/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:25:59,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:25:59,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:25:59,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:25:59,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:25:59,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:25:59,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:25:59,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:25:59,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:25:59,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:25:59,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:25:59,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:25:59,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:25:59,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:25:59,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:25:59,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:25:59,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:25:59,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:25:59,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:25:59,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:25:59,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:25:59,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:25:59,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:25:59,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:25:59,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:25:59,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:25:59,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:25:59,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:25:59,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:25:59,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:25:59,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:25:59,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:25:59,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:25:59,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:25:59,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:25:59,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:25:59,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:25:59,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:25:59,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:25:59,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:25:59,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:25:59,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:25:59,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:25:59,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:25:59,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:25:59,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:25:59,613 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:25:59,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:25:59,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:25:59,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:25:59,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:25:59,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:25:59,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:25:59,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:25:59,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:25:59,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:25:59,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:25:59,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:25:59,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:25:59,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:25:59,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:25:59,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:25:59,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:25:59,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:25:59,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:25:59,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:25:59,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:25:59,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:25:59,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:25:59,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:25:59,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:25:59,618 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:26:00,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:26:00,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:26:00,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:26:00,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:26:00,130 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:26:00,132 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 13:26:00,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64178b979/380a5ccbf3134a6988818405e09f398c/FLAG757b2be75 [2020-09-25 13:26:00,780 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:26:00,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_14.cil.c [2020-09-25 13:26:00,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64178b979/380a5ccbf3134a6988818405e09f398c/FLAG757b2be75 [2020-09-25 13:26:01,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64178b979/380a5ccbf3134a6988818405e09f398c [2020-09-25 13:26:01,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:26:01,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:26:01,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:01,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:26:01,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:26:01,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ee78df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01, skipping insertion in model container [2020-09-25 13:26:01,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:26:01,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:26:01,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:01,512 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:26:01,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:01,690 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:26:01,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01 WrapperNode [2020-09-25 13:26:01,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:01,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:26:01,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:26:01,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:26:01,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (1/1) ... [2020-09-25 13:26:01,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:26:01,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:26:01,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:26:01,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:26:01,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:26:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:26:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:26:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-09-25 13:26:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:26:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:26:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 13:26:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:26:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 13:26:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-09-25 13:26:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:26:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:26:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:26:02,129 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 13:26:02,800 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-09-25 13:26:02,801 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-09-25 13:26:02,818 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:26:02,819 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:26:02,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:02 BoogieIcfgContainer [2020-09-25 13:26:02,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:26:02,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:26:02,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:26:02,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:26:02,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:26:01" (1/3) ... [2020-09-25 13:26:02,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8b3635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:02, skipping insertion in model container [2020-09-25 13:26:02,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:01" (2/3) ... [2020-09-25 13:26:02,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8b3635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:02, skipping insertion in model container [2020-09-25 13:26:02,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:02" (3/3) ... [2020-09-25 13:26:02,838 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2020-09-25 13:26:02,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:26:02,862 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:26:02,882 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:26:02,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:26:02,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:26:02,916 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:26:02,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:26:02,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:26:02,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:26:02,916 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:26:02,916 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:26:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states. [2020-09-25 13:26:02,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:26:02,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:02,968 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] [2020-09-25 13:26:02,968 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:02,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1268045474, now seen corresponding path program 1 times [2020-09-25 13:26:02,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:02,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141955193] [2020-09-25 13:26:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:04,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:04,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:26:04,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1354 [2020-09-25 13:26:04,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:04,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:26:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:26:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 13:26:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:26:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:04,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:04,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:04,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:04,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:04,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:04,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141955193] [2020-09-25 13:26:04,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:04,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:26:04,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457001112] [2020-09-25 13:26:04,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:26:04,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:04,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:26:04,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:26:04,922 INFO L87 Difference]: Start difference. First operand 426 states. Second operand 6 states. [2020-09-25 13:26:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:05,426 INFO L93 Difference]: Finished difference Result 802 states and 1073 transitions. [2020-09-25 13:26:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:26:05,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-25 13:26:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:05,451 INFO L225 Difference]: With dead ends: 802 [2020-09-25 13:26:05,451 INFO L226 Difference]: Without dead ends: 459 [2020-09-25 13:26:05,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:26:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-25 13:26:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2020-09-25 13:26:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-09-25 13:26:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 535 transitions. [2020-09-25 13:26:05,548 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 535 transitions. Word has length 158 [2020-09-25 13:26:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:05,549 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 535 transitions. [2020-09-25 13:26:05,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:26:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 535 transitions. [2020-09-25 13:26:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 13:26:05,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:05,554 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] [2020-09-25 13:26:05,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:26:05,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:05,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:05,555 INFO L82 PathProgramCache]: Analyzing trace with hash 796395907, now seen corresponding path program 1 times [2020-09-25 13:26:05,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:05,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11395446] [2020-09-25 13:26:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 13:26:07,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-09-25 13:26:07,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:26:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:26:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 13:26:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:07,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:07,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:07,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:07,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11395446] [2020-09-25 13:26:07,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:07,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:26:07,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801427963] [2020-09-25 13:26:07,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:26:07,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:07,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:26:07,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:26:07,376 INFO L87 Difference]: Start difference. First operand 444 states and 535 transitions. Second operand 6 states. [2020-09-25 13:26:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:07,639 INFO L93 Difference]: Finished difference Result 783 states and 972 transitions. [2020-09-25 13:26:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:26:07,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-25 13:26:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:07,644 INFO L225 Difference]: With dead ends: 783 [2020-09-25 13:26:07,644 INFO L226 Difference]: Without dead ends: 482 [2020-09-25 13:26:07,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:26:07,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-25 13:26:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 469. [2020-09-25 13:26:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-09-25 13:26:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 568 transitions. [2020-09-25 13:26:07,678 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 568 transitions. Word has length 166 [2020-09-25 13:26:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:07,679 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 568 transitions. [2020-09-25 13:26:07,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:26:07,679 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 568 transitions. [2020-09-25 13:26:07,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 13:26:07,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:07,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:07,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:26:07,684 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:07,684 INFO L82 PathProgramCache]: Analyzing trace with hash 467731815, now seen corresponding path program 1 times [2020-09-25 13:26:07,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:07,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542025596] [2020-09-25 13:26:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:08,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:08,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:26:08,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:08,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-09-25 13:26:08,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:08,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:08,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:26:08,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:26:08,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 13:26:08,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:08,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:08,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:08,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:08,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542025596] [2020-09-25 13:26:08,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:08,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:26:08,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965999818] [2020-09-25 13:26:08,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:26:08,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:08,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:26:08,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:26:08,928 INFO L87 Difference]: Start difference. First operand 469 states and 568 transitions. Second operand 7 states. [2020-09-25 13:26:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:09,259 INFO L93 Difference]: Finished difference Result 852 states and 1065 transitions. [2020-09-25 13:26:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:26:09,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 13:26:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:09,264 INFO L225 Difference]: With dead ends: 852 [2020-09-25 13:26:09,264 INFO L226 Difference]: Without dead ends: 526 [2020-09-25 13:26:09,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:26:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-25 13:26:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 491. [2020-09-25 13:26:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-25 13:26:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 598 transitions. [2020-09-25 13:26:09,283 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 598 transitions. Word has length 167 [2020-09-25 13:26:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:09,283 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 598 transitions. [2020-09-25 13:26:09,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:26:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 598 transitions. [2020-09-25 13:26:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 13:26:09,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:09,288 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:26:09,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:26:09,289 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:09,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:09,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1852412155, now seen corresponding path program 1 times [2020-09-25 13:26:09,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:09,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365801769] [2020-09-25 13:26:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:09,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:10,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 13:26:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:26:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-09-25 13:26:10,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:10,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-25 13:26:10,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:26:10,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:10,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:10,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:10,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:10,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:10,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:10,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:10,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:26:10,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365801769] [2020-09-25 13:26:10,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:10,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:10,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990849712] [2020-09-25 13:26:10,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:10,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:10,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:10,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:10,573 INFO L87 Difference]: Start difference. First operand 491 states and 598 transitions. Second operand 3 states. [2020-09-25 13:26:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:10,626 INFO L93 Difference]: Finished difference Result 855 states and 1066 transitions. [2020-09-25 13:26:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:10,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2020-09-25 13:26:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:10,630 INFO L225 Difference]: With dead ends: 855 [2020-09-25 13:26:10,630 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 13:26:10,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 13:26:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-09-25 13:26:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-25 13:26:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 614 transitions. [2020-09-25 13:26:10,649 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 614 transitions. Word has length 180 [2020-09-25 13:26:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:10,650 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 614 transitions. [2020-09-25 13:26:10,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 614 transitions. [2020-09-25 13:26:10,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 13:26:10,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:10,653 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:26:10,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:26:10,654 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:10,654 INFO L82 PathProgramCache]: Analyzing trace with hash -309243059, now seen corresponding path program 1 times [2020-09-25 13:26:10,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:10,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231759728] [2020-09-25 13:26:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 13:26:11,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-09-25 13:26:11,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-25 13:26:11,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:26:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:26:11,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:11,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:11,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:11,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:11,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231759728] [2020-09-25 13:26:11,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:11,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:11,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975090163] [2020-09-25 13:26:11,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:11,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:11,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:11,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:11,590 INFO L87 Difference]: Start difference. First operand 507 states and 614 transitions. Second operand 3 states. [2020-09-25 13:26:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:11,630 INFO L93 Difference]: Finished difference Result 855 states and 1065 transitions. [2020-09-25 13:26:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:11,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-09-25 13:26:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:11,635 INFO L225 Difference]: With dead ends: 855 [2020-09-25 13:26:11,635 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 13:26:11,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 13:26:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2020-09-25 13:26:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-09-25 13:26:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 610 transitions. [2020-09-25 13:26:11,656 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 610 transitions. Word has length 181 [2020-09-25 13:26:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:11,657 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 610 transitions. [2020-09-25 13:26:11,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 610 transitions. [2020-09-25 13:26:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 13:26:11,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:11,660 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] [2020-09-25 13:26:11,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:26:11,660 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:11,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:11,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1474841658, now seen corresponding path program 1 times [2020-09-25 13:26:11,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:11,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685692822] [2020-09-25 13:26:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:12,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 13:26:12,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-09-25 13:26:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:12,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-09-25 13:26:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:26:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:12,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:12,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:12,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:12,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:12,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:12,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:12,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:12,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685692822] [2020-09-25 13:26:12,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:12,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:12,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660080102] [2020-09-25 13:26:12,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:12,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:12,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:12,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:12,374 INFO L87 Difference]: Start difference. First operand 507 states and 610 transitions. Second operand 3 states. [2020-09-25 13:26:12,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:12,403 INFO L93 Difference]: Finished difference Result 862 states and 1065 transitions. [2020-09-25 13:26:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:12,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-09-25 13:26:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:12,406 INFO L225 Difference]: With dead ends: 862 [2020-09-25 13:26:12,407 INFO L226 Difference]: Without dead ends: 514 [2020-09-25 13:26:12,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-25 13:26:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 513. [2020-09-25 13:26:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 13:26:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 613 transitions. [2020-09-25 13:26:12,422 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 613 transitions. Word has length 182 [2020-09-25 13:26:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:12,423 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 613 transitions. [2020-09-25 13:26:12,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 613 transitions. [2020-09-25 13:26:12,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 13:26:12,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:12,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:12,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:26:12,426 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:12,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1516170884, now seen corresponding path program 1 times [2020-09-25 13:26:12,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:12,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804827477] [2020-09-25 13:26:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 13:26:13,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-09-25 13:26:13,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-25 13:26:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:26:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:13,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:13,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:13,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 13:26:13,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804827477] [2020-09-25 13:26:13,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:13,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:13,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109098136] [2020-09-25 13:26:13,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:13,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:13,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:13,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:13,439 INFO L87 Difference]: Start difference. First operand 513 states and 613 transitions. Second operand 3 states. [2020-09-25 13:26:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:13,473 INFO L93 Difference]: Finished difference Result 1226 states and 1509 transitions. [2020-09-25 13:26:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:13,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-09-25 13:26:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:13,480 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 13:26:13,480 INFO L226 Difference]: Without dead ends: 872 [2020-09-25 13:26:13,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:13,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-09-25 13:26:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2020-09-25 13:26:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-09-25 13:26:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1054 transitions. [2020-09-25 13:26:13,514 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1054 transitions. Word has length 185 [2020-09-25 13:26:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:13,515 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1054 transitions. [2020-09-25 13:26:13,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:13,516 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1054 transitions. [2020-09-25 13:26:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 13:26:13,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:13,521 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] [2020-09-25 13:26:13,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:26:13,521 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:13,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1645719778, now seen corresponding path program 1 times [2020-09-25 13:26:13,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:13,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247559299] [2020-09-25 13:26:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:15,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 13:26:15,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:26:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1507 [2020-09-25 13:26:15,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:15,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-25 13:26:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:26:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:26:15,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:15,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:15,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:15,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:15,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:15,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:15,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:15,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 13:26:15,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247559299] [2020-09-25 13:26:15,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:15,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:15,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189650010] [2020-09-25 13:26:15,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:15,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:15,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:15,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:15,206 INFO L87 Difference]: Start difference. First operand 870 states and 1054 transitions. Second operand 3 states. [2020-09-25 13:26:15,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:15,271 INFO L93 Difference]: Finished difference Result 2271 states and 2812 transitions. [2020-09-25 13:26:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:15,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 13:26:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:15,284 INFO L225 Difference]: With dead ends: 2271 [2020-09-25 13:26:15,284 INFO L226 Difference]: Without dead ends: 1577 [2020-09-25 13:26:15,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:15,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-09-25 13:26:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1235. [2020-09-25 13:26:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-09-25 13:26:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1509 transitions. [2020-09-25 13:26:15,361 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1509 transitions. Word has length 187 [2020-09-25 13:26:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:15,362 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1509 transitions. [2020-09-25 13:26:15,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1509 transitions. [2020-09-25 13:26:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 13:26:15,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:15,367 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] [2020-09-25 13:26:15,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:26:15,368 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:15,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:15,368 INFO L82 PathProgramCache]: Analyzing trace with hash -293442268, now seen corresponding path program 1 times [2020-09-25 13:26:15,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:15,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414308190] [2020-09-25 13:26:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:15,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:15,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:16,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:16,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:16,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 13:26:16,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:26:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-09-25 13:26:16,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:16,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 13:26:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 13:26:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:16,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:16,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:16,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:16,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:16,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:16,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:16,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414308190] [2020-09-25 13:26:16,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:16,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:16,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159894591] [2020-09-25 13:26:16,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:16,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:16,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:16,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:16,479 INFO L87 Difference]: Start difference. First operand 1235 states and 1509 transitions. Second operand 4 states. [2020-09-25 13:26:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:16,626 INFO L93 Difference]: Finished difference Result 4399 states and 5476 transitions. [2020-09-25 13:26:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:16,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-09-25 13:26:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:16,647 INFO L225 Difference]: With dead ends: 4399 [2020-09-25 13:26:16,648 INFO L226 Difference]: Without dead ends: 3357 [2020-09-25 13:26:16,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2020-09-25 13:26:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2291. [2020-09-25 13:26:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-09-25 13:26:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2808 transitions. [2020-09-25 13:26:16,802 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2808 transitions. Word has length 187 [2020-09-25 13:26:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:16,802 INFO L479 AbstractCegarLoop]: Abstraction has 2291 states and 2808 transitions. [2020-09-25 13:26:16,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2808 transitions. [2020-09-25 13:26:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 13:26:16,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:16,810 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] [2020-09-25 13:26:16,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:26:16,811 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1498778359, now seen corresponding path program 1 times [2020-09-25 13:26:16,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:16,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918367431] [2020-09-25 13:26:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:16,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 13:26:17,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 13:26:17,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:17,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-25 13:26:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:26:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:17,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:17,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:17,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:17,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:17,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:17,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:17,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:26:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:17,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918367431] [2020-09-25 13:26:17,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:17,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:17,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270844418] [2020-09-25 13:26:17,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:17,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:17,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:17,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:17,400 INFO L87 Difference]: Start difference. First operand 2291 states and 2808 transitions. Second operand 3 states. [2020-09-25 13:26:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:17,735 INFO L93 Difference]: Finished difference Result 4698 states and 5955 transitions. [2020-09-25 13:26:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:17,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-09-25 13:26:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:17,750 INFO L225 Difference]: With dead ends: 4698 [2020-09-25 13:26:17,751 INFO L226 Difference]: Without dead ends: 2632 [2020-09-25 13:26:17,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-09-25 13:26:17,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2588. [2020-09-25 13:26:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2020-09-25 13:26:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3153 transitions. [2020-09-25 13:26:17,891 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3153 transitions. Word has length 187 [2020-09-25 13:26:17,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:17,891 INFO L479 AbstractCegarLoop]: Abstraction has 2588 states and 3153 transitions. [2020-09-25 13:26:17,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3153 transitions. [2020-09-25 13:26:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 13:26:17,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:17,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:17,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:26:17,897 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:17,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:17,897 INFO L82 PathProgramCache]: Analyzing trace with hash -425975215, now seen corresponding path program 1 times [2020-09-25 13:26:17,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:17,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234529654] [2020-09-25 13:26:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:18,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:18,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 13:26:18,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 13:26:18,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:18,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 13:26:18,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:26:18,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:18,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:18,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:18,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:18,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:18,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:18,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234529654] [2020-09-25 13:26:18,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:18,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:18,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340400866] [2020-09-25 13:26:18,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:18,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:18,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:18,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:18,268 INFO L87 Difference]: Start difference. First operand 2588 states and 3153 transitions. Second operand 3 states. [2020-09-25 13:26:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:18,584 INFO L93 Difference]: Finished difference Result 5297 states and 6648 transitions. [2020-09-25 13:26:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:18,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-09-25 13:26:18,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:18,598 INFO L225 Difference]: With dead ends: 5297 [2020-09-25 13:26:18,598 INFO L226 Difference]: Without dead ends: 2922 [2020-09-25 13:26:18,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-09-25 13:26:18,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2816. [2020-09-25 13:26:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2816 states. [2020-09-25 13:26:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 3484 transitions. [2020-09-25 13:26:18,696 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 3484 transitions. Word has length 189 [2020-09-25 13:26:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:18,697 INFO L479 AbstractCegarLoop]: Abstraction has 2816 states and 3484 transitions. [2020-09-25 13:26:18,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 3484 transitions. [2020-09-25 13:26:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 13:26:18,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:18,701 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] [2020-09-25 13:26:18,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:26:18,701 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:18,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:18,702 INFO L82 PathProgramCache]: Analyzing trace with hash 340252365, now seen corresponding path program 1 times [2020-09-25 13:26:18,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:18,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881714770] [2020-09-25 13:26:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:18,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:18,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:18,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:19,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 13:26:19,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-09-25 13:26:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:19,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 13:26:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:26:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:19,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:19,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:19,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:19,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:19,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:19,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:19,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:19,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881714770] [2020-09-25 13:26:19,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:19,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:19,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109594144] [2020-09-25 13:26:19,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:19,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:19,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:19,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:19,716 INFO L87 Difference]: Start difference. First operand 2816 states and 3484 transitions. Second operand 4 states. [2020-09-25 13:26:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:19,986 INFO L93 Difference]: Finished difference Result 4255 states and 5272 transitions. [2020-09-25 13:26:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:19,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-09-25 13:26:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:20,000 INFO L225 Difference]: With dead ends: 4255 [2020-09-25 13:26:20,001 INFO L226 Difference]: Without dead ends: 2930 [2020-09-25 13:26:20,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:20,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-09-25 13:26:20,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2856. [2020-09-25 13:26:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-09-25 13:26:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3535 transitions. [2020-09-25 13:26:20,100 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3535 transitions. Word has length 191 [2020-09-25 13:26:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:20,101 INFO L479 AbstractCegarLoop]: Abstraction has 2856 states and 3535 transitions. [2020-09-25 13:26:20,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3535 transitions. [2020-09-25 13:26:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:26:20,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:20,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:20,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:26:20,107 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:20,108 INFO L82 PathProgramCache]: Analyzing trace with hash -26011402, now seen corresponding path program 1 times [2020-09-25 13:26:20,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:20,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070247947] [2020-09-25 13:26:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:20,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 13:26:21,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:26:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-09-25 13:26:21,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-25 13:26:21,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:26:21,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:21,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:21,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:21,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:21,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:21,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:26:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:26:21,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070247947] [2020-09-25 13:26:21,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:21,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:21,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568753973] [2020-09-25 13:26:21,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:21,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:21,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:21,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,628 INFO L87 Difference]: Start difference. First operand 2856 states and 3535 transitions. Second operand 3 states. [2020-09-25 13:26:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:21,697 INFO L93 Difference]: Finished difference Result 4273 states and 5294 transitions. [2020-09-25 13:26:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:21,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-09-25 13:26:21,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:21,713 INFO L225 Difference]: With dead ends: 4273 [2020-09-25 13:26:21,714 INFO L226 Difference]: Without dead ends: 2973 [2020-09-25 13:26:21,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-09-25 13:26:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2887. [2020-09-25 13:26:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2887 states. [2020-09-25 13:26:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3541 transitions. [2020-09-25 13:26:21,825 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3541 transitions. Word has length 193 [2020-09-25 13:26:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:21,826 INFO L479 AbstractCegarLoop]: Abstraction has 2887 states and 3541 transitions. [2020-09-25 13:26:21,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3541 transitions. [2020-09-25 13:26:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:26:21,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:21,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:21,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:26:21,836 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:21,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1714955144, now seen corresponding path program 1 times [2020-09-25 13:26:21,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:21,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105393273] [2020-09-25 13:26:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 13:26:22,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:26:22,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-25 13:26:22,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:22,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-25 13:26:22,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:26:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:22,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:22,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:22,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:22,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:22,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:22,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:22,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105393273] [2020-09-25 13:26:22,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:22,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:22,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910084629] [2020-09-25 13:26:22,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:22,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:22,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:22,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,683 INFO L87 Difference]: Start difference. First operand 2887 states and 3541 transitions. Second operand 3 states. [2020-09-25 13:26:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:22,953 INFO L93 Difference]: Finished difference Result 6062 states and 7622 transitions. [2020-09-25 13:26:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:22,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-09-25 13:26:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:22,968 INFO L225 Difference]: With dead ends: 6062 [2020-09-25 13:26:22,969 INFO L226 Difference]: Without dead ends: 3521 [2020-09-25 13:26:22,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2020-09-25 13:26:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3423. [2020-09-25 13:26:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3423 states. [2020-09-25 13:26:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 4263 transitions. [2020-09-25 13:26:23,070 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 4263 transitions. Word has length 193 [2020-09-25 13:26:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:23,071 INFO L479 AbstractCegarLoop]: Abstraction has 3423 states and 4263 transitions. [2020-09-25 13:26:23,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 4263 transitions. [2020-09-25 13:26:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 13:26:23,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:23,075 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] [2020-09-25 13:26:23,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:26:23,076 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1073249984, now seen corresponding path program 1 times [2020-09-25 13:26:23,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:23,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728611040] [2020-09-25 13:26:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:23,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 13:26:24,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-09-25 13:26:24,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 13:26:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:26:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:24,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:24,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:24,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:24,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728611040] [2020-09-25 13:26:24,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:24,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:24,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414013818] [2020-09-25 13:26:24,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:24,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:24,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:24,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:24,154 INFO L87 Difference]: Start difference. First operand 3423 states and 4263 transitions. Second operand 4 states. [2020-09-25 13:26:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:24,420 INFO L93 Difference]: Finished difference Result 5183 states and 6467 transitions. [2020-09-25 13:26:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:24,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-09-25 13:26:24,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:24,456 INFO L225 Difference]: With dead ends: 5183 [2020-09-25 13:26:24,457 INFO L226 Difference]: Without dead ends: 3585 [2020-09-25 13:26:24,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:24,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2020-09-25 13:26:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3455. [2020-09-25 13:26:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3455 states. [2020-09-25 13:26:24,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 4295 transitions. [2020-09-25 13:26:24,572 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 4295 transitions. Word has length 196 [2020-09-25 13:26:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:24,572 INFO L479 AbstractCegarLoop]: Abstraction has 3455 states and 4295 transitions. [2020-09-25 13:26:24,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 4295 transitions. [2020-09-25 13:26:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 13:26:24,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:24,579 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:26:24,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 13:26:24,579 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:24,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1089923142, now seen corresponding path program 1 times [2020-09-25 13:26:24,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:24,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611218975] [2020-09-25 13:26:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:26,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 13:26:26,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:26:26,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1723 [2020-09-25 13:26:26,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:26,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 13:26:26,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:26:26,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:26,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:26,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:26,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:26,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:26,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:26,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611218975] [2020-09-25 13:26:26,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:26,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:26,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852738625] [2020-09-25 13:26:26,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:26,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:26,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:26,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:26,409 INFO L87 Difference]: Start difference. First operand 3455 states and 4295 transitions. Second operand 4 states. [2020-09-25 13:26:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:26,666 INFO L93 Difference]: Finished difference Result 6802 states and 8497 transitions. [2020-09-25 13:26:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:26,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-09-25 13:26:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:26,675 INFO L225 Difference]: With dead ends: 6802 [2020-09-25 13:26:26,675 INFO L226 Difference]: Without dead ends: 3691 [2020-09-25 13:26:26,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2020-09-25 13:26:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3551. [2020-09-25 13:26:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3551 states. [2020-09-25 13:26:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 4400 transitions. [2020-09-25 13:26:26,764 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 4400 transitions. Word has length 197 [2020-09-25 13:26:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:26,764 INFO L479 AbstractCegarLoop]: Abstraction has 3551 states and 4400 transitions. [2020-09-25 13:26:26,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 4400 transitions. [2020-09-25 13:26:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 13:26:26,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:26,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:26,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 13:26:26,770 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:26,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:26,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2042843034, now seen corresponding path program 1 times [2020-09-25 13:26:26,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:26,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046679089] [2020-09-25 13:26:26,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:27,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 13:26:27,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-09-25 13:26:27,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:27,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 13:26:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:26:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:27,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:27,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:27,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:27,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:27,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:27,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046679089] [2020-09-25 13:26:27,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:27,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:27,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942010954] [2020-09-25 13:26:27,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:27,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:27,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:27,822 INFO L87 Difference]: Start difference. First operand 3551 states and 4400 transitions. Second operand 4 states. [2020-09-25 13:26:28,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:28,099 INFO L93 Difference]: Finished difference Result 3996 states and 4920 transitions. [2020-09-25 13:26:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:28,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-09-25 13:26:28,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:28,109 INFO L225 Difference]: With dead ends: 3996 [2020-09-25 13:26:28,109 INFO L226 Difference]: Without dead ends: 3994 [2020-09-25 13:26:28,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2020-09-25 13:26:28,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3567. [2020-09-25 13:26:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3567 states. [2020-09-25 13:26:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 4422 transitions. [2020-09-25 13:26:28,238 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 4422 transitions. Word has length 197 [2020-09-25 13:26:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:28,239 INFO L479 AbstractCegarLoop]: Abstraction has 3567 states and 4422 transitions. [2020-09-25 13:26:28,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 4422 transitions. [2020-09-25 13:26:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 13:26:28,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:28,245 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:26:28,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 13:26:28,245 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:28,246 INFO L82 PathProgramCache]: Analyzing trace with hash 257359816, now seen corresponding path program 1 times [2020-09-25 13:26:28,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:28,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739255981] [2020-09-25 13:26:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:29,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 13:26:29,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:26:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-09-25 13:26:29,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:29,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 13:26:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:26:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:29,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:29,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:29,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:29,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:29,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:29,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:26:29,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739255981] [2020-09-25 13:26:29,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:29,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:29,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245106666] [2020-09-25 13:26:29,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:29,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:29,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:29,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:29,682 INFO L87 Difference]: Start difference. First operand 3567 states and 4422 transitions. Second operand 4 states. [2020-09-25 13:26:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:29,947 INFO L93 Difference]: Finished difference Result 3818 states and 4700 transitions. [2020-09-25 13:26:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:29,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-09-25 13:26:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:29,955 INFO L225 Difference]: With dead ends: 3818 [2020-09-25 13:26:29,955 INFO L226 Difference]: Without dead ends: 3816 [2020-09-25 13:26:29,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:26:29,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2020-09-25 13:26:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3545. [2020-09-25 13:26:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-09-25 13:26:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4394 transitions. [2020-09-25 13:26:30,042 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4394 transitions. Word has length 198 [2020-09-25 13:26:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:30,043 INFO L479 AbstractCegarLoop]: Abstraction has 3545 states and 4394 transitions. [2020-09-25 13:26:30,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4394 transitions. [2020-09-25 13:26:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 13:26:30,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:30,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:30,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 13:26:30,048 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:30,048 INFO L82 PathProgramCache]: Analyzing trace with hash -99230353, now seen corresponding path program 1 times [2020-09-25 13:26:30,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:30,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195946522] [2020-09-25 13:26:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:30,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:30,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:30,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:30,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 13:26:30,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:26:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 13:26:30,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:30,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 13:26:30,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:26:30,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:30,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:30,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:30,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:30,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:30,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:30,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:26:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:30,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195946522] [2020-09-25 13:26:30,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:30,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:30,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417689120] [2020-09-25 13:26:30,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:30,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:30,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:30,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:30,875 INFO L87 Difference]: Start difference. First operand 3545 states and 4394 transitions. Second operand 3 states. [2020-09-25 13:26:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:31,153 INFO L93 Difference]: Finished difference Result 6966 states and 8680 transitions. [2020-09-25 13:26:31,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:31,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-09-25 13:26:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:31,165 INFO L225 Difference]: With dead ends: 6966 [2020-09-25 13:26:31,166 INFO L226 Difference]: Without dead ends: 3773 [2020-09-25 13:26:31,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2020-09-25 13:26:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3678. [2020-09-25 13:26:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3678 states. [2020-09-25 13:26:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 4530 transitions. [2020-09-25 13:26:31,291 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 4530 transitions. Word has length 199 [2020-09-25 13:26:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:31,292 INFO L479 AbstractCegarLoop]: Abstraction has 3678 states and 4530 transitions. [2020-09-25 13:26:31,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:31,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 4530 transitions. [2020-09-25 13:26:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 13:26:31,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:31,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:31,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 13:26:31,307 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:31,308 INFO L82 PathProgramCache]: Analyzing trace with hash -912264382, now seen corresponding path program 1 times [2020-09-25 13:26:31,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:31,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814507219] [2020-09-25 13:26:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:31,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 13:26:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 13:26:31,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:31,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 13:26:31,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:26:31,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:31,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:31,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:31,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:31,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814507219] [2020-09-25 13:26:31,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:31,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:31,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134080922] [2020-09-25 13:26:31,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:31,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:31,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:31,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:31,538 INFO L87 Difference]: Start difference. First operand 3678 states and 4530 transitions. Second operand 3 states. [2020-09-25 13:26:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:31,708 INFO L93 Difference]: Finished difference Result 8780 states and 10907 transitions. [2020-09-25 13:26:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:31,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-09-25 13:26:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:31,720 INFO L225 Difference]: With dead ends: 8780 [2020-09-25 13:26:31,721 INFO L226 Difference]: Without dead ends: 5454 [2020-09-25 13:26:31,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:31,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5454 states. [2020-09-25 13:26:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5454 to 5452. [2020-09-25 13:26:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5452 states. [2020-09-25 13:26:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 6706 transitions. [2020-09-25 13:26:31,863 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 6706 transitions. Word has length 200 [2020-09-25 13:26:31,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:31,864 INFO L479 AbstractCegarLoop]: Abstraction has 5452 states and 6706 transitions. [2020-09-25 13:26:31,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:31,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 6706 transitions. [2020-09-25 13:26:31,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 13:26:31,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:31,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:31,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 13:26:31,870 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:31,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:31,871 INFO L82 PathProgramCache]: Analyzing trace with hash -690870181, now seen corresponding path program 1 times [2020-09-25 13:26:31,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:31,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999504652] [2020-09-25 13:26:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:26:31,910 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:26:31,911 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:26:31,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 13:26:31,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:26:31 BoogieIcfgContainer [2020-09-25 13:26:31,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:26:31,968 INFO L168 Benchmark]: Toolchain (without parser) took 30898.78 ms. Allocated memory was 140.0 MB in the beginning and 645.4 MB in the end (delta: 505.4 MB). Free memory was 103.0 MB in the beginning and 188.8 MB in the end (delta: -85.8 MB). Peak memory consumption was 419.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:31,970 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-25 13:26:31,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.97 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 177.7 MB in the end (delta: -75.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:31,973 INFO L168 Benchmark]: Boogie Preprocessor took 64.42 ms. Allocated memory is still 202.9 MB. Free memory was 177.7 MB in the beginning and 174.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:31,973 INFO L168 Benchmark]: RCFGBuilder took 1071.15 ms. Allocated memory is still 202.9 MB. Free memory was 174.7 MB in the beginning and 103.3 MB in the end (delta: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:31,974 INFO L168 Benchmark]: TraceAbstraction took 29130.99 ms. Allocated memory was 202.9 MB in the beginning and 645.4 MB in the end (delta: 442.5 MB). Free memory was 103.3 MB in the beginning and 188.8 MB in the end (delta: -85.5 MB). Peak memory consumption was 357.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:31,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 620.97 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 177.7 MB in the end (delta: -75.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.42 ms. Allocated memory is still 202.9 MB. Free memory was 177.7 MB in the beginning and 174.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1071.15 ms. Allocated memory is still 202.9 MB. Free memory was 174.7 MB in the beginning and 103.3 MB in the end (delta: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29130.99 ms. Allocated memory was 202.9 MB in the beginning and 645.4 MB in the end (delta: 442.5 MB). Free memory was 103.3 MB in the beginning and 188.8 MB in the end (delta: -85.5 MB). Peak memory consumption was 357.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 640]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L645] int s ; [L646] int tmp ; [L650] s = 8464 [L651] CALL ssl3_accept(s) [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__s3__tmp__reuse_message = 0 [L73] s__state = initial_state [L74] blastFlag = 0 [L75] tmp = __VERIFIER_nondet_int() [L76] Time = tmp [L77] cb = 0 [L78] ret = -1 [L79] skip = 0 [L80] got_new_session = 0 [L81] COND FALSE !(s__info_callback != 0) [L84] COND FALSE !(s__ctx__info_callback != 0) [L88] s__in_handshake ++ [L89] COND TRUE tmp___1 + 12288 [L90] COND TRUE tmp___2 + 16384 [L94] COND FALSE !(s__cert == 0) [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND TRUE s__state == 8464 [L271] s__shutdown = 0 [L272] ret = __VERIFIER_nondet_int() [L273] COND TRUE blastFlag == 0 [L274] blastFlag = 1 [L276] COND FALSE !(ret <= 0) [L279] got_new_session = 1 [L280] s__state = 8496 [L281] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND FALSE !(state == 8496) [L614] COND FALSE !(\read(s__debug)) [L620] COND FALSE !(cb != 0) [L629] skip = 0 [L98] COND TRUE 1 [L100] state = s__state [L101] COND FALSE !(s__state == 12292) [L104] COND FALSE !(s__state == 16384) [L107] COND FALSE !(s__state == 8192) [L110] COND FALSE !(s__state == 24576) [L113] COND FALSE !(s__state == 8195) [L116] COND FALSE !(s__state == 8480) [L119] COND FALSE !(s__state == 8481) [L122] COND FALSE !(s__state == 8482) [L125] COND FALSE !(s__state == 8464) [L128] COND FALSE !(s__state == 8465) [L131] COND FALSE !(s__state == 8466) [L134] COND TRUE s__state == 8496 [L285] ret = __VERIFIER_nondet_int() [L286] COND TRUE blastFlag == 1 [L287] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L292] COND FALSE !(\read(s__hit)) [L295] s__state = 8512 [L297] s__init_num = 0 [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE tmp___1 != -12288 [L605] COND TRUE s__state != 8656 [L606] COND TRUE tmp___2 != -16384 [L607] COND TRUE state == 8496 [L640] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 426 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.0s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9734 SDtfs, 7914 SDslu, 10737 SDs, 0 SdLazy, 2060 SolverSat, 265 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5452occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 2947 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 20.8s InterpolantComputationTime, 3934 NumberOfCodeBlocks, 3934 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 3713 ConstructedInterpolants, 0 QuantifiedInterpolants, 1082747 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 207/207 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...