2020-09-25 06:39:50,373 INFO L226 Difference]: Without dead ends: 3950 [2020-09-25 06:39:50,382 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 [2020-09-25 06:39:50,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2020-09-25 06:39:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3948. [2020-09-25 06:39:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2020-09-25 06:39:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 4875 transitions. [2020-09-25 06:39:50,492 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 4875 transitions. Word has length 274 [2020-09-25 06:39:50,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:50,492 INFO L479 AbstractCegarLoop]: Abstraction has 3948 states and 4875 transitions. [2020-09-25 06:39:50,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 4875 transitions. [2020-09-25 06:39:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 06:39:50,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:50,497 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:50,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-25 06:39:50,498 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash -964430198, now seen corresponding path program 1 times [2020-09-25 06:39:50,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:50,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232390779] [2020-09-25 06:39:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-25 06:39:51,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:39:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-09-25 06:39:51,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-09-25 06:39:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:39:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:51,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:51,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 06:39:51,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232390779] [2020-09-25 06:39:51,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:51,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:39:51,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546015601] [2020-09-25 06:39:51,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:39:51,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:51,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:39:51,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:51,518 INFO L87 Difference]: Start difference. First operand 3948 states and 4875 transitions. Second operand 5 states. [2020-09-25 06:39:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:52,144 INFO L93 Difference]: Finished difference Result 13352 states and 16609 transitions. [2020-09-25 06:39:52,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:39:52,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-09-25 06:39:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:52,156 INFO L225 Difference]: With dead ends: 13352 [2020-09-25 06:39:52,156 INFO L226 Difference]: Without dead ends: 9423 [2020-09-25 06:39:52,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:39:52,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9423 states. [2020-09-25 06:39:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9423 to 4440. [2020-09-25 06:39:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-09-25 06:39:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5471 transitions. [2020-09-25 06:39:52,306 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5471 transitions. Word has length 275 [2020-09-25 06:39:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:52,306 INFO L479 AbstractCegarLoop]: Abstraction has 4440 states and 5471 transitions. [2020-09-25 06:39:52,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:39:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5471 transitions. [2020-09-25 06:39:52,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 06:39:52,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:52,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:52,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-25 06:39:52,312 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:52,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:52,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1325066668, now seen corresponding path program 1 times [2020-09-25 06:39:52,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:52,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608921100] [2020-09-25 06:39:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-09-25 06:39:53,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-09-25 06:39:53,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:39:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 192 [2020-09-25 06:39:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:39:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:53,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:53,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 06:39:53,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608921100] [2020-09-25 06:39:53,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:53,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:39:53,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328081370] [2020-09-25 06:39:53,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:39:53,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:53,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:39:53,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:39:53,322 INFO L87 Difference]: Start difference. First operand 4440 states and 5471 transitions. Second operand 3 states. [2020-09-25 06:39:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:53,609 INFO L93 Difference]: Finished difference Result 9849 states and 12283 transitions. [2020-09-25 06:39:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:39:53,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2020-09-25 06:39:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:53,615 INFO L225 Difference]: With dead ends: 9849 [2020-09-25 06:39:53,616 INFO L226 Difference]: Without dead ends: 5510 [2020-09-25 06:39:53,623 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 [2020-09-25 06:39:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2020-09-25 06:39:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 5034. [2020-09-25 06:39:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5034 states. [2020-09-25 06:39:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 6371 transitions. [2020-09-25 06:39:53,757 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 6371 transitions. Word has length 293 [2020-09-25 06:39:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:53,758 INFO L479 AbstractCegarLoop]: Abstraction has 5034 states and 6371 transitions. [2020-09-25 06:39:53,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:39:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 6371 transitions. [2020-09-25 06:39:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-09-25 06:39:53,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:53,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:53,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-25 06:39:53,764 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:53,765 INFO L82 PathProgramCache]: Analyzing trace with hash 213695092, now seen corresponding path program 2 times [2020-09-25 06:39:53,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:53,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488676470] [2020-09-25 06:39:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-09-25 06:39:54,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1147 [2020-09-25 06:39:54,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:54,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:39:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-09-25 06:39:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:39:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:55,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:55,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:55,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:55,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:39:55,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:55,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:39:55,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:55,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:39:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 06:39:55,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488676470] [2020-09-25 06:39:55,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:55,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:39:55,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571806207] [2020-09-25 06:39:55,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:39:55,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:55,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:39:55,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:55,102 INFO L87 Difference]: Start difference. First operand 5034 states and 6371 transitions. Second operand 5 states.