/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=BIGGEST --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 [2020-09-24 20:27:53,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:27:53,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:27:53,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:27:53,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:27:53,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:27:53,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:27:53,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:27:53,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:27:53,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:27:53,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:27:53,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:27:53,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:27:53,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:27:53,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:27:53,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:27:53,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:27:53,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:27:53,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:27:53,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:27:53,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:27:53,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:27:53,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:27:53,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:27:53,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:27:53,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:27:53,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:27:53,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:27:53,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:27:53,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:27:53,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:27:53,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:27:53,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:27:53,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:27:53,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:27:53,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:27:53,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:27:53,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:27:53,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:27:53,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:27:53,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:27:53,669 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 [2020-09-24 20:27:53,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:27:53,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:27:53,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:27:53,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:27:53,721 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:27:53,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:27:53,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:27:53,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:27:53,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:27:53,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:27:53,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:27:53,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:27:53,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:27:53,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:27:53,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:27:53,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:27:53,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:27:53,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:27:53,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:27:53,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:27:53,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:27:53,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:27:53,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:27:53,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:27:53,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:27:53,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:27:53,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:27:53,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:27:53,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:27:53,729 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:27:54,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:27:54,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:27:54,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:27:54,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:27:54,210 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:27:54,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-24 20:27:54,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9e5da00/c378564ded41427c9d60c3e393398b27/FLAGebbd22b38 [2020-09-24 20:27:54,913 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:27:54,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_12.cil.c [2020-09-24 20:27:54,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9e5da00/c378564ded41427c9d60c3e393398b27/FLAGebbd22b38 [2020-09-24 20:27:55,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9e5da00/c378564ded41427c9d60c3e393398b27 [2020-09-24 20:27:55,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:27:55,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:27:55,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:27:55,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:27:55,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:27:55,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55, skipping insertion in model container [2020-09-24 20:27:55,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:27:55,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:27:55,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:27:55,682 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:27:55,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:27:55,874 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:27:55,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55 WrapperNode [2020-09-24 20:27:55,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:27:55,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:27:55,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:27:55,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:27:55,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (1/1) ... [2020-09-24 20:27:55,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:27:55,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:27:55,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:27:55,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:27:55,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (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 [2020-09-24 20:27:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:27:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:27:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-24 20:27:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:27:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:27:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:27:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:27:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 20:27:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-24 20:27:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-24 20:27:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:27:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:27:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:27:56,256 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 20:27:57,036 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-24 20:27:57,037 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-24 20:27:57,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:27:57,056 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:27:57,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:27:57 BoogieIcfgContainer [2020-09-24 20:27:57,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:27:57,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:27:57,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:27:57,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:27:57,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:27:55" (1/3) ... [2020-09-24 20:27:57,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139afcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:27:57, skipping insertion in model container [2020-09-24 20:27:57,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:55" (2/3) ... [2020-09-24 20:27:57,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139afcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:27:57, skipping insertion in model container [2020-09-24 20:27:57,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:27:57" (3/3) ... [2020-09-24 20:27:57,078 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_12.cil.c [2020-09-24 20:27:57,089 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:27:57,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:27:57,122 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:27:57,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:27:57,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:27:57,159 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:27:57,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:27:57,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:27:57,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:27:57,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:27:57,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:27:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states. [2020-09-24 20:27:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 20:27:57,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:57,227 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] [2020-09-24 20:27:57,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:57,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:57,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1996743066, now seen corresponding path program 1 times [2020-09-24 20:27:57,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:57,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811689047] [2020-09-24 20:27:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:57,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:58,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:59,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:59,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 20:27:59,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:27:59,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-09-24 20:27:59,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:27:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 20:27:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-24 20:27:59,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:27:59,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:59,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:59,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:59,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:27:59,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:27:59,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811689047] [2020-09-24 20:27:59,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:27:59,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:27:59,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394442210] [2020-09-24 20:27:59,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:27:59,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:59,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:27:59,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:27:59,329 INFO L87 Difference]: Start difference. First operand 471 states. Second operand 7 states. [2020-09-24 20:28:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:00,185 INFO L93 Difference]: Finished difference Result 1173 states and 1551 transitions. [2020-09-24 20:28:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:28:00,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-09-24 20:28:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:00,214 INFO L225 Difference]: With dead ends: 1173 [2020-09-24 20:28:00,215 INFO L226 Difference]: Without dead ends: 767 [2020-09-24 20:28:00,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:28:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-09-24 20:28:00,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 738. [2020-09-24 20:28:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-24 20:28:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 920 transitions. [2020-09-24 20:28:00,334 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 920 transitions. Word has length 161 [2020-09-24 20:28:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:00,335 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 920 transitions. [2020-09-24 20:28:00,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:28:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 920 transitions. [2020-09-24 20:28:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 20:28:00,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:00,342 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] [2020-09-24 20:28:00,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:28:00,343 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:00,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1172377495, now seen corresponding path program 1 times [2020-09-24 20:28:00,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:00,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682841158] [2020-09-24 20:28:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:00,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:00,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 20:28:00,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-24 20:28:00,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 20:28:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-24 20:28:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:01,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:01,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:01,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:01,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:01,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:01,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682841158] [2020-09-24 20:28:01,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:01,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:28:01,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642554886] [2020-09-24 20:28:01,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:01,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:01,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:01,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:01,135 INFO L87 Difference]: Start difference. First operand 738 states and 920 transitions. Second operand 6 states. [2020-09-24 20:28:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:01,534 INFO L93 Difference]: Finished difference Result 1483 states and 1931 transitions. [2020-09-24 20:28:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:28:01,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-09-24 20:28:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:01,542 INFO L225 Difference]: With dead ends: 1483 [2020-09-24 20:28:01,542 INFO L226 Difference]: Without dead ends: 884 [2020-09-24 20:28:01,545 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 [2020-09-24 20:28:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-24 20:28:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 848. [2020-09-24 20:28:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-09-24 20:28:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1105 transitions. [2020-09-24 20:28:01,588 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1105 transitions. Word has length 176 [2020-09-24 20:28:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:01,588 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1105 transitions. [2020-09-24 20:28:01,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1105 transitions. [2020-09-24 20:28:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 20:28:01,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:01,593 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] [2020-09-24 20:28:01,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:28:01,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:01,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1596716702, now seen corresponding path program 1 times [2020-09-24 20:28:01,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:01,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116359669] [2020-09-24 20:28:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:01,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:01,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:02,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:02,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 20:28:02,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-09-24 20:28:02,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 20:28:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-24 20:28:02,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:02,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116359669] [2020-09-24 20:28:02,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:02,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:28:02,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670900477] [2020-09-24 20:28:02,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:02,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:02,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:02,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:02,456 INFO L87 Difference]: Start difference. First operand 848 states and 1105 transitions. Second operand 6 states. [2020-09-24 20:28:02,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:02,803 INFO L93 Difference]: Finished difference Result 1628 states and 2180 transitions. [2020-09-24 20:28:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:28:02,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-09-24 20:28:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:02,809 INFO L225 Difference]: With dead ends: 1628 [2020-09-24 20:28:02,810 INFO L226 Difference]: Without dead ends: 919 [2020-09-24 20:28:02,811 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 [2020-09-24 20:28:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-09-24 20:28:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 883. [2020-09-24 20:28:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-09-24 20:28:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1169 transitions. [2020-09-24 20:28:02,852 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1169 transitions. Word has length 177 [2020-09-24 20:28:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:02,852 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1169 transitions. [2020-09-24 20:28:02,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1169 transitions. [2020-09-24 20:28:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 20:28:02,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:02,856 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:28:02,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:28:02,856 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:02,857 INFO L82 PathProgramCache]: Analyzing trace with hash 318370268, now seen corresponding path program 1 times [2020-09-24 20:28:02,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:02,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893690059] [2020-09-24 20:28:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:02,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:07,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:07,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 20:28:07,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:28:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4949 [2020-09-24 20:28:07,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:07,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:28:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 20:28:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:28:07,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:07,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:07,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:07,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:28:07,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:28:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:08,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893690059] [2020-09-24 20:28:08,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:08,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:28:08,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609364972] [2020-09-24 20:28:08,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:08,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:08,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:08,013 INFO L87 Difference]: Start difference. First operand 883 states and 1169 transitions. Second operand 6 states. [2020-09-24 20:28:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:08,811 INFO L93 Difference]: Finished difference Result 2473 states and 3353 transitions. [2020-09-24 20:28:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:28:08,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2020-09-24 20:28:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:08,824 INFO L225 Difference]: With dead ends: 2473 [2020-09-24 20:28:08,825 INFO L226 Difference]: Without dead ends: 1729 [2020-09-24 20:28:08,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:28:08,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-09-24 20:28:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 919. [2020-09-24 20:28:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-09-24 20:28:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1221 transitions. [2020-09-24 20:28:08,898 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1221 transitions. Word has length 185 [2020-09-24 20:28:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:08,899 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1221 transitions. [2020-09-24 20:28:08,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1221 transitions. [2020-09-24 20:28:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 20:28:08,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:08,906 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] [2020-09-24 20:28:08,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:28:08,907 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:08,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1444233063, now seen corresponding path program 1 times [2020-09-24 20:28:08,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:08,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946866293] [2020-09-24 20:28:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:08,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:09,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:09,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:11,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 20:28:11,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-09-24 20:28:11,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 20:28:11,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 20:28:11,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:11,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:11,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:11,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:11,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 20:28:11,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946866293] [2020-09-24 20:28:11,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:11,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:28:11,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490804169] [2020-09-24 20:28:11,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:11,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:11,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:11,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:11,409 INFO L87 Difference]: Start difference. First operand 919 states and 1221 transitions. Second operand 6 states. [2020-09-24 20:28:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:11,767 INFO L93 Difference]: Finished difference Result 1804 states and 2441 transitions. [2020-09-24 20:28:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:28:11,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-09-24 20:28:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:11,773 INFO L225 Difference]: With dead ends: 1804 [2020-09-24 20:28:11,774 INFO L226 Difference]: Without dead ends: 1022 [2020-09-24 20:28:11,776 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 [2020-09-24 20:28:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-09-24 20:28:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 986. [2020-09-24 20:28:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-09-24 20:28:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1296 transitions. [2020-09-24 20:28:11,815 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1296 transitions. Word has length 190 [2020-09-24 20:28:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:11,815 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1296 transitions. [2020-09-24 20:28:11,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1296 transitions. [2020-09-24 20:28:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 20:28:11,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:11,819 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] [2020-09-24 20:28:11,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:28:11,820 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1612600266, now seen corresponding path program 1 times [2020-09-24 20:28:11,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:11,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723839623] [2020-09-24 20:28:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:11,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 20:28:13,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1261 [2020-09-24 20:28:13,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 20:28:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-24 20:28:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:13,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:13,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:13,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:28:13,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723839623] [2020-09-24 20:28:13,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:13,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:28:13,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155013047] [2020-09-24 20:28:13,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:13,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:13,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:13,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:13,251 INFO L87 Difference]: Start difference. First operand 986 states and 1296 transitions. Second operand 6 states. [2020-09-24 20:28:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:13,617 INFO L93 Difference]: Finished difference Result 1894 states and 2527 transitions. [2020-09-24 20:28:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:28:13,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2020-09-24 20:28:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:13,622 INFO L225 Difference]: With dead ends: 1894 [2020-09-24 20:28:13,623 INFO L226 Difference]: Without dead ends: 1034 [2020-09-24 20:28:13,625 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 [2020-09-24 20:28:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-09-24 20:28:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1018. [2020-09-24 20:28:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-09-24 20:28:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1324 transitions. [2020-09-24 20:28:13,667 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1324 transitions. Word has length 197 [2020-09-24 20:28:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:13,667 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1324 transitions. [2020-09-24 20:28:13,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1324 transitions. [2020-09-24 20:28:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 20:28:13,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:13,671 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] [2020-09-24 20:28:13,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:28:13,672 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:13,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1450619668, now seen corresponding path program 1 times [2020-09-24 20:28:13,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:13,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468638079] [2020-09-24 20:28:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:13,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 20:28:14,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-09-24 20:28:14,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-24 20:28:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:28:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:14,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:14,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:14,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:14,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:14,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468638079] [2020-09-24 20:28:14,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:14,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 20:28:14,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855401653] [2020-09-24 20:28:14,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:28:14,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:14,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:28:14,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:14,997 INFO L87 Difference]: Start difference. First operand 1018 states and 1324 transitions. Second operand 5 states. [2020-09-24 20:28:15,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,696 INFO L93 Difference]: Finished difference Result 2967 states and 3942 transitions. [2020-09-24 20:28:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:28:15,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-09-24 20:28:15,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,713 INFO L225 Difference]: With dead ends: 2967 [2020-09-24 20:28:15,713 INFO L226 Difference]: Without dead ends: 2088 [2020-09-24 20:28:15,721 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 [2020-09-24 20:28:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2020-09-24 20:28:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1079. [2020-09-24 20:28:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-09-24 20:28:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1400 transitions. [2020-09-24 20:28:15,824 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1400 transitions. Word has length 199 [2020-09-24 20:28:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,825 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1400 transitions. [2020-09-24 20:28:15,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:28:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1400 transitions. [2020-09-24 20:28:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 20:28:15,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:28:15,834 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1023654951, now seen corresponding path program 1 times [2020-09-24 20:28:15,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160195543] [2020-09-24 20:28:15,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 20:28:17,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-09-24 20:28:17,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-24 20:28:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:28:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:17,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:17,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:17,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:17,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:17,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:28:17,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160195543] [2020-09-24 20:28:17,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:17,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 20:28:17,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824462993] [2020-09-24 20:28:17,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:28:17,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:17,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:28:17,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:17,141 INFO L87 Difference]: Start difference. First operand 1079 states and 1400 transitions. Second operand 5 states. [2020-09-24 20:28:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,730 INFO L93 Difference]: Finished difference Result 3312 states and 4405 transitions. [2020-09-24 20:28:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:28:17,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-09-24 20:28:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,743 INFO L225 Difference]: With dead ends: 3312 [2020-09-24 20:28:17,743 INFO L226 Difference]: Without dead ends: 2342 [2020-09-24 20:28:17,746 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 [2020-09-24 20:28:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-09-24 20:28:17,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 1182. [2020-09-24 20:28:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-09-24 20:28:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1524 transitions. [2020-09-24 20:28:17,813 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1524 transitions. Word has length 226 [2020-09-24 20:28:17,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,813 INFO L479 AbstractCegarLoop]: Abstraction has 1182 states and 1524 transitions. [2020-09-24 20:28:17,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:28:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1524 transitions. [2020-09-24 20:28:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 20:28:17,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:17,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:17,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:28:17,819 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:17,819 INFO L82 PathProgramCache]: Analyzing trace with hash 961326215, now seen corresponding path program 1 times [2020-09-24 20:28:17,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:17,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238428640] [2020-09-24 20:28:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:19,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 20:28:19,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-09-24 20:28:19,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:19,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-24 20:28:19,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:28:19,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:19,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:19,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:19,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:28:19,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238428640] [2020-09-24 20:28:19,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:19,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 20:28:19,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500545615] [2020-09-24 20:28:19,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:28:19,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:19,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:28:19,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:19,111 INFO L87 Difference]: Start difference. First operand 1182 states and 1524 transitions. Second operand 5 states. [2020-09-24 20:28:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:19,613 INFO L93 Difference]: Finished difference Result 3526 states and 4615 transitions. [2020-09-24 20:28:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:28:19,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-09-24 20:28:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:19,625 INFO L225 Difference]: With dead ends: 3526 [2020-09-24 20:28:19,625 INFO L226 Difference]: Without dead ends: 2453 [2020-09-24 20:28:19,629 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 [2020-09-24 20:28:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2020-09-24 20:28:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 1250. [2020-09-24 20:28:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-09-24 20:28:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1606 transitions. [2020-09-24 20:28:19,692 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1606 transitions. Word has length 226 [2020-09-24 20:28:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:19,693 INFO L479 AbstractCegarLoop]: Abstraction has 1250 states and 1606 transitions. [2020-09-24 20:28:19,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:28:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1606 transitions. [2020-09-24 20:28:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-24 20:28:19,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:19,698 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2020-09-24 20:28:19,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:28:19,698 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:19,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1080398571, now seen corresponding path program 1 times [2020-09-24 20:28:19,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:19,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011785368] [2020-09-24 20:28:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-24 20:28:21,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:28:21,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2084 [2020-09-24 20:28:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:28:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-09-24 20:28:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:28:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:21,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:21,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:21,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:21,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:21,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 20:28:21,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011785368] [2020-09-24 20:28:21,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:21,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 20:28:21,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125101931] [2020-09-24 20:28:21,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:28:21,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:21,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:28:21,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:21,976 INFO L87 Difference]: Start difference. First operand 1250 states and 1606 transitions. Second operand 5 states. [2020-09-24 20:28:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:22,639 INFO L93 Difference]: Finished difference Result 4037 states and 5244 transitions. [2020-09-24 20:28:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:28:22,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-09-24 20:28:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:22,653 INFO L225 Difference]: With dead ends: 4037 [2020-09-24 20:28:22,653 INFO L226 Difference]: Without dead ends: 2926 [2020-09-24 20:28:22,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:28:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-09-24 20:28:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1265. [2020-09-24 20:28:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-09-24 20:28:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1629 transitions. [2020-09-24 20:28:22,723 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1629 transitions. Word has length 256 [2020-09-24 20:28:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:22,724 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 1629 transitions. [2020-09-24 20:28:22,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:28:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1629 transitions. [2020-09-24 20:28:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-24 20:28:22,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:22,732 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:22,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:28:22,733 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1200611301, now seen corresponding path program 1 times [2020-09-24 20:28:22,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:22,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443714555] [2020-09-24 20:28:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:24,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-24 20:28:24,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:28:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-09-24 20:28:24,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-09-24 20:28:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:28:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:24,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:24,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:24,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 20:28:24,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443714555] [2020-09-24 20:28:24,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:24,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:24,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614298386] [2020-09-24 20:28:24,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:24,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:24,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:24,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:24,330 INFO L87 Difference]: Start difference. First operand 1265 states and 1629 transitions. Second operand 4 states. [2020-09-24 20:28:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:24,781 INFO L93 Difference]: Finished difference Result 3766 states and 4929 transitions. [2020-09-24 20:28:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:24,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 266 [2020-09-24 20:28:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:24,796 INFO L225 Difference]: With dead ends: 3766 [2020-09-24 20:28:24,796 INFO L226 Difference]: Without dead ends: 2606 [2020-09-24 20:28:24,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2020-09-24 20:28:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1307. [2020-09-24 20:28:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-09-24 20:28:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1678 transitions. [2020-09-24 20:28:24,871 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1678 transitions. Word has length 266 [2020-09-24 20:28:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:24,872 INFO L479 AbstractCegarLoop]: Abstraction has 1307 states and 1678 transitions. [2020-09-24 20:28:24,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1678 transitions. [2020-09-24 20:28:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-24 20:28:24,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:24,880 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:24,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:28:24,881 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:24,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1558111114, now seen corresponding path program 1 times [2020-09-24 20:28:24,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:24,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859273986] [2020-09-24 20:28:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:25,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-09-24 20:28:25,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-09-24 20:28:25,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 238 [2020-09-24 20:28:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 20:28:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:25,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:25,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:25,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:25,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:25,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:25,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:25,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:25,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 20:28:25,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859273986] [2020-09-24 20:28:25,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:25,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:25,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760527293] [2020-09-24 20:28:25,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:25,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:25,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:25,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:25,964 INFO L87 Difference]: Start difference. First operand 1307 states and 1678 transitions. Second operand 4 states. [2020-09-24 20:28:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:26,578 INFO L93 Difference]: Finished difference Result 3876 states and 5079 transitions. [2020-09-24 20:28:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:26,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2020-09-24 20:28:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:26,595 INFO L225 Difference]: With dead ends: 3876 [2020-09-24 20:28:26,595 INFO L226 Difference]: Without dead ends: 2640 [2020-09-24 20:28:26,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-09-24 20:28:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 1366. [2020-09-24 20:28:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-09-24 20:28:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1744 transitions. [2020-09-24 20:28:26,686 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1744 transitions. Word has length 285 [2020-09-24 20:28:26,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:26,687 INFO L479 AbstractCegarLoop]: Abstraction has 1366 states and 1744 transitions. [2020-09-24 20:28:26,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1744 transitions. [2020-09-24 20:28:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-24 20:28:26,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:26,697 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:26,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:28:26,697 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:26,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:26,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1937050996, now seen corresponding path program 1 times [2020-09-24 20:28:26,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:26,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216551127] [2020-09-24 20:28:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:31,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:31,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-09-24 20:28:31,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:28:31,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4315 [2020-09-24 20:28:31,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-09-24 20:28:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:28:31,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:31,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:31,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:31,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:31,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:31,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:31,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-24 20:28:31,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216551127] [2020-09-24 20:28:31,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:31,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:31,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019481025] [2020-09-24 20:28:31,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:31,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:31,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:31,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:31,200 INFO L87 Difference]: Start difference. First operand 1366 states and 1744 transitions. Second operand 4 states. [2020-09-24 20:28:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:31,634 INFO L93 Difference]: Finished difference Result 4005 states and 5204 transitions. [2020-09-24 20:28:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:31,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2020-09-24 20:28:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:31,648 INFO L225 Difference]: With dead ends: 4005 [2020-09-24 20:28:31,648 INFO L226 Difference]: Without dead ends: 2778 [2020-09-24 20:28:31,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:28:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2020-09-24 20:28:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1410. [2020-09-24 20:28:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1410 states. [2020-09-24 20:28:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1796 transitions. [2020-09-24 20:28:31,725 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1796 transitions. Word has length 302 [2020-09-24 20:28:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:31,726 INFO L479 AbstractCegarLoop]: Abstraction has 1410 states and 1796 transitions. [2020-09-24 20:28:31,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1796 transitions. [2020-09-24 20:28:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-09-24 20:28:31,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:31,733 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:31,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:28:31,733 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1512030623, now seen corresponding path program 1 times [2020-09-24 20:28:31,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:31,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732306961] [2020-09-24 20:28:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:35,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:35,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-09-24 20:28:35,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:28:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3509 [2020-09-24 20:28:35,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:28:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 293 [2020-09-24 20:28:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:28:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:35,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:35,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:35,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:28:35,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-09-24 20:28:35,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732306961] [2020-09-24 20:28:35,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:35,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:28:35,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545702366] [2020-09-24 20:28:35,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:28:35,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:35,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:28:35,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:28:35,399 INFO L87 Difference]: Start difference. First operand 1410 states and 1796 transitions. Second operand 4 states. [2020-09-24 20:28:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:35,650 INFO L93 Difference]: Finished difference Result 2789 states and 3568 transitions. [2020-09-24 20:28:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:28:35,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 313 [2020-09-24 20:28:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:35,659 INFO L225 Difference]: With dead ends: 2789 [2020-09-24 20:28:35,659 INFO L226 Difference]: Without dead ends: 1518 [2020-09-24 20:28:35,663 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 [2020-09-24 20:28:35,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-09-24 20:28:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1358. [2020-09-24 20:28:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-09-24 20:28:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1730 transitions. [2020-09-24 20:28:35,734 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1730 transitions. Word has length 313 [2020-09-24 20:28:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:35,734 INFO L479 AbstractCegarLoop]: Abstraction has 1358 states and 1730 transitions. [2020-09-24 20:28:35,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:28:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1730 transitions. [2020-09-24 20:28:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-09-24 20:28:35,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:35,742 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:35,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 20:28:35,742 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:35,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:35,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1329812011, now seen corresponding path program 1 times [2020-09-24 20:28:35,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:35,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045284319] [2020-09-24 20:28:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:35,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:36,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking...